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Question 1
Correct
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A child presents with signs of a hormonal abnormality due to an abnormality of the G protein. What is the most likely diagnosis?
Your Answer: McCune-Albright syndrome
Explanation:McCune-Albright syndrome, characterised by polyostotic fibrous dysplasia, cafe au lait spots, sexual precocity, and hyperfunction of multiple endocrine glands, is the result of G-protein abnormality.
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This question is part of the following fields:
- Endocrinology
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Question 2
Incorrect
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A 12 year old female presents at her local emergency room with a complete loss of consciousness, intercostal retractions, no residual signs and no post-ictal phase. She later went on to have a full recovery. From the list of options, choose the most probable diagnosis.
Your Answer: Atonic seizure
Correct Answer: Partial generalized seizure
Explanation:The symptoms of a partial generalized seizure are consistent with this patient.
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This question is part of the following fields:
- Neurology
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Question 3
Correct
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A 6 month old baby can squeeze an object against his palm, can vocalize and can sit with support. But he cannot hold objects between his index finger and the thumb. He cannot sit without support and he doesn't have stranger fear. Which of the following is correct regarding his development?
Your Answer: Normal development
Explanation:Children are able to use a palmar grasp by the age of 6 months and use a pincer grasp by the age of 9 to 10 months. They can sit with support by 6 months and sit without support by 7 to 9 months. They can vocalize by 3 months. Stranger fear appears from 7 to 10 months. So this baby’s development is normal.
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This question is part of the following fields:
- Child Development
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Question 4
Correct
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A 17-year-old Jewish girl presents with primary amenorrhoea. On examination, she looks a little hirsute and has evidence of facial acne. She is within her predicted adult height and has normal breast and external genitalia development, however, there is excess hair over her lower abdomen and around her nipple area.Investigations were as follows:Hb 13.1 g/dlWCC 8.6 x109/lPLT 201 x109/lNa+ 139 mmol/lK+ 4.5 mmol/lCreatinine 110 µmol/l17-OH progesterone 1.4 times the upper limit of normalPelvic ultrasound: bilateral ovaries and uterus visualised.Which of the following is the most likely diagnosis?
Your Answer: Non-classical congenital adrenal hyperplasia
Explanation:Mild deficiencies of 21-hydroxylase or 3-beta-hydroxysteroid dehydrogenase activity may present in adolescence or adulthood with oligomenorrhea, hirsutism, and/or infertility. This is termed nonclassical adrenal hyperplasia.Late-onset or nonclassical congenital adrenal hyperplasia (NCAH) due to 21-hydroxylase deficiency is one of the most common autosomal recessive disorders. Reported prevalence ranges from 1 in 30 to 1 in 1000. Affected individuals typically present due to signs and symptoms of androgen excess. Treatment needs to be directed toward the symptoms. Goals of treatment include normal linear growth velocity, a normal rate of skeletal maturation, ‘on-time’ puberty, regular menstrual cycles, prevention of or limited progression of hirsutism and acne, and fertility. Treatment needs to be individualized and should not be initiated merely to decrease abnormally elevated hormone concentrations.Normal Ultrasound rules out Turner’s syndrome.
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This question is part of the following fields:
- Endocrinology
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Question 5
Correct
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An 8-month-old infant is presented to the paediatrics ward with a history of delayed developmental milestones since birth. On examination, he has poor muscle tone and balance, and a head circumference, which is greater than normal. Imaging of the patient's head revealed a diminished cerebellar vermis, a large fourth ventricle, and an enlarged posterior fossa. What is the most likely diagnosis?
Your Answer: Dandy-Walker syndrome
Explanation:Dandy-Walker syndrome is characterised by symptoms of brain maldevelopment that are seen in this patient. A large cranium indicates hydrocephalus, and the hypotonia indicates poor limb development.
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This question is part of the following fields:
- Neurology
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Question 6
Correct
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An 8 year old child complains of pain in his ear. His overall health is normal and clinical examination reveals no discharge, hearing loss or fever. Just by looking at it, the pinna of the ear looks swollen and red. Also, pushing the tragus leads to pain. Otoscopy reveals an erythematous external auditory canal and an otherwise healthy tympanic membrane. The bony external canal courses through which bone?
Your Answer: Temporal bone
Explanation:The external auditory canal (EAC) extends from the auricle to the tympanic membrane. Its lateral portion is fibrocartilaginous and its medial portion is bony. Its bony portion is formed by the tympanic portion of the temporal bone.
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This question is part of the following fields:
- ENT
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Question 7
Incorrect
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A 15-year-old girl was brought to the hospital by her mother with complaints of an acute onset of oliguria and gross haematuria. On examination, she was found to have pedal oedema and a blood pressure of 164/112 mmHg. Given the likely diagnosis, what would be the most characteristic finding on urine microscopy?
Your Answer:
Correct Answer: Red blood cell casts
Explanation:Among the options provided, the most characteristic finding that can be expected in his patient’s urine microscopy is RBC casts. Red cell casts are a characteristic feature of acute nephrotic syndrome. Other options:- Hyaline casts may be seen in normal urine, particularly after exercise. – Coarse granular casts occur in glomerular and tubular disease. – Tubular cell casts may be seen in patients with acute tubular necrosis. – The presence of 10 or more white blood cells/mm3 is abnormal and indicates an inflammatory reaction, most commonly due to infection.
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This question is part of the following fields:
- Nephro-urology
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Question 8
Incorrect
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Which of the following is not associated with hirsutism?
Your Answer:
Correct Answer: Delayed puberty
Explanation:Hirsutism is the growth of excess hair in androgen dependent areas or in a male pattern. The phenomenon is found in conditions where there is abnormal androgen action. This can occur in adrenal lesions including congenital adrenal hyperplasia, and Cushing syndrome, or a failure to produce adequate female hormones such as PCOS and premature menopause. Similarly, drugs such as anabolic steroids, danazol and minoxidil can also cause hirsutism. Delayed puberty is unlikely to cause hirsutism.
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This question is part of the following fields:
- Dermatology
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Question 9
Incorrect
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A 13 year old girl presented with signs of shortness of breath, chest pain, non-productive cough, oedema of the lower extremities and cyanosis of the fingertips. She has a history of a ventricular septal defect not surgically corrected. The most probable cause of these symptoms is:
Your Answer:
Correct Answer: Shunt reversal
Explanation:A ventricular septal defect (VSD) is a common form of congenital heart defects and is characterised by the presence of a hole in the wall that separates the right from the left ventricle. Medium or large defects can cause many complications. One of these complication is Eisenmenger syndrome, characterised by reversal of the shunt (from left-to-right shunt into a right-to-left) ,cyanosis and pulmonary hypertension.
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This question is part of the following fields:
- Cardiovascular
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Question 10
Incorrect
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A 16 year old girl fractured a bone in her left foot. Upon examination the clinician discovered that the fracture affected the insertion of the peroneus brevis muscle. Which of the following bones was most likely affected?
Your Answer:
Correct Answer: Base of the fifth metatarsal
Explanation:The peroneus brevis muscle originates from the lower two-thirds of the lateral body of the fibula and has inserts at the base of the fifth metatarsal. Fractures to this bone are common and can be due to infection, trauma, overuse and repetitive use.
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This question is part of the following fields:
- Anatomy
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Question 11
Incorrect
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A 8 year old child presents with fresh rectal bleeding. Which of the following statements is true?
Your Answer:
Correct Answer: Intestinal hamartomatous polyps are seen in Cowden syndrome
Explanation:Colonic Polyposis and neoplasia are often seen in Cowden Syndrome which is a hamartomatous polyposis syndrome. Patients with Cowden syndrome have an increased risk for colorectal cancer.
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This question is part of the following fields:
- Gastroenterology And Hepatology
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Question 12
Incorrect
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A 13-month-old infant is admitted to the hospital and scheduled for an elective cardiac surgery. There is no respiratory distress, but cyanosis is present with oxygen saturations at 80s. There is a midline sternotomy scar. On auscultation there is a 4/6 ejection systolic murmur on the upper left sternal edge and a sternal heave is felt on palpation. Which of the following is the child most likely suffering from and what is the likely treatment?
Your Answer:
Correct Answer: Ventricular septal defect with pulmonary artery band
Explanation:The murmur and thrill indicate a right outflow tract murmur, coupled with the right ventricular heave suggests right ventricular hypertrophy. The VSD would not have been amenable to surgery due to the child’s size/weight and so instead would have been palliated with a PA band. As the child grows, this band progressively restricts pulmonary blood flow until the left to right shunt has reversed. Then it is time for the band to be removed and the VSD to be closed.Pulmonary atresia is a cyanotic condition, which may be palliated with an arterial duct stent. This answer is incorrect as the stent placement would not require a midline sternotomy and would give a continuous machinery type murmur. Pulmonary stenosis with PDA ligation is incorrect. The murmur, thrill, and heave all match a pulmonary stenosis but in the absence of an additional shunt lesion the child would not be cyanosed.
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This question is part of the following fields:
- Cardiovascular
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Question 13
Incorrect
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Sensorineural deafness is strongly associated with which one of the following?
Your Answer:
Correct Answer: Rubella
Explanation:Primary rubella infection during pregnancy, particularly during the first trimester, can affect several organs and cause birth defects that are responsible for congenital rubella syndrome (CRS). The most common defects of CRS are hearing impairment (unilateral or bilateral sensorineural), eye defects (e.g., cataracts, congenital glaucoma, or pigmentary retinopathy), and cardiac defects (e.g., patent ductus arteriosus or peripheral pulmonic stenosis). Congenital hearing loss is the most common sequela, occurring in approximately 60% of cases, especially when infection occurs in the 4th month of pregnancy.
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This question is part of the following fields:
- Infectious Diseases
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Question 14
Incorrect
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What is the first sign of puberty in girls?
Your Answer:
Correct Answer: Breast development
Explanation:The average age for girls to begin puberty is 11.The first sign of puberty in girls is usually that their breasts begin to develop.It’s normal for breast buds to sometimes be very tender or for one breast to start to develop several months before the other one.Pubic hair also starts to grow, and some girls may notice more hair on their legs and arms.After a year or so of puberty beginning, and for the next couple of years:girls’ breasts continue to grow and become fuller.Around 2 years after beginning puberty, girls usually have their first period,pubic hair becomes coarser and curlierunderarm hair begins to grow. From the time their periods start, girls grow 5 to 7.5cm (2 to 3 inches) annually over the next year or two, then reach their adult height.After about 4 years of puberty in girls:breasts become adult-likepubic hair has spread to the inner thighgenitals should now be fully developedgirls stop growing taller.
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This question is part of the following fields:
- Endocrinology
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Question 15
Incorrect
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A 16 year old boy presented, complaining that an insect had lodged in his left ear. Which of the following can be considered as the most appropriate method to remove the insect?
Your Answer:
Correct Answer: Syringe the ear with warm water
Explanation:Removal of foreign bodies from the ear is indicated whenever a well-visualized foreign body is identified in the external auditory canal. Insects are better extracted with suction than with forceps or hooks. From the given answers, irrigation with warm water is the most suitable answer.
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This question is part of the following fields:
- ENT
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Question 16
Incorrect
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A 10-year-old girl presented with a sore throat for the past three days. She was taking ibuprofen and paracetamol over the counter for the pain. She was started on phenoxymethylpenicillin V following a diagnosis of tonsillitis.The next day she presents with a painful rash and feels unwell. On examination, she has extensive papular and plaque lesions. On palpation the papules desquamate. What is this sign called?
Your Answer:
Correct Answer: Nikolskys sign
Explanation:The sign being elicited in this patient is Nikolsky’s sign. Based on the findings, the patient is suffering from toxic epidermal necrolysis.Nikolskys sign: Rubbing the skin causes exfoliation of the outer layer and usually blistering within a few minutes. Other options:- Cullen’s sign: Periumbilical bruising due to intra-abdominal haemorrhage. If the discolouration is seen in the flanks, it is called Cullen’s sign. Underlying pathology includes ruptured ectopic pregnancy and haemorrhagic pancreatitis. – Forscheimer’s sign: It is a fleeting exanthem that is seen as small, red spots (petechiae) on the soft palate. Associated with rubella and glandular fever. Gorlin’s sign: It is the ability to touch the tip of the nose with the tongue. Increased incidence in children with connective tissue disorder, e.g. Ehler Danlos syndrome. – Auspitzs sign: These are small bleeding points are left behind when psoriatic scales are lifted off. It is not a very sensitive or specific sign. Other cutaneous signs include:- Hair collar sign: It is a collar of hypertrichosis around an area of cranial dysraphism.- Hertoghe’s sign (Queen Anne’s sign): It is the loss of lateral one-third of eye-brows. It is associated with numerous conditions, including lupus, HIV, and hypothyroidism. – Dariers sign: It is the swelling, itching and erythema that occurs after stroking skin lesions of a patient with systemic mastocytosis or urticarial pigmentosa. – Dermatographism: Rubbing the skin causes a raised, urticarial lesion. – Koebners phenomenon: It is the appearance of new skin lesions in areas of trauma.- Breakfast, lunch, and dinner sign: Linear pathway of a group of three to five papules caused by the common bed bug, Cimex lectularius. – Buttonhole sign: In type 1 neurofibromatosis, neurofibromas can be invaginated with the finger back into the subcutis. The nodule will reappear after the release of pressure. The sign is also positive for dermatofibromas. – Crowe’s sign: Axillary freckling seen in type I neurofibromatosis.
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This question is part of the following fields:
- Dermatology
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Question 17
Incorrect
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A 4-year-old boy is brought to your clinic by a worried mother who complains that he's still unable to walk. On observing the child on the ground in a supine position, you notice the following events:First, the child rolled into prone, extended his arms and legs far apart. With the trunk weight resting on the extended arms, he pushed the body backward to shift the weight of the trunk over the extended legs.Realizing what you just observed, which among the following is the most important test you would recommend?
Your Answer:
Correct Answer: Creatinine kinase
Explanation:The most important test recommended among the given options is the measurement of creatine kinase levels.The child presents with a gross motor developmental delay, and multiple investigations can be undertaken to confirm the diagnosis. However, the clinching point in the given clinical scenario is the presence of a positive Gower’s sign.Gower’s sign is an excellent screening test for muscle weakness, which is typically observed as an early clinical feature of Duchenne muscular dystrophy (DMD).Creatinine kinase measurement is an easy and rapid test to aid in the diagnosis. Early diagnosis has significant implications not only for the child but for the family, particularly for genetic counselling. DMD is an X-linked recessive disorder, with an abnormal gene at the X chromosome at the Xp21 locus. It is a progressive degenerative muscular condition where muscle fibres are replaced by fat and fibrosis (i.e., become dystrophic).
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This question is part of the following fields:
- Neurology And Neurodisability
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Question 18
Incorrect
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A 13-year-old male presented in the OPD with bilateral ankle oedema. On examination, his BP was normal. Urinalysis showed a high degree of proteinuria was present. Which of the following is the most probable diagnosis in this patient?
Your Answer:
Correct Answer: Minimal change GN
Explanation:Minimal change disease is a type of glomerulonephritis that mostly affects younger children. Proteinuria is present which leads to body oedema. But in these patients blood pressure is normal.
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This question is part of the following fields:
- Renal
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Question 19
Incorrect
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A 6 year old child underwent an emergency splenectomy following trauma. After full recovery he is dismissed from the hospital and returns home. On re-examination, eight weeks later, the GP performs a full blood count with a film. What would you expect to see?
Your Answer:
Correct Answer: Howell-Jolly bodies
Explanation:Howell-Jolly bodies are often seen in post-splenectomy cases, together with Pappenheimer bodies, target cells and irregular contracted red blood cells. The loss of splenic tissue results in the inability to readily remove immature or abnormal red blood cells from the circulation.
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This question is part of the following fields:
- Haematology And Oncology
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Question 20
Incorrect
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A 16-year-old boy is brought to the ER by his friends. He fell off his quad bike while riding it at a high speed. He complains of neck pain and paraesthesia in his limbs. On examination, there are multiple bleeding contusions on the body. There is a handlebar bruise on his chest. And oxygen saturations are low, but heart rate is normal. Which of the following is the most likely causing his shock?
Your Answer:
Correct Answer: Neurogenic
Explanation:Neurogenic shock is a devastating consequence of spinal cord injury (SCI), also known as vasogenic shock. Injury to the spinal cord results in sudden loss of sympathetic tone, which leads to the autonomic instability that is manifested in hypotension, bradyarrhythmia, and temperature dysregulation. Spinal cord injury is not to be confused with spinal shock, which is a reversible reduction in sensory and motor function following spinal cord injury. Neurogenic shock is associated with cervical and high thoracic spine injury. Early identification and aggressive management are vital in neurogenic shock to prevent secondary spinal injury.
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This question is part of the following fields:
- Emergency Medicine
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Question 21
Incorrect
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A 16-year-old female presents with a two day history of right iliac fossa pain, nausea and loss of appetite. You suspect that she has acute appendicitis. Which scoring system could you use to lend support to your diagnosis?
Your Answer:
Correct Answer: Alvarado score
Explanation:The prompt is suggestive of acute appendicitis. The Alvarado score is a clinical scoring system used to determine the likelihood of appendicitis, so this is the correct answer. A score greater than 6 is generally considered at risk for having acute appendicitis. It has 8 different criteria included (symptoms, signs, and lab results) and divides patients into appendicitis unlikely, possible, probable, and definite. The Center Score is a score to access the likelihood that pharyngitis is due to Strep. The Child-Pugh score predicts prognosis in liver cirrhosis. The Glasgow score is two different scores– the Glasgow coma score in trauma, which estimates level of consciousness, essentially, and The Glasgow Imrie Criteria which determines the severity of acute pancreatitis based on 8 lab values. The MELD score predicts the severity of end-stage liver disease.
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This question is part of the following fields:
- Gastroenterology And Hepatology
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Question 22
Incorrect
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A 17-year-old female, who works at a day-care centre presents to the physician with vomiting, joint pains, diarrhoea and crampy abdominal pain. Physical examination reveals a purpuric rash on her legs and over the belt area. She has microscopic haematuria, proteinuria and RBC casts on urine testing. Which of the underlying diagnoses is most likely in this case?
Your Answer:
Correct Answer: Henoch-Schonlein purpura (HSP)
Explanation:Henoch-Schonlein purpura (HSP), also known as IgA vasculitis, is a disease of the skin, mucous membranes, and sometimes other organs that most commonly affects children. In the skin, the disease causes palpable purpura (small, raised areas of bleeding underneath the skin), often with joint pain and abdominal pain. It is an acute immunoglobulin A (IgA)-mediated disorder. The tetrad of purpura, arthritis, kidney inflammation, and abdominal pain is often observed.
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This question is part of the following fields:
- Nephro-urology
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Question 23
Incorrect
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A neonate is diagnosed with cryptorchidism of the right side (undescended testis). Which is the LEAST likely place to find the testis?
Your Answer:
Correct Answer: Perineum
Explanation:Embryologically the testes are retroperitoneal structures in the posterior abdominal wall, attached to the anterolateral abdominal wall by the gubernaculum. The gubernaculum ‘pulls’ the testes through the deep inguinal ring, inguinal canal and superficial inguinal ring and over the pelvic brim. The gubernaculum is preceded by the processus vaginalis that is derived from the peritoneum anterior to the testes. The processus vaginalis pushes the muscle and fascial layers. These eventually make up the canal and the spermatic cord, into the scrotum. The gubernaculum persists as the scrotal ligament while part of the processus vaginalis remains as a bursa-like sac i.e. the tunica vaginalis testes. The testes therefore could be caught in any one of these places along its path of descending. The testes are never in the perineum.
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This question is part of the following fields:
- Genitourinary
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Question 24
Incorrect
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A female presents to obstetric triage at 24 weeks with cramping pain and is threatening preterm labour. The parents would like to know the statistics relating to survival and outcome if their baby is born at this gestation. Which particular study would be useful to review before this consultation?
Your Answer:
Correct Answer: EPICURE
Explanation:EPICure is a series of studies of survival and later health among babies and young people who were born at extremely low gestations -from 22 to 26 weeks.Boost II is a double-blind randomised controlled trial (RCT) comparing the effects of targeting arterial oxygen saturations between 85% and 89% versus 91% and 95% in preterm infants.OSCAR Xe is not the name of a study. Baby-OSCAR is an RCT to determine whether a confirmed large patent ductus arteriosus in very premature babies should be treated with ibuprofen within 72 hours of birth.SafeBoosC is a trial to examine if it is possible to stabilise the cerebral oxygenation of extremely preterm infants in the first 72 hours of life with the use of NIRS oximetry and a clinical treatment guideline. TOBY Xe is an RCT looking at the neuroprotective effects of hypothermia combined with inhaled xenon following perinatal asphyxia.
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This question is part of the following fields:
- Neonatology
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Question 25
Incorrect
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A 14 year old known asthmatic presents to the A&E department with difficulty breathing. She was seen by her regular doctor the day before with a sore throat which he diagnosed as tonsillitis and was prescribed oral Amoxicillin for 5 days. Past medical history:Ulcerative colitis diagnosed four years ago.Current medications:Inhaled salbutamol and beclomethasoneMesalazine 400 mg TDSShe was observed to be alert and oriented but she had laboured breathing. Inspiratory wheeze was noted. She was pale, sweaty and cyanosed. Her temperature was 36.7C, pulse 121/minute and blood pressure 91/40 mmHg. The lungs were clear and the remainder of the examination was normal. She was given high-flow oxygen through a face mask but despite this her breathing became increasingly difficult.What is the most likely causative agent?
Your Answer:
Correct Answer: Haemophilus influenzae
Explanation:Acute epiglottitis is a life-threatening disorder with serious implications to the anaesthesiologist because of the potential for laryngospasm and irrevocable loss of the airway. There is inflammatory oedema of the arytenoids, aryepiglottic folds and the epiglottis; therefore, supraglottitis may be used instead or preferred to the term acute epiglottitis.Acute epiglottitis can occur at any age. The responsible organism used to be Hemophilus influenzae type B (Hib), but infection with group A b-haemolytic Streptococci has become more frequent after the widespread use of Hemophilus influenzae vaccination. The typical presentation in epiglottitis includes acute occurrence of high fever, severe sore throat and difficulty in swallowing with the sitting up and leaning forward position in order to enhance airflow. There is usually drooling because of difficulty and pain on swallowing. Acute epiglottitis usually leads to generalized toxaemia. The most common differential diagnosis is croup and a foreign body in the airway. A late referral to an acute care setting with its serious consequences may result from difficulty in differentiation between acute epiglottitis and less urgent causes of a sore throat, shortness of breath and dysphagia.
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This question is part of the following fields:
- Respiratory
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Question 26
Incorrect
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A 3 month old infant born to an HIV positive mother presented with jaundice, epileptic seizures and microcephaly. What is the most likely cause?
Your Answer:
Correct Answer: Cytomegalovirus
Explanation:Congenital cytomegalovirus infection causes; jaundice, hepatosplenomegaly, petechia, microcephaly, hearing loss and seizures.
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This question is part of the following fields:
- Infectious Diseases
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Question 27
Incorrect
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A 17-year-old girl presents to the clinic complaining of dry skin and amenorrhoea for the past 9 months. She goes to college and is performs well academically. Physical examination shows an underweight girl (weight 38 kg), height 1.78 m (5 ft 10 inches). Excessive small hair can be seen growing on the body. Labs are significant for an elevated cortisol level, normal T4 level, and anaemia associated with reduced WBCs and platelets. Based on this clinical picture, what is the most likely cause of her symptoms?
Your Answer:
Correct Answer: Anorexia nervosa
Explanation:Anorexia nervosa is an eating disorder defined by restriction of energy intake relative to requirements, leading to a significantly low body weight. Patients will have an intense fear of gaining weight and distorted body image with the inability to recognize the seriousness of their significantly low body weight. Athletes in sports such as ballet, long-distance running, and martial arts are pressured to maintain lean body weights to outperform the competition.
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This question is part of the following fields:
- Endocrinology
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Question 28
Incorrect
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A 11-year-old is referred to neurology due to episodes her GP feels are epileptiform. Her mother reports that she appears to just 'stop', sometimes even in mid conversation, for several seconds at random times during the day. During these episodes, she can be unresponsive to questioning and has no recollection of them.Which of these drugs is contraindicated in this condition?
Your Answer:
Correct Answer: Carbamazepine
Explanation:The patient’s history points to absence seizures. Carbamazepine has been shown to aggravate generalized seizure types, especially absence seizures, because it acts directly on the ventrobasal complex of the thalamus which is critical to the neurophysiology of absence seizures.
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This question is part of the following fields:
- Neurology
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Question 29
Incorrect
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A new-born child is not moving his left arm properly. He had shoulder dystocia during childbirth. His arm is hanging down with the shoulder internally rotated, elbow extended, forearm pronated and wrist flexed. What is the most likely diagnosis?
Your Answer:
Correct Answer: Erb palsy
Explanation:Erb’s palsy is a paralysis of the arm caused by injury to the brachial plexus, specifically the severing of the upper trunk C5-C6 nerves.The infant with an upper plexus palsy (C5-C7) keeps the arm adducted and internally rotated, with the elbow extended, the forearm pronated, the wrist flexed, and the hand in a fist. In the first hours of life, the hand also may appear flaccid, but strength returns over days to months.The right side is injured in 51% of cases. Left side occurs in 45% of patients and bilateral injuries, in 4%.
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This question is part of the following fields:
- Neonatology
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Question 30
Incorrect
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Normal male puberty is characterized by which of the following features?
Your Answer:
Correct Answer: Thinning and reddening of scrotal skin is typical of Tanner stage 2
Explanation:Puberty is a period of transitioning into adulthood by developing full reproductive potential by undergoing drastic physiological and psychological changes. For boys, it occurs around 9-16 years of age typically. The process of pubertal changes is usually divided into stages called tanner’s stages. The physiologic changes of puberty are initiated by the release of gonadotropin-releasing hormones from the hypothalamus, which then interact with numerous endogenous and environmental stimuli to bring about the physical pubertal features. Tanner stage 2 in boys is characterized by the thinning and reddening of the scrotal skin.The growth spurt of around 9cm per year is expected in boys, at the peak velocity.Testicular enlargement of >3cm commences puberty.Pubarche, in the absence of other secondary sexual characteristics, is pathological.Adrenarche is the increase in the secretion of adrenal androgens, occurring prior to increased gonadotropin release.
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This question is part of the following fields:
- Endocrinology
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