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Question 1
Correct
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What hand abnormalities are typical in children with achondroplasia?
Your Answer: Trident hand
Explanation:Achondroplasia
Achondroplasia is a genetic disorder that results in disproportionate short stature. This condition is characterized by an enlarged head and short arms and legs when compared to the trunk length. Individuals with achondroplasia typically reach an adult height of about 4 feet, which is significantly shorter than the average height for adults. In addition to short stature, people with achondroplasia may have other physical features, such as short hands with stubby fingers and a trident hand, which is a separation between the middle and ring fingers.
In summary, achondroplasia is a genetic disorder that affects bone growth and development, resulting in disproportionate short stature and other physical features. While there is no cure for achondroplasia, early intervention and management can help individuals with this condition lead healthy and fulfilling lives.
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This question is part of the following fields:
- Paediatrics
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Question 2
Correct
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You are working as a Foundation Year 2 in a GP surgery. A mother brings her 4-year-old girl to see you with a cough. You notice an alert on her notes that states she is on a child protection plan.
Which of the following is true regarding a child protection plan?Your Answer: They are devised for children at risk of significant harm
Explanation:Understanding Child Protection Plans and Child in Need Plans
Child protection plans and child in need plans are two different interventions designed to support children who may be at risk of harm or in need of extra support. It is important to understand the differences between these plans and how they are implemented.
Child protection plans are devised for children who are at risk of significant harm. The aim of these plans is to ensure the child’s safety, promote their health and development, and support the family in safeguarding and promoting the child’s welfare. Child protection plans are not voluntary and involve a team of professionals working together to ensure the child’s safety.
On the other hand, child in need plans are voluntary and are designed to support children who may need extra help with their health, safety, or development. These plans identify a lead professional and outline the resources and services needed to achieve the planned outcomes within a specific timeframe.
It is important to note that both plans involve consultation with parents, wider family members, and relevant agencies. Additionally, child protection plans are regularly reviewed to ensure that the child’s safety and well-being are being maintained.
In summary, child protection plans and child in need plans are interventions designed to support children in different ways. Understanding the differences between these plans can help ensure that children receive the appropriate support and interventions they need to thrive.
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This question is part of the following fields:
- Paediatrics
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Question 3
Incorrect
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A 33-year-old mother, gravida 4, arrives in labor without any prenatal care. During delivery, the infant is born with the intestines protruding from the abdomen, but there is a peritoneal covering safeguarding it. What is the best approach to managing the protruding bowel?
Your Answer: Cover in cling-film and surgically correct within first 5 days of life
Correct Answer: Staged closure starting immediately with completion at 6-12 months
Explanation:Exomphalos and gastroschisis are two types of abdominal wall defects. Exomphalos, also known as omphalocele, is usually detected before birth, but some cases may go unnoticed. On the other hand, gastroschisis requires urgent correction as it involves abdominal contents being outside the body without a peritoneal covering. To protect the bowel, cling-film is used until the surgery can be performed. After the operation, the child may require TPN for a few weeks as the intestinal function normalizes.
When it comes to repairing omphalocele, a gradual approach is often preferred, especially for larger defects. This is because returning the abdominal contents too quickly can cause respiratory complications or an inability to close the abdomen, which can be fatal. Therefore, a staged repair allows the pulmonary system to adapt to the increased abdominal contents over a period of 6-12 months. Unlike gastroschisis, there is no need for cling-film covering in omphalocele as the peritoneum already protects the bowel.
Gastroschisis and exomphalos are both types of congenital visceral malformations. Gastroschisis refers to a defect in the anterior abdominal wall located just beside the umbilical cord. In contrast, exomphalos, also known as omphalocoele, involves the protrusion of abdominal contents through the anterior abdominal wall, which are covered by an amniotic sac formed by amniotic membrane and peritoneum.
When it comes to managing gastroschisis, vaginal delivery may be attempted, but newborns should be taken to the operating theatre as soon as possible after delivery, ideally within four hours. As for exomphalos, a caesarean section is recommended to reduce the risk of sac rupture. In cases where primary closure is difficult due to lack of space or high intra-abdominal pressure, a staged repair may be undertaken. This involves allowing the sac to granulate and epithelialise over several weeks or months, forming a shell. As the infant grows, the sac contents will eventually fit within the abdominal cavity, at which point the shell can be removed and the abdomen closed.
Overall, both gastroschisis and exomphalos require careful management to ensure the best possible outcome for the newborn. By understanding the differences between these two conditions and the appropriate steps to take, healthcare professionals can provide effective care and support to both the infant and their family.
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This question is part of the following fields:
- Paediatrics
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Question 4
Correct
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At what age do children usually outgrow these episodes?
A 2-year-old toddler is brought in by ambulance after experiencing a seizure-like episode witnessed by their parent. The parent recorded the episode on their phone, which lasted for 30 seconds, and showed it to the pediatric team. The child has no previous history of seizures and no known medical conditions. The parent reports that the child has had a cough and runny nose for the past 4 days and has been restless at night, requiring acetaminophen for a fever of 39.2ºC. In the emergency department, the child is irritable and coughing but does not have any further seizures. The pediatric team reassures the parent that this episode is not a cause for concern and advises them that the child should eventually outgrow them.Your Answer: 5 years old
Explanation:Febrile convulsions are commonly observed in children aged between 6 months to 5 years. The symptoms include a flushed and hot appearance followed by loss of consciousness. Febrile convulsions are usually characterized by tonic-clonic seizure-like episodes and a postictal period. Parents should be informed that most children experience only one episode. However, in children over 1-year-old who have had their first febrile convulsion, there is a 33% chance of recurrence, which is higher in children under 1. Although most children experience their first febrile convulsion by the age of 3, it can continue up to 5 years, especially in those who have had previous episodes. Children over 5 years old are less likely to experience febrile convulsions. If a child aged 7, 9, or 11 years experiences convulsions, they should be referred for neurological testing as it may indicate epilepsy.
Febrile convulsions are seizures caused by fever in children aged 6 months to 5 years. They typically last less than 5 minutes and are most commonly tonic-clonic. There are three types: simple, complex, and febrile status epilepticus. Children who have had a first seizure or any features of a complex seizure should be admitted to pediatrics. Regular antipyretics do not reduce the chance of a febrile seizure occurring. The overall risk of further febrile convulsion is 1 in 3, with risk factors including age of onset, fever duration, family history, and link to epilepsy. Children without risk factors have a 2.5% risk of developing epilepsy, while those with all three features have a much higher risk.
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This question is part of the following fields:
- Paediatrics
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Question 5
Correct
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A 3-day-old baby has not passed meconium yet. Your consultant suspects Hirschsprung's disease and asks for your initial management plan. What would be the best initial treatment for this child until a definite diagnosis is made and more specific treatment can be given?
Your Answer: Bowel Irrigation
Explanation:The first step in managing Hirschsprung’s disease is to perform rectal washouts or bowel irrigation. While waiting for a full thickness rectal biopsy to confirm the diagnosis, this treatment can help the baby pass meconium. Once the diagnosis is confirmed, the definitive management is an anorectal pull through procedure. It is important to note that anorectal pull through is not the initial treatment but rather the final solution. Lactulose is not appropriate for constipation in children with Hirschsprung’s disease. Rectal biopsy is only used for diagnostic purposes.
Understanding Hirschsprung’s Disease
Hirschsprung’s disease is a rare condition that affects 1 in 5,000 births. It is caused by a developmental failure of the parasympathetic Auerbach and Meissner plexuses, resulting in an aganglionic segment of bowel. This leads to uncoordinated peristalsis and functional obstruction, which can present as constipation and abdominal distension in older children or failure to pass meconium in the neonatal period.
Hirschsprung’s disease is three times more common in males and is associated with Down’s syndrome. Diagnosis is made through a rectal biopsy, which is considered the gold standard. Treatment involves initial rectal washouts or bowel irrigation, followed by surgery to remove the affected segment of the colon.
In summary, Hirschsprung’s disease is a rare condition that can cause significant gastrointestinal symptoms. It is important to consider this condition as a differential diagnosis in childhood constipation, especially in male patients or those with Down’s syndrome. Early diagnosis and treatment can improve outcomes and prevent complications.
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This question is part of the following fields:
- Paediatrics
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Question 6
Incorrect
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A 5-year-old boy with an otherwise unremarkable medical history develops an ulcer in his ileum. What is the most likely congenital birth defect that caused his condition?
Your Answer: Tracheo-oesophageal fistula
Correct Answer: Meckel’s diverticulum
Explanation:Common Congenital Abnormalities of the Digestive System
The digestive system can be affected by various congenital abnormalities that can cause significant health problems. Here are some of the most common congenital abnormalities of the digestive system:
Meckel’s Diverticulum: This condition is caused by the persistence of the vitelline duct and is found in the small intestine. It can contain ectopic gastric mucosa and can cause painless rectal bleeding, signs of obstruction, or acute appendicitis-like symptoms. Treatment involves excision of the diverticulum and its adjacent ileal segment.
Pyloric Stenosis: This congenital condition is associated with hypertrophy of the pyloric muscle and presents with projectile, non-bilious vomiting at around 4-8 weeks of age.
Tracheo-Oesophageal Fistula: This condition is associated with a communication between the oesophagus and the trachea and is often associated with oesophageal atresia. Infants affected struggle to feed and may develop respiratory distress due to aspiration of feed into the lungs.
Gastroschisis: This is a ventral abdominal wall defect where part of the bowel, and sometimes the stomach and liver, herniate through the defect outside the body. It is corrected surgically by returning the herniating organs to the abdominal cavity and correcting the defect.
Omphalocele: This is an abdominal wall defect in the midline where the gut fails to return through the umbilicus to the abdominal cavity during embryonic development. The protruded organs are covered by a membrane, and correction is surgical by returning the herniating organs into the abdominal cavity and correcting the umbilical defect.
In conclusion, these congenital abnormalities of the digestive system require prompt diagnosis and treatment to prevent complications and improve outcomes.
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This question is part of the following fields:
- Paediatrics
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Question 7
Incorrect
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An 18-year-old girl visits her GP with worries about not having started her menstrual cycle yet. Apart from that, she feels healthy. During the examination, she appears to be of average height and has developed breasts, but has minimal pubic hair growth. The doctor can feel two lumps in her groin area upon examination of her abdomen. Her external genitalia seem normal. What is the probable diagnosis?
Your Answer: Congenital adrenal hyperplasia
Correct Answer: Androgen insensitivity syndrome
Explanation:The patient’s presentation is consistent with androgen insensitivity, which is a genetic condition where individuals with XY chromosomes have female physical characteristics due to a lack of testosterone receptors in their tissues. This disorder is X-linked and often results in undescended testes. Congenital adrenal hyperplasia is unlikely as it typically causes early puberty and virilization, while Kallmann syndrome does not explain the presence of groin masses. Polycystic ovarian syndrome usually results in secondary amenorrhea or oligomenorrhea and is accompanied by other symptoms such as acne and hirsutism. Turner’s syndrome, which causes primary amenorrhea, is characterized by short stature, webbed neck, heart defects, and abnormal breast development, and does not involve undescended testes.
Disorders of sex hormones can have various effects on the body, as shown in the table below. Primary hypogonadism, also known as Klinefelter’s syndrome, is characterized by high levels of LH and low levels of testosterone. Patients with this disorder often have small, firm testes, lack secondary sexual characteristics, and are infertile. They may also experience gynaecomastia and have an increased risk of breast cancer. Diagnosis is made through chromosomal analysis.
Hypogonadotrophic hypogonadism, or Kallmann syndrome, is another cause of delayed puberty. It is typically inherited as an X-linked recessive trait and is caused by the failure of GnRH-secreting neurons to migrate to the hypothalamus. Patients with Kallmann syndrome may have hypogonadism, cryptorchidism, and anosmia. Sex hormone levels are low, and LH and FSH levels are inappropriately low or normal. Cleft lip/palate and visual/hearing defects may also be present.
Androgen insensitivity syndrome is an X-linked recessive condition that causes end-organ resistance to testosterone, resulting in genotypically male children (46XY) having a female phenotype. Complete androgen insensitivity syndrome is the new term for testicular feminisation syndrome. Patients with this disorder may experience primary amenorrhoea, undescended testes causing groin swellings, and breast development due to the conversion of testosterone to oestradiol. Diagnosis is made through a buccal smear or chromosomal analysis to reveal a 46XY genotype. Management includes counseling to raise the child as female, bilateral orchidectomy due to an increased risk of testicular cancer from undescended testes, and oestrogen therapy.
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This question is part of the following fields:
- Paediatrics
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Question 8
Correct
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A 6-year-old boy arrives at the Emergency Department with a high fever, difficulty breathing, severe sore throat, and drooling of saliva. What is the best course of action for management?
Your Answer: Call the ear, nose and throat (ENT) surgeon/senior anaesthetist to secure her airway
Explanation:Managing Acute Epiglottitis: Prioritizing Airway Security
Acute epiglottitis is a medical emergency that requires immediate attention to secure the patient’s airway. While medical therapies and investigations are important, the priority should be given to securing the airway via endo-/nasotracheal intubation or tracheostomy guided by a senior anaesthetist and ENT surgeon. Oral instrumentation is contraindicated until the airway has been secured. Lateral neck X-ray may be useful in diagnosing less acute presentations, but in this case, the child requires intravenous broad-spectrum antibiotics and admission to an Intensive Therapy Unit/High-dependency Unit bed in the hospital. Intubating a child with acute epiglottitis can be challenging and should only be undertaken by an experienced anaesthetist.
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This question is part of the following fields:
- Paediatrics
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Question 9
Correct
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A three-year-old child is admitted to the hospital with a high fever of 39ºC that has persisted for the past five days. The parents are worried as they have noticed redness in the child's eyes, swelling in the neck, and a new rash.
During the examination, the child is found to have a widespread maculopapular rash and bilateral conjunctivitis. Additionally, there is unilateral cervical lymphadenopathy, cracked and erythematosus lips, and a strawberry tongue.
What is the initial treatment that should be given to this three-year-old child?Your Answer: Aspirin
Explanation:Kawasaki disease is a systemic vasculitis that typically affects children under the age of 5. Symptoms include a fever lasting over 5 days, bilateral non-purulent conjunctivitis, a rash, mucosal erythema with a strawberry tongue, and unilateral cervical lymphadenopathy. In some cases, swelling of the hands and feet can occur, followed by desquamation in the second week. If left untreated, up to one-quarter of patients can develop coronary aneurysms. The main goal of treatment is to reduce the risk of cardiac complications. In the UK, the standard treatment is intravenous immunoglobulin and high dose aspirin, despite the fact that aspirin is usually contraindicated in children. Benzylpenicillin is not indicated in the treatment of Kawasaki disease. Conservative management is also not appropriate, as specific treatment is required to reduce inflammation and prevent the risk of coronary complications. Corticosteroids may be used as a second-line treatment if the patient does not respond to intravenous immunoglobulins.
Understanding Kawasaki Disease
Kawasaki disease is a rare type of vasculitis that primarily affects children. It is important to identify this disease early on as it can lead to serious complications, such as coronary artery aneurysms. The disease is characterized by a high-grade fever that lasts for more than five days and is resistant to antipyretics. Other symptoms include conjunctival injection, bright red, cracked lips, strawberry tongue, cervical lymphadenopathy, and red palms and soles that later peel.
Diagnosis of Kawasaki disease is based on clinical presentation as there is no specific diagnostic test available. Management of the disease involves high-dose aspirin, which is one of the few indications for aspirin use in children. Intravenous immunoglobulin is also used as a treatment option. Echocardiogram is the initial screening test for coronary artery aneurysms, rather than angiography.
Complications of Kawasaki disease can be serious, with coronary artery aneurysm being the most common. It is important to recognize the symptoms of Kawasaki disease early on and seek medical attention promptly to prevent potential complications.
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This question is part of the following fields:
- Paediatrics
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Question 10
Correct
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What is the initial indication of puberty in males?
Your Answer: Increase in testicular volume
Explanation:Puberty: Normal Changes in Males and Females
Puberty is a natural process that marks the transition from childhood to adulthood. In males, the first sign of puberty is testicular growth, which typically occurs around the age of 12. A testicular volume greater than 4 ml indicates the onset of puberty. The maximum height spurt for males occurs at the age of 14.
For females, the first sign of puberty is breast development, which typically occurs around the age of 11.5. The height spurt for females reaches its maximum early in puberty, at the age of 12, before menarche. Menarche, the onset of menstruation, typically occurs at the age of 13.
Following menarche, there is only a small increase of about 4% in height. It is important to note that normal changes in puberty may include gynaecomastia in boys, asymmetrical breast growth in girls, and diffuse enlargement of the thyroid gland. These changes are a natural part of the process and should not cause alarm. Understanding the normal changes that occur during puberty can help individuals navigate this important stage of development with confidence.
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This question is part of the following fields:
- Paediatrics
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Question 11
Correct
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A 4-year-old boy is brought to the paediatric assessment unit by his parents after they witnessed him having a seizure. He had been experiencing a fever and cold symptoms for the past three days. His father also noticed a rash on his chest and a swollen tongue yesterday. The boy has met all of his developmental milestones prior to this incident.
After being assessed, the medical team has determined that the boy is safe to go home. What advice should the parents be given?Your Answer: An ambulance must be called if another seizure occurs and persists for longer than five minutes
Explanation:Parents should be informed that if a febrile convulsion lasts longer than five minutes, they should call an ambulance. The presence of a sandpaper rash and strawberry tongue in the vignette suggests a diagnosis of scarlet fever, which is often associated with febrile seizures. However, it is important to note that simple febrile seizures lasting only a few minutes are generally not a cause for concern. It is not recommended to prescribe prophylactic antipyretics as they have not been shown to reduce seizure frequency according to NICE guidelines. Referral to a paediatric neurologist is only necessary if the child has neurodevelopmental delay or signs of a neurocutaneous syndrome or metabolic disorder.
Febrile convulsions are seizures caused by fever in children aged 6 months to 5 years. They typically last less than 5 minutes and are most commonly tonic-clonic. There are three types: simple, complex, and febrile status epilepticus. Children who have had a first seizure or any features of a complex seizure should be admitted to pediatrics. Regular antipyretics do not reduce the chance of a febrile seizure occurring. The overall risk of further febrile convulsion is 1 in 3, with risk factors including age of onset, fever duration, family history, and link to epilepsy. Children without risk factors have a 2.5% risk of developing epilepsy, while those with all three features have a much higher risk.
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This question is part of the following fields:
- Paediatrics
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Question 12
Correct
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A 36-month-old girl is brought to the paediatric clinic. She is an orphaned refugee who recently arrived in the United Kingdom and has no medical history.
Her foster parents have brought her to the clinic as they have noticed that she becomes easily breathless on exertion or after a bath and squats down to catch her breath. During these times, they notice that her lips turn blue.
Upon examination, you find that she is on the 10th centile for height and weight, her lips are slightly dusky, she has good air entry bilaterally in her chest, and she has a normal heart rate at rest with a loud ejection systolic murmur at the upper left sternal edge with an associated thrill.
A chest x-ray reveals decreased vascular markings and a normal-sized heart. Electrocardiography (ECG) shows sinus rhythm with right axis deviation and deep S waves in V5 and V6.
What is the most likely diagnosis?Your Answer: Tetralogy of Fallot
Explanation:Tetralogy of Fallot (TOF) is a common cyanotic congenital heart condition characterized by four abnormalities. Symptoms are determined by the degree of shunting of deoxygenated blood from right to left, which is influenced by the degree of right ventricular outflow tract obstruction (RVOTO) and other ways blood can get to the lungs. Squatting can relieve cyanotic episodes by increasing peripheral vascular resistance. The child in question has a loud ejection systolic murmur at the upper left sternal edge in keeping with the turbulent flow of blood across the stenosed RVOT. Isolated pulmonary stenosis is a possible differential diagnosis, but the history of squatting is highly suggestive of TOF.
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This question is part of the following fields:
- Paediatrics
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Question 13
Incorrect
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A 14-month-old boy is referred to paediatrics by his GP due to concerns that he is still not attempting to 'pull to stand'. He was born at 28 weeks by emergency cesarean section due to foetal distress and weighed 1.2kg at birth.
On examination, he appears healthy and engaged. He responds to his name and has 8 meaningful words. He can drink from a cup using both hands. When put on the floor, he commando crawls to move around. Upper limb tone is normal however lower limb tone is significantly increased.
Based on this patient's symptoms, where in the brain/nervous system has damage occurred?Your Answer: Upper motor neurons in the cerebellum
Correct Answer: Upper motor neurons in the periventricular white matter
Explanation:Damage to upper motor neurons is the cause of spastic cerebral palsy.
Understanding Cerebral Palsy
Cerebral palsy is a condition that affects movement and posture due to damage to the motor pathways in the developing brain. It is the most common cause of major motor impairment and affects 2 in 1,000 live births. The causes of cerebral palsy can be antenatal, intrapartum, or postnatal. Antenatal causes include cerebral malformation and congenital infections such as rubella, toxoplasmosis, and CMV. Intrapartum causes include birth asphyxia or trauma, while postnatal causes include intraventricular hemorrhage, meningitis, and head trauma.
Children with cerebral palsy may exhibit abnormal tone in early infancy, delayed motor milestones, abnormal gait, and feeding difficulties. They may also have associated non-motor problems such as learning difficulties, epilepsy, squints, and hearing impairment. Cerebral palsy can be classified into spastic, dyskinetic, ataxic, or mixed types.
Managing cerebral palsy requires a multidisciplinary approach. Treatments for spasticity include oral diazepam, oral and intrathecal baclofen, botulinum toxin type A, orthopedic surgery, and selective dorsal rhizotomy. Anticonvulsants and analgesia may also be required. Understanding cerebral palsy and its management is crucial in providing appropriate care and support for individuals with this condition.
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This question is part of the following fields:
- Paediatrics
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Question 14
Correct
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A 14-year-old girl presents to the emergency department with symptoms of a cold. She has been experiencing a fever, runny nose, headache, and a dry cough for a few days. Despite taking paracetamol and ibuprofen, her temperature has not gone down, which worries her mother. The patient is alert, comfortable, and well-hydrated. During the examination, her temperature is 38.9ºC, heart rate is 110 bpm, blood pressure is 90/70 mmHg, and respiratory rate is 26 breaths per minute. Her chest is clear, throat is slightly red, and there are no signs of tonsillitis. Otoscopy shows no abnormalities, and her ears are non-tender. There are no rashes, photophobia, or neck stiffness. What is the appropriate management for this patient?
Your Answer: Initiate sepsis six protocol
Explanation:Children over the age of 12 have vital signs similar to adults. However, if a child presents with symptoms of sepsis, such as a high temperature, elevated heart rate, low blood pressure, and increased respiratory rate, it is important to initiate the sepsis six protocol and conduct further investigations to determine the source of infection. In such cases, it is not appropriate to send the child home or administer additional doses of antipyretics. Aspirin should not be given to children due to the risk of Reye’s syndrome. Broad-spectrum IV antibiotics should be administered if there is a suspected bacterial infection causing sepsis.
Age-appropriate Vital Signs for Children
Paediatric vital signs vary depending on the age of the child. The table below provides age-appropriate ranges for heart rate and respiratory rate. For children under one year old, a heart rate of 110-160 beats per minute and a respiratory rate of 30-40 breaths per minute is considered normal. For children between the ages of one and two, a heart rate of 100-150 beats per minute and a respiratory rate of 25-35 breaths per minute is normal. Children between the ages of two and five should have a heart rate of 90-140 beats per minute and a respiratory rate of 25-30 breaths per minute. For children between the ages of five and twelve, a heart rate of 80-120 beats per minute and a respiratory rate of 20-25 breaths per minute is normal. Finally, for children over the age of twelve, a heart rate of 60-100 beats per minute and a respiratory rate of 15-20 breaths per minute is considered normal. It is important for healthcare professionals to be aware of these age-appropriate vital sign ranges in order to properly assess the health of children.
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This question is part of the following fields:
- Paediatrics
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Question 15
Correct
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A five-year-old boy has been brought to the clinic by his worried mother due to an unusual walking pattern and lower limb weakness. After conducting a thorough medical history, physical examination, and further tests, the child is diagnosed with Duchenne muscular dystrophy. What is the prevailing cardiac pathology linked to this disorder?
Your Answer: Dilated cardiomyopathy
Explanation:Dilated cardiomyopathy is the most common heart condition linked to Duchenne muscular dystrophy, while acute myocardial infarctions, atrioventricular septal defects, and coronary aneurysms are not associated with this condition. Atrioventricular septal defects are, however, associated with Down syndrome, while coronary aneurysms are a complication of Kawasaki disease. Dilated cardiomyopathy is a rapidly progressive complication that typically starts in adolescence for individuals with Duchenne muscular dystrophy, an X-linked recessive condition characterized by progressive muscle wasting and weakness.
Understanding Duchenne Muscular Dystrophy
Duchenne muscular dystrophy is a genetic disorder that is inherited in an X-linked recessive manner. It affects the dystrophin genes that are essential for normal muscular function. The disorder is characterized by progressive proximal muscle weakness that typically begins around the age of 5 years. Other features include calf pseudohypertrophy and Gower’s sign, which is when a child uses their arms to stand up from a squatted position. Approximately 30% of patients with Duchenne muscular dystrophy also have intellectual impairment.
To diagnose Duchenne muscular dystrophy, doctors typically look for elevated levels of creatinine kinase in the blood. However, genetic testing has now replaced muscle biopsy as the preferred method for obtaining a definitive diagnosis. Unfortunately, there is currently no effective treatment for Duchenne muscular dystrophy, so management is largely supportive.
The prognosis for Duchenne muscular dystrophy is poor. Most children with the disorder are unable to walk by the age of 12 years, and patients typically survive to around the age of 25-30 years. Duchenne muscular dystrophy is also associated with dilated cardiomyopathy, which can further complicate the management of the disorder.
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This question is part of the following fields:
- Paediatrics
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Question 16
Incorrect
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A 32-year-old woman gives birth to a 37-week gestational age male neonate. Within 6 hours after delivery, the neonate shows signs of excessive respiratory efforts and tachypnoea. There is grunting and intercostal retraction. A chest X-ray reveals bilateral pulmonary oedema with a ground-glass appearance. What antenatal examination findings are most likely to have been observed in the mother?
Your Answer: Serum total calcium of 1.75 mmol/l
Correct Answer: Fasting blood sugar of 14.0 mmol/l
Explanation:The neonate in question has a fasting blood sugar level of 14.0 mmol/l and is suffering from neonatal respiratory distress syndrome (NRDS). This is a common condition in premature infants, and those born to diabetic mothers are at an increased risk due to delayed lung maturation. An elevated total thyroxine concentration is a normal response to pregnancy and is not related to NRDS. Maternal hypocalcaemia also has no relation to NRDS. A positive indirect Coombs’ test indicates a risk of Rh isoimmunisation in the fetus, which can lead to complications such as erythroblastosis fetalis and jaundice, but is not directly related to NRDS. Elevated titres of anti-nuclear and anti-SSA antibodies are associated with maternal systemic lupus erythematosus and fetal conduction heart block, but again, this is not directly related to NRDS unless it leads to preterm birth. Overall, prematurity and maternal diabetes are the major risk factors for NRDS.
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This question is part of the following fields:
- Paediatrics
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Question 17
Correct
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A 2-day-old baby has her heel prick test done, and it comes back that she has a raised level of immunoreactive trypsinogen (IRT).
What is the most suitable subsequent test for this infant?Your Answer: Sweat test
Explanation:At day 5 of life, newborns undergo a heel prick test to check for various metabolic diseases including cystic fibrosis (CF), sickle cell disease, and congenital hypothyroidism. A positive result for CF is indicated by elevated levels of immunoreactive trypsinogen (IRT) and requires a sweat test to confirm the diagnosis. If the sweat test is also positive, the baby is diagnosed with CF.
Diagnosis of Cystic Fibrosis through Sweat Test
Cystic fibrosis (CF) is a genetic disorder that affects the respiratory, digestive, and reproductive systems. One of the most reliable ways to diagnose CF is through a sweat test. This test measures the amount of chloride in a patient’s sweat, which is abnormally high in those with CF. A normal value is less than 40 mEq/l, while a value greater than 60 mEq/l indicates CF.
However, there are some causes of false positive results, such as malnutrition, adrenal insufficiency, glycogen storage diseases, nephrogenic diabetes insipidus, hypothyroidism, hypoparathyroidism, G6PD, and ectodermal dysplasia. On the other hand, false negative results can occur due to skin edema, which is often caused by hypoalbuminemia or hypoproteinemia resulting from pancreatic exocrine insufficiency.
In conclusion, the sweat test is a reliable method for diagnosing CF, but it is important to consider the potential causes of false positive and false negative results. Proper interpretation of the test results can help ensure accurate diagnosis and appropriate treatment for patients with CF.
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This question is part of the following fields:
- Paediatrics
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Question 18
Correct
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A 10-week-old baby is admitted to the Paediatric Ward by her General Practitioner (GP). She was born at term via normal vaginal delivery after an uncomplicated pregnancy. Her birthweight was 2900 g. Her 20-week anomaly scan was unremarkable. Her parents inform you that a heart murmur was noted at her 8-week check, for which she is awaiting routine outpatient assessment. Her parents report that, over the last week, she has had episodes of going blue during feeds and friends have remarked that she looks ‘off colour’. She had a similar episode while with her GP, and oxygen saturation was recorded at 88% peripherally. As a result, the GP called 999 and transferred her to hospital. She is growing along the 25th centile. On examination, she is alert with normal vital signs. Heart sounds reveal a loud systolic murmur at the lower left sternal edge; she had palpable femoral pulses bilaterally and very slight cyanosis. Her chest is clear, without recession or signs of distress. Her liver is not enlarged.
What is the most likely diagnosis?Your Answer: Tetralogy of Fallot
Explanation:Tetralogy of Fallot is a common congenital heart disease that affects around 3-6 out of every 10,000 births. It is characterized by four heart abnormalities that can cause symptoms such as cyanosis, difficulty with feeding, failure to thrive, and Tet spells. Diagnosis is typically made through echocardiography, and surgical correction is usually performed within the first two years of life.
Cyanotic heart disease can be divided into two groups: those that present in the first week of life and those that present after the first week. Examples of conditions that present in the first week include total pulmonary atresia, tricuspid atresia, and transposition of the great arteries. Examples of conditions that can present after the first week include tetralogy of Fallot, total anomalous pulmonary venous drainage, and tricuspid regurgitation with right-to-left shunt via atrial septal defect.
Transposition of the great arteries is a cyanotic congenital heart condition where the aorta arises from the right ventricle and the pulmonary arteries from the left ventricle. It typically presents with central cyanosis within the first day or two of life and is managed with intravenous prostaglandin E1 and balloon atrial septostomy.
Total pulmonary atresia is a congenital heart abnormality where the pulmonary valve fails to develop, resulting in disrupted blood flow from the right ventricle to the pulmonary trunk. It can occur with or without a ventricular septal defect and is associated with tetralogy of Fallot.
Ventricular septal defect is a congenital heart defect located in the interventricular septum that allows mixing of blood between the two sides of the heart. Symptoms depend on the size of the defect and can range from asymptomatic to signs of heart failure.
Patent ductus arteriosus is the failure of closure of the fetal connection between the descending aorta and pulmonary artery. It is not a cyanotic congenital heart defect and can be treated with intravenous indomethacin, cardiac catheterization, or ligation. Symptoms may include decreased exercise tolerance, pulmonary congestion, a cardiac murmur, or heart failure.
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This question is part of the following fields:
- Paediatrics
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Question 19
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A 7-year-old girl has been brought to the GP with a 2-day history of fever, malaise, and sore throat. She also has some facial redness that started yesterday evening. On examination, there is flushing of the cheeks and a fine, blanching, erythematosus rash that feels like sandpaper on the anterior aspect of the neck. There is erythema of the tonsils and tongue, without exudate. The GP also notices some erythematosus, non-tender lines in the creases of the elbows. The GP decides to prescribe a 10-day course of antibiotics.
What advice should the mother be given regarding her child's return to school?Your Answer: They can return to school 24 hours after taking the first dose of antibiotics
Explanation:If a child has scarlet fever, they can go back to school after 24 hours of taking antibiotics. The symptoms of tonsillopharyngitis (red tonsils and a tongue that looks like a strawberry) and maculopapular exanthem (a rash that feels like sandpaper and lines on the elbows) suggest that the child has scarlet fever. The GP does not need to see the child again because antibiotics should help them recover. However, the child should not go back to school right away because they may still be contagious. The antibiotics will last for 10 days, but the child only needs to wait for 1 day before returning to school. Alternatively, after 7 days, the child will no longer be contagious and can go back to school as usual.
Scarlet fever is a condition caused by erythrogenic toxins produced by Group A haemolytic streptococci, usually Streptococcus pyogenes. It is more prevalent in children aged 2-6 years, with the highest incidence at 4 years. The disease spreads through respiratory droplets or direct contact with nose and throat discharges, especially during sneezing and coughing. The incubation period is 2-4 days, and symptoms include fever, malaise, headache, nausea/vomiting, sore throat, ‘strawberry’ tongue, and a rash that appears first on the torso and spares the palms and soles. The rash has a rough ‘sandpaper’ texture and desquamination occurs later in the course of the illness, particularly around the fingers and toes.
To diagnose scarlet fever, a throat swab is usually taken, but antibiotic treatment should be initiated immediately, rather than waiting for the results. Management involves administering oral penicillin V for ten days, while patients with a penicillin allergy should be given azithromycin. Children can return to school 24 hours after commencing antibiotics, and scarlet fever is a notifiable disease. Although usually a mild illness, scarlet fever may be complicated by otitis media, rheumatic fever, acute glomerulonephritis, or rare invasive complications such as bacteraemia, meningitis, or necrotizing fasciitis, which may present acutely with life-threatening illness.
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This question is part of the following fields:
- Paediatrics
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Question 20
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A 10-year-old girl is brought to the attention of a psychiatrist by her father with complaints of difficulty concentrating at home and at school. She is reported by the teachers to be easily distracted which is adversely affecting her learning. She also shows repeated outbursts of anger and her father thinks she has 'too much energy'. The psychiatrist diagnoses her with attention-deficit hyperactivity disorder (ADHD) and starts her on methylphenidate (Ritalin).
What parameter must be monitored every 6 months in this patient?Your Answer: Weight and height
Explanation:Regular monitoring of weight and height is recommended every 6 months for patients taking methylphenidate, a stimulant medication. This is important as the drug may cause appetite suppression and growth impairment in children. Additionally, blood pressure and pulse should also be monitored regularly.
In March 2018, NICE released new guidelines for identifying and managing Attention Deficit Hyperactivity Disorder (ADHD). This condition can have a significant impact on a child’s life and can continue into adulthood, making accurate diagnosis and treatment crucial. According to DSM-V, ADHD is characterized by persistent features of inattention and/or hyperactivity/impulsivity, with an element of developmental delay. Children up to the age of 16 must exhibit six of these features, while those aged 17 or over must exhibit five. ADHD has a UK prevalence of 2.4%, with a higher incidence in boys than girls, and there may be a genetic component.
NICE recommends a holistic approach to treating ADHD that is not solely reliant on medication. After presentation, a ten-week observation period should be implemented to determine if symptoms change or resolve. If symptoms persist, referral to secondary care is necessary, typically to a paediatrician with a special interest in behavioural disorders or to the local Child and Adolescent Mental Health Service (CAMHS). A tailored plan of action should be developed, taking into account the patient’s needs and wants, as well as how their condition affects their lives.
Drug therapy should be considered a last resort and is only available to those aged 5 years or older. Parents of children with mild/moderate symptoms can benefit from attending education and training programmes. For those who do not respond or have severe symptoms, pharmacotherapy may be considered. Methylphenidate is the first-line treatment for children and should be given on a six-week trial basis. It is a CNS stimulant that primarily acts as a dopamine/norepinephrine reuptake inhibitor. Side effects include abdominal pain, nausea, and dyspepsia. Weight and height should be monitored every six months in children. If there is an inadequate response, lisdexamfetamine should be considered, followed by dexamfetamine if necessary. In adults, methylphenidate or lisdexamfetamine are the first-line options, with switching between drugs if no benefit is seen after a trial of the other. All of these drugs are potentially cardiotoxic, so a baseline ECG should be performed before starting treatment, and referral to a cardiologist should be made if there is any significant past medical history or family history, or any doubt or ambiguity.
As with most psychiatric conditions, a thorough history and clinical examination are essential, particularly given the overlap of ADHD with many other psychiatric and
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This question is part of the following fields:
- Paediatrics
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Question 21
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A 7-month-old infant is brought to the emergency department with symptoms of vomiting, blood in stools, and irritability. During the physical examination, the baby's abdomen is found to be tense, and he draws his knees up in response to palpation.
What would be the most suitable course of action for this baby?Your Answer: Refer to paediatric surgeons
Explanation:Intussusception in Children: Diagnosis and Treatment
Intussusception is a medical condition that occurs when one part of the intestine slides into another part, causing a blockage. Children with this condition may experience severe abdominal pain, vomiting, and bloody stools. If left untreated, intussusception can lead to bowel perforation, sepsis, and even death. Therefore, it is crucial to diagnose and treat this condition promptly.
When a child presents with symptoms of intussusception, the most appropriate course of action is to refer them immediately to a paediatric surgical unit. There, doctors will attempt to relieve the intussusception through air reduction, which involves pumping air into the intestine to push the telescoped section back into place. If this method fails, surgery may be necessary to correct the blockage.
Several risk factors can increase a child’s likelihood of developing intussusception, including viral infections and intestinal lymphadenopathy. Therefore, parents should seek medical attention if their child experiences any symptoms of this condition. With prompt diagnosis and treatment, most children with intussusception can make a full recovery.
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This question is part of the following fields:
- Paediatrics
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Question 22
Correct
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A 16-year-old girl comes to her family doctor complaining of bilateral knee pain that has been bothering her for the past four weeks. She mentions that she is a member of her school's track and field team but denies any recent injuries or falls. During the physical examination, the doctor notes tenderness in both of her tibial tuberosities. However, her anterior and posterior cruciate ligament stress tests, as well as the Apley's and McMurray's tests, all yield normal results.
What would be the most appropriate next step?Your Answer: Do no further investigations - advise analgesia, reduce physical exertion and consider physiotherapy
Explanation:Osgood-Schlatter Disease: Diagnosis and Treatment
Osgood-Schlatter disease is a common condition that affects teenagers who are very active in sports. It is caused by traction, which results in numerous microscopic avulsion fractures at the tibial tuberosity. The diagnosis is clinical, and treatment is conservative. X-rays and imaging are usually normal. Physiotherapy may help by strengthening the quadriceps muscles. The pain reduces and resolves, as the bones mature and ossification is completed. It is important to avoid unnecessary investigations and refer to secondary care only if there is suspicion of other conditions.
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This question is part of the following fields:
- Paediatrics
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Question 23
Correct
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A 6-year-old boy visits his GP with a productive cough and wheeze. During the examination, a 1/6 intensity systolic murmur is detected in the second intercostal space lateral to the left sternal edge. The murmur is not audible when the child lies flat. What is the most probable diagnosis?
Your Answer: Innocent murmur
Explanation:The innocent murmur is the correct answer. It is characterized by being soft, systolic, short, symptomless, and varying with position when standing or sitting. In contrast, coarctation of the aorta produces an ejection systolic murmur that can be heard through to the back and does not change with position. This condition is also associated with hypertension in the upper extremities and a difference in blood pressure between the arms and legs. Ventricular septal defect presents as a pansystolic murmur, while atrial septal defect is an ejection systolic murmur that is often accompanied by fixed splitting of the 2nd heart sound.
Innocent murmurs are common in children and are usually harmless. There are different types of innocent murmurs, including ejection murmurs, venous hums, and Still’s murmur. Ejection murmurs are caused by turbulent blood flow at the outflow tract of the heart, while venous hums are due to turbulent blood flow in the great veins returning to the heart. Still’s murmur is a low-pitched sound heard at the lower left sternal edge.
An innocent ejection murmur is characterized by a soft-blowing murmur in the pulmonary area or a short buzzing murmur in the aortic area. It may vary with posture and is localized without radiation. There is no diastolic component, no thrill, and no added sounds such as clicks. The child is usually asymptomatic, and there are no other abnormalities.
Overall, innocent murmurs are not a cause for concern and do not require treatment. However, if a child has symptoms such as chest pain, shortness of breath, or fainting, further evaluation may be necessary to rule out any underlying heart conditions.
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This question is part of the following fields:
- Paediatrics
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Question 24
Correct
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A 3-year-old girl with meningococcal septicaemia has a cardiac arrest on the ward. You are the first responder. After confirming the arrest and following the paediatric BLS protocol, what is the appropriate rate for chest compressions?
Your Answer: 100-120 compressions per minute
Explanation:The Paediatric Basic Life Support guideline of the UK Resuscitation Council mandates that chest compressions for children of all ages should be administered at a rate of 100-120 per minute, with a depth that depresses the sternum by at least one-third of the chest’s depth. Individuals without paediatric resuscitation training are advised to use the adult chest compression to rescue breaths ratio of 30:2, while those caring for children and trained to do so should use a ratio of 15:2. It is important to note that the initial danger-response-airway-breathing-circulation sequence must still be followed.
Paediatric Basic Life Support Guidelines
Paediatric basic life support guidelines were updated in 2015 by the Resuscitation Council. Lay rescuers should use a compression:ventilation ratio of 30:2 for children under 1 year and between 1 year and puberty, a child is defined. If there are two or more rescuers, a ratio of 15:2 should be used.
The algorithm for paediatric basic life support starts with checking if the child is unresponsive and shouting for help. The airway should be opened, and breathing should be checked by looking, listening, and feeling for breaths. If the child is not breathing, five rescue breaths should be given, and signs of circulation should be checked.
For infants, the brachial or femoral pulse should be used, while children should use the femoral pulse. Chest compressions should be performed at a ratio of 15:2, with a rate of 100-120 compressions per minute for both infants and children. The depth of compressions should be at least one-third of the anterior-posterior dimension of the chest, which is approximately 4 cm for an infant and 5 cm for a child.
In children, the lower half of the sternum should be compressed, while in infants, a two-thumb encircling technique should be used for chest compressions. These guidelines are crucial for anyone who may need to perform basic life support on a child, and it is essential to follow them carefully to ensure the best possible outcome.
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This question is part of the following fields:
- Paediatrics
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Question 25
Incorrect
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A murmur is incidentally discovered by a GP in a 9-year-old girl. The murmur is described as a 'continuous blowing noise' heard below both clavicles. What type of murmur is most likely to be diagnosed?
Your Answer: Still's murmur
Correct Answer: Venous hum
Explanation:A venous hum is a harmless murmur commonly found in children. It is characterized by a constant blowing sound that can be heard beneath the collarbones. In contrast, a Still’s murmur is also benign but produces a low-pitched noise on the lower left side of the sternum. A pulmonary flow murmur is another harmless murmur, but it is heard on the upper left side of the sternum. The remaining murmurs are considered pathological.
Innocent murmurs are common in children and are usually harmless. There are different types of innocent murmurs, including ejection murmurs, venous hums, and Still’s murmur. Ejection murmurs are caused by turbulent blood flow at the outflow tract of the heart, while venous hums are due to turbulent blood flow in the great veins returning to the heart. Still’s murmur is a low-pitched sound heard at the lower left sternal edge.
An innocent ejection murmur is characterized by a soft-blowing murmur in the pulmonary area or a short buzzing murmur in the aortic area. It may vary with posture and is localized without radiation. There is no diastolic component, no thrill, and no added sounds such as clicks. The child is usually asymptomatic, and there are no other abnormalities.
Overall, innocent murmurs are not a cause for concern and do not require treatment. However, if a child has symptoms such as chest pain, shortness of breath, or fainting, further evaluation may be necessary to rule out any underlying heart conditions.
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This question is part of the following fields:
- Paediatrics
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Question 26
Correct
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A 3-year-old child presents with a large bruise on the thigh after a fall. His mother notes that he has always been prone to bruising. Tests reveal: haemoglobin (Hb) 112g/l, platelets 186 × 109/l, prothrombin time (PT) 10 s, activated partial thromboplastin time (APTT) 70 s and normal bleeding time.
What is the most probable diagnosis?Your Answer: Haemophilia A
Explanation:Common Bleeding Disorders in Children
Haemophilia A, von Willebrand disease, vitamin K deficiency, childhood cirrhosis, and idiopathic thrombocytopenic purpura (ITP) are common bleeding disorders in children.
Haemophilia A is an X-linked recessive inherited bleeding disorder caused by a deficiency in coagulation factor VIII. Patients present with prolonged bleeding after minor trauma, haematoma formation, spontaneous bleeding into joints, soft tissue haemorrhage, and other symptoms. Management involves regular infusions of factor VIII.
Von Willebrand disease is an inherited bleeding disorder caused by deficiency in vWF. It presents with easy bruising, prolonged bleeding following minor trauma, heavy bleeding following an operation, and other symptoms. Treatment is with the administration of desmopressin, recombinant vWF or a combination of vWF and factor VIII.
Vitamin K deficiency can occur at any point during a person’s life, but it is most commonly encountered in infancy. Patients most commonly present with prolonged bleeding following minor trauma. This is corrected by the administration of vitamin K.
Childhood cirrhosis has multiple causes, depending on the age of the patient. In this case, there will be deranged liver function tests, as well as a prolonged PT that is not corrected despite administration of adequate vitamin K. This is an indicator of poor liver synthetic function.
Idiopathic thrombocytopenic purpura (ITP) is a primary condition caused by a low number of platelets. It presents with bleeding, bruises, and petechiae.
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This question is part of the following fields:
- Paediatrics
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Question 27
Correct
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A 6-year-old girl is brought to her general practitioner by her mother because she is shorter than most of her classmates. She gets good grades and does well in school. She is below the fifth percentile for height for her age. On examination, she is short and has a webbed neck and widely spaced nipples.
Which one of the following is karyotyping most likely to reveal?Your Answer: 45,XO
Explanation:Understanding Different Karyotypes and Associated Conditions
Karyotypes are an important tool in diagnosing genetic disorders. Here are some common karyotypes and the associated conditions:
Turner Syndrome (45,XO): This disorder affects females and is caused by the absence of one or part of an X chromosome. Symptoms include short stature, heart defects, and premature ovarian failure.
Klinefelter’s Syndrome (47,XXY): This karyotype is associated with males who have an extra X chromosome. Symptoms include delayed puberty, small testes, and learning disabilities.
Trisomy 21 (47,XX+21): This karyotype is associated with Down syndrome, which causes intellectual disability and physical characteristics such as slanted palpebral fissure and a wide space between the big and second toe.
47,XYY: This karyotype is associated with males who have an extra Y chromosome. Symptoms include tall stature and an increased risk of learning difficulties and behavioral problems.
Normal Karyotype: A normal karyotype for a woman is 46,XX. If a different karyotype is present, it may indicate a genetic disorder.
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This question is part of the following fields:
- Paediatrics
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Question 28
Correct
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You are discussing conception with two parents who both have achondroplasia. They ask you what the chances are that a child of theirs would be of average height. What is the appropriate answer?
Your Answer: 25%
Explanation:Understanding Achondroplasia
Achondroplasia is a genetic disorder that is inherited in an autosomal dominant manner. It is caused by a mutation in the fibroblast growth factor receptor 3 (FGFR-3) gene, which leads to abnormal cartilage development. This results in short stature, with affected individuals having short limbs (rhizomelia) and shortened fingers (brachydactyly). They also have a large head with frontal bossing and a narrow foramen magnum, midface hypoplasia with a flattened nasal bridge, ‘trident’ hands, and lumbar lordosis.
In most cases, achondroplasia occurs as a sporadic mutation, with advancing parental age at the time of conception being a risk factor. There is no specific therapy for achondroplasia, but some individuals may benefit from limb lengthening procedures. These procedures involve the application of Ilizarov frames and targeted bone fractures, with a clearly defined need and endpoint being essential for success.
Overall, understanding achondroplasia is important for individuals and families affected by this condition. While there is no cure, there are treatment options available that can improve quality of life for those living with achondroplasia.
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This question is part of the following fields:
- Paediatrics
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Question 29
Correct
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A child is born at 28 weeks gestation and is transferred to the neonatal unit. After a few hours, the child shows signs of nasal flaring, chest wall indrawing, and appears to have jaundice. The observations show a heart rate of 75/min, a respiratory rate of 68/min, and a temperature of 38.2ºC. What is the most common organism responsible for the probable diagnosis?
Your Answer: Group B streptococcus
Explanation:The leading cause of early-onset neonatal sepsis in the UK is infection by group B streptococcus.
Neonatal Sepsis: Causes, Risk Factors, and Management
Neonatal sepsis is a serious bacterial or viral infection in the blood that affects babies within the first 28 days of life. It is categorized into early-onset (EOS) and late-onset (LOS) sepsis, with each category having distinct causes and common presentations. The most common causes of neonatal sepsis are group B streptococcus (GBS) and Escherichia coli, accounting for approximately two-thirds of cases. Premature and low birth weight babies are at higher risk, as well as those born to mothers with GBS colonization or infection during pregnancy. Symptoms can vary from subtle signs of illness to clear septic shock, and diagnosis is usually established through blood culture. Treatment involves early identification and use of intravenous antibiotics, with duration depending on ongoing investigations and clinical picture. Other important management factors include maintaining adequate oxygenation and fluid and electrolyte status.
Neonatal Sepsis: Causes, Risk Factors, and Management
Neonatal sepsis is a serious infection that affects newborn babies within the first 28 days of life. It can be caused by a variety of bacteria and viruses, with GBS and E. coli being the most common. Premature and low birth weight babies, as well as those born to mothers with GBS colonization or infection during pregnancy, are at higher risk. Symptoms can range from subtle signs of illness to clear septic shock, and diagnosis is usually established through blood culture. Treatment involves early identification and use of intravenous antibiotics, with duration depending on ongoing investigations and clinical picture. Other important management factors include maintaining adequate oxygenation and fluid and electrolyte status.
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This question is part of the following fields:
- Paediatrics
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Question 30
Correct
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A 4-week old infant comes in with excessive vomiting and constipation. The mother reports that the baby has vomited several times, but has been content during feedings. The baby appears visibly dehydrated and a small lump is detected in the abdominal area during examination. What arterial blood gas results would you anticipate?
Your Answer: Elevated bicarbonate, hypochloraemia, hypokalaemia
Explanation:The typical result of pyloric stenosis is the development of alkalosis with low levels of chloride and potassium.
Understanding Pyloric Stenosis
Pyloric stenosis is a condition that usually occurs in infants between the second and fourth weeks of life. However, in rare cases, it may present later, up to four months. This condition is caused by the thickening of the circular muscles of the pylorus. Pyloric stenosis is more common in males, with an incidence of 4 per 1,000 live births. It is also more likely to affect first-borns and infants with a positive family history.
The most common symptom of pyloric stenosis is projectile vomiting, which usually occurs about 30 minutes after a feed. Other symptoms may include constipation, dehydration, and a palpable mass in the upper abdomen. Prolonged vomiting can lead to hypochloraemic, hypokalaemic alkalosis, which can be life-threatening.
Diagnosis of pyloric stenosis is typically made using ultrasound. Management of this condition involves a surgical procedure called Ramstedt pyloromyotomy. This procedure involves making a small incision in the pylorus to relieve the obstruction and allow for normal passage of food. With prompt diagnosis and treatment, infants with pyloric stenosis can make a full recovery.
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This question is part of the following fields:
- Paediatrics
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