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  • Question 1 - A 2 year old child is brought to the emergency department by a...

    Correct

    • A 2 year old child is brought to the emergency department by a worried parent as the child has developed a barking cough. After conducting an examination, you diagnose croup and decide to administer corticosteroids. What is the most suitable dosage?

      Your Answer: Oral dexamethasone at a dose of 0.15mg/kg

      Explanation:

      For patients with croup, the usual dose of oral dexamethasone is 0.15mg/kg. However, if the patient cannot take it orally, an alternative option is to administer intramuscular dexamethasone at a dose of 0.6 mg/kg as a single dose.

      Further Reading:

      Croup, also known as laryngotracheobronchitis, is a respiratory infection that primarily affects infants and toddlers. It is characterized by a barking cough and can cause stridor (a high-pitched sound during breathing) and respiratory distress due to swelling of the larynx and excessive secretions. The majority of cases are caused by parainfluenza viruses 1 and 3. Croup is most common in children between 6 months and 3 years of age and tends to occur more frequently in the autumn.

      The clinical features of croup include a barking cough that is worse at night, preceded by symptoms of an upper respiratory tract infection such as cough, runny nose, and congestion. Stridor, respiratory distress, and fever may also be present. The severity of croup can be graded using the NICE system, which categorizes it as mild, moderate, severe, or impending respiratory failure based on the presence of symptoms such as cough, stridor, sternal/intercostal recession, agitation, lethargy, and decreased level of consciousness. The Westley croup score is another commonly used tool to assess the severity of croup based on the presence of stridor, retractions, air entry, oxygen saturation levels, and level of consciousness.

      In cases of severe croup with significant airway obstruction and impending respiratory failure, symptoms may include a minimal barking cough, harder-to-hear stridor, chest wall recession, fatigue, pallor or cyanosis, decreased level of consciousness, and tachycardia. A respiratory rate over 70 breaths per minute is also indicative of severe respiratory distress.

      Children with moderate or severe croup, as well as those with certain risk factors such as chronic lung disease, congenital heart disease, neuromuscular disorders, immunodeficiency, age under 3 months, inadequate fluid intake, concerns about care at home, or high fever or a toxic appearance, should be admitted to the hospital. The mainstay of treatment for croup is corticosteroids, which are typically given orally. If the child is too unwell to take oral medication, inhaled budesonide or intramuscular dexamethasone may be used as alternatives. Severe cases may require high-flow oxygen and nebulized adrenaline.

      When considering the differential diagnosis for acute stridor and breathing difficulty, non-infective causes such as inhaled foreign bodies

    • This question is part of the following fields:

      • Paediatric Emergencies
      11.3
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  • Question 2 - A 2-year-old toddler is brought into the emergency department by his parents who...

    Correct

    • A 2-year-old toddler is brought into the emergency department by his parents who are worried that he may have croup. What clinical features would you expect to find in a child with croup?

      Your Answer: Barking cough worse at night

      Explanation:

      Croup is identified by a cough that sounds like a seal barking, especially worse during the night. Before the barking cough, there may be initial symptoms of a cough, runny nose, and congestion for 12 to 72 hours. Other signs of croup include a high-pitched sound when breathing (stridor), difficulty breathing (respiratory distress), and fever.

      Further Reading:

      Croup, also known as laryngotracheobronchitis, is a respiratory infection that primarily affects infants and toddlers. It is characterized by a barking cough and can cause stridor (a high-pitched sound during breathing) and respiratory distress due to swelling of the larynx and excessive secretions. The majority of cases are caused by parainfluenza viruses 1 and 3. Croup is most common in children between 6 months and 3 years of age and tends to occur more frequently in the autumn.

      The clinical features of croup include a barking cough that is worse at night, preceded by symptoms of an upper respiratory tract infection such as cough, runny nose, and congestion. Stridor, respiratory distress, and fever may also be present. The severity of croup can be graded using the NICE system, which categorizes it as mild, moderate, severe, or impending respiratory failure based on the presence of symptoms such as cough, stridor, sternal/intercostal recession, agitation, lethargy, and decreased level of consciousness. The Westley croup score is another commonly used tool to assess the severity of croup based on the presence of stridor, retractions, air entry, oxygen saturation levels, and level of consciousness.

      In cases of severe croup with significant airway obstruction and impending respiratory failure, symptoms may include a minimal barking cough, harder-to-hear stridor, chest wall recession, fatigue, pallor or cyanosis, decreased level of consciousness, and tachycardia. A respiratory rate over 70 breaths per minute is also indicative of severe respiratory distress.

      Children with moderate or severe croup, as well as those with certain risk factors such as chronic lung disease, congenital heart disease, neuromuscular disorders, immunodeficiency, age under 3 months, inadequate fluid intake, concerns about care at home, or high fever or a toxic appearance, should be admitted to the hospital. The mainstay of treatment for croup is corticosteroids, which are typically given orally. If the child is too unwell to take oral medication, inhaled budesonide or intramuscular dexamethasone may be used as alternatives. Severe cases may require high-flow oxygen and nebulized adrenaline.

      When considering the differential diagnosis for acute stridor and breathing difficulty, non-infective causes such as inhaled foreign bodies

    • This question is part of the following fields:

      • Paediatric Emergencies
      6.2
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  • Question 3 - A 3 week old female is brought into the emergency department due to...

    Correct

    • A 3 week old female is brought into the emergency department due to repeated episodes of forceful vomiting. After conducting an initial evaluation, you suspect that the patient may have pyloric stenosis. Which of the following metabolic imbalances is most frequently linked to pyloric stenosis?

      Your Answer: Hypochloraemic, hypokalaemic alkalosis

      Explanation:

      Pyloric stenosis, a condition characterized by narrowing of the pylorus (the opening between the stomach and small intestine), often leads to an electrolyte imbalance. This imbalance typically presents as hypochloremia (low chloride levels), hypokalemia (low potassium levels), and metabolic alkalosis (an increase in blood pH). To confirm the diagnosis, it is recommended to perform U&Es (tests to measure electrolyte levels) and a venous blood gas analysis. The electrolyte abnormalities observed in pyloric stenosis are primarily caused by the loss of hydrogen and chloride ions through vomiting. While urine is usually alkaline in this condition, severe dehydration can lead to paradoxical aciduria, where hydrogen ions are preferentially secreted instead of potassium ions to prevent further decrease in potassium levels.

      Further Reading:

      Pyloric stenosis is a condition that primarily affects infants, characterized by the thickening of the muscles in the pylorus, leading to obstruction of the gastric outlet. It typically presents between the 3rd and 12th weeks of life, with recurrent projectile vomiting being the main symptom. The condition is more common in males, with a positive family history and being first-born being additional risk factors. Bottle-fed children and those delivered by c-section are also more likely to develop pyloric stenosis.

      Clinical features of pyloric stenosis include projectile vomiting, usually occurring about 30 minutes after a feed, as well as constipation and dehydration. A palpable mass in the upper abdomen, often described as like an olive, may also be present. The persistent vomiting can lead to electrolyte disturbances, such as hypochloremia, alkalosis, and mild hypokalemia.

      Ultrasound is the preferred diagnostic tool for confirming pyloric stenosis. It can reveal specific criteria, including a pyloric muscle thickness greater than 3 mm, a pylorus longitudinal length greater than 15-17 mm, a pyloric volume greater than 1.5 cm3, and a pyloric transverse diameter greater than 13 mm.

      The definitive treatment for pyloric stenosis is pyloromyotomy, a surgical procedure that involves making an incision in the thickened pyloric muscle to relieve the obstruction. Before surgery, it is important to correct any hypovolemia and electrolyte disturbances with intravenous fluids. Overall, pyloric stenosis is a relatively common condition in infants, but with prompt diagnosis and appropriate management, it can be effectively treated.

    • This question is part of the following fields:

      • Paediatric Emergencies
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  • Question 4 - A 7 year old girl is brought into the emergency department by concerned...

    Correct

    • A 7 year old girl is brought into the emergency department by concerned parents. They inform you that she hasn't been feeling well for the past couple of days, complaining of fatigue, nausea, and excessive thirst. Today, the parents decided to bring her to the ED as she has become extremely lethargic. Upon examination, you notice that the patient appears pale and has cool extremities. The triage observations and tests are as follows:

      Blood pressure: 85/50
      Pulse: 145 bpm
      Respiration rate: 30 bpm
      Oxygen saturations: 94% on air
      Capillary blood glucose: 26 mmol/l

      Which of the following actions should be prioritized?

      Your Answer: Administer 0.9% sodium chloride fluid bolus of 10 ml/kg

      Explanation:

      When children with diabetic ketoacidosis (DKA) show signs of shock such as low blood pressure, fast heart rate, and poor peripheral perfusion, it is important for clinicians to consider DKA as a possible cause. In these cases, the initial treatment should involve giving a fluid bolus of 10 ml/kg to help stabilize the patient.

      Further Reading:

      Diabetic ketoacidosis (DKA) is a serious complication of diabetes that occurs due to a lack of insulin in the body. It is most commonly seen in individuals with type 1 diabetes but can also occur in type 2 diabetes. DKA is characterized by hyperglycemia, acidosis, and ketonaemia.

      The pathophysiology of DKA involves insulin deficiency, which leads to increased glucose production and decreased glucose uptake by cells. This results in hyperglycemia and osmotic diuresis, leading to dehydration. Insulin deficiency also leads to increased lipolysis and the production of ketone bodies, which are acidic. The body attempts to buffer the pH change through metabolic and respiratory compensation, resulting in metabolic acidosis.

      DKA can be precipitated by factors such as infection, physiological stress, non-compliance with insulin therapy, acute medical conditions, and certain medications. The clinical features of DKA include polydipsia, polyuria, signs of dehydration, ketotic breath smell, tachypnea, confusion, headache, nausea, vomiting, lethargy, and abdominal pain.

      The diagnosis of DKA is based on the presence of ketonaemia or ketonuria, blood glucose levels above 11 mmol/L or known diabetes mellitus, and a blood pH below 7.3 or bicarbonate levels below 15 mmol/L. Initial investigations include blood gas analysis, urine dipstick for glucose and ketones, blood glucose measurement, and electrolyte levels.

      Management of DKA involves fluid replacement, electrolyte correction, insulin therapy, and treatment of any underlying cause. Fluid replacement is typically done with isotonic saline, and potassium may need to be added depending on the patient’s levels. Insulin therapy is initiated with an intravenous infusion, and the rate is adjusted based on blood glucose levels. Monitoring of blood glucose, ketones, bicarbonate, and electrolytes is essential, and the insulin infusion is discontinued once ketones are below 0.3 mmol/L, pH is above 7.3, and bicarbonate is above 18 mmol/L.

      Complications of DKA and its treatment include gastric stasis, thromboembolism, electrolyte disturbances, cerebral edema, hypoglycemia, acute respiratory distress syndrome, and acute kidney injury. Prompt medical intervention is crucial in managing DKA to prevent potentially fatal outcomes.

    • This question is part of the following fields:

      • Paediatric Emergencies
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  • Question 5 - A 4 year old girl is brought into the emergency department with a...

    Incorrect

    • A 4 year old girl is brought into the emergency department with a 1 day history of feeling unwell and being tired. She is diagnosed with diabetic ketoacidosis based on her urine dipstick and venous blood sample (results shown below):

      pH 7.15
      bicarbonate 11 mmol/l
      glucose 28 mmol/ll

      The parents inform you that the patient weighs around 20 kg. You determine that the patient is not in shock but needs a fluid bolus due to dehydration. You prescribe a 200 ml bolus to be given over 30 minutes. What is the correct rate for the patient's ongoing intravenous fluid requirements after the bolus?

      Your Answer: 200 ml/hr

      Correct Answer: 79 ml/hr

      Explanation:

      To calculate the overall rate of fluid administration for a patient, we need to consider both the deficit and maintenance requirements. The deficit is determined by the weight of the patient, with a 1kg deficit equaling 1000ml. However, we also need to subtract the 200 ml bolus from the deficit calculation. So, the deficit is 1000 ml – 200 ml = 800 ml.

      The deficit calculation is for the next 48 hours, while maintenance is calculated per day. For maintenance, we use the Holliday-Segar formula based on the patient’s weight. For this patient, the formula is as follows:

      – 100 ml/kg/day for the first 10 kg of body weight = 10 x 100 = 1000 ml
      – 50 ml/kg/day for the next 10 to 20 kg = 50 x 10 = 500 ml
      – 20 ml/kg/day for each additional kilogram above 20 kg = 0 (as the patient only weighs 20kg)

      So, the total maintenance requirement is 1500 ml per day (over 24 hours), which equals 62 ml/hour.

      To determine the overall rate, we add the maintenance requirement (62 ml/hr) to the deficit requirement (17 ml/hr). Therefore, the overall rate of fluid administration for this patient is 79 ml/hr.

      Further Reading:

      Diabetic ketoacidosis (DKA) is a serious complication of diabetes that occurs due to a lack of insulin in the body. It is most commonly seen in individuals with type 1 diabetes but can also occur in type 2 diabetes. DKA is characterized by hyperglycemia, acidosis, and ketonaemia.

      The pathophysiology of DKA involves insulin deficiency, which leads to increased glucose production and decreased glucose uptake by cells. This results in hyperglycemia and osmotic diuresis, leading to dehydration. Insulin deficiency also leads to increased lipolysis and the production of ketone bodies, which are acidic. The body attempts to buffer the pH change through metabolic and respiratory compensation, resulting in metabolic acidosis.

      DKA can be precipitated by factors such as infection, physiological stress, non-compliance with insulin therapy, acute medical conditions, and certain medications. The clinical features of DKA include polydipsia, polyuria, signs of dehydration, ketotic breath smell, tachypnea, confusion, headache, nausea, vomiting, lethargy, and abdominal pain.

      The diagnosis of DKA is based on the presence of ketonaemia or ketonuria, blood glucose levels above 11 mmol/L or known diabetes mellitus, and a blood pH below 7.3 or bicarbonate levels below 15 mmol/L. Initial investigations include blood gas analysis, urine dipstick for glucose and ketones, blood glucose measurement, and electrolyte levels.

      Management of DKA involves fluid replacement, electrolyte correction, insulin therapy, and treatment of any underlying cause. Fluid replacement is typically done with isotonic saline, and potassium may need to be added depending on the patient’s levels. Insulin therapy is initiated with an intravenous infusion, and the rate is adjusted based on blood glucose levels. Monitoring of blood glucose, ketones, bicarbonate, and electrolytes is essential, and the insulin infusion is discontinued once ketones are below 0.3 mmol/L, pH is above 7.3, and bicarbonate is above 18 mmol/L.

      Complications of DKA and its treatment include gastric stasis, thromboembolism, electrolyte disturbances, cerebral edema, hypoglycemia, acute respiratory distress syndrome, and acute kidney injury. Prompt medical intervention is crucial in managing DKA to prevent potentially fatal outcomes.

    • This question is part of the following fields:

      • Paediatric Emergencies
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  • Question 6 - You are present at a pediatric cardiac arrest. The cardiac arrest team has,...

    Correct

    • You are present at a pediatric cardiac arrest. The cardiac arrest team has, unfortunately, been unable to establish IV access, and an intraosseous needle is inserted. The child weighs 20 kg.
      What is the appropriate dose of adrenaline to administer via the IO route in this situation?

      Your Answer: 300 mcg

      Explanation:

      When administering adrenaline to a pediatric patient experiencing cardiac arrest, the dosage given through the intraosseous (IO) route is identical to that given through the intravenous (IV) route. Both routes require a dosage of 10 mcg/kg. For instance, if the child weighs 30 kg, the appropriate dosage would be 300 mcg (0.3 mg).

    • This question is part of the following fields:

      • Paediatric Emergencies
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  • Question 7 - You are requested to evaluate a 6 year old girl. She was playing...

    Correct

    • You are requested to evaluate a 6 year old girl. She was playing in the backyard when she suddenly burst into tears. Her mother suspects she stepped on a bee. Shortly after, her face began to swell and her breathing became rapid and noisy. Your diagnosis is anaphylaxis. What is the appropriate dosage of adrenaline to administer?

      Your Answer: 150 micrograms by IM injection

      Explanation:

      The appropriate dose of adrenaline for treating anaphylaxis in children under 6 years old is 150 micrograms, which is equivalent to 0.15 ml of a 1 in 1,000 solution.

      Further Reading:

      Anaphylaxis is a severe and life-threatening allergic reaction that affects the entire body. It is characterized by a rapid onset and can lead to difficulty breathing, low blood pressure, and loss of consciousness. In paediatrics, anaphylaxis is often caused by food allergies, with nuts being the most common trigger. Other causes include drugs and insect venom, such as from a wasp sting.

      When treating anaphylaxis, time is of the essence and there may not be enough time to look up medication doses. Adrenaline is the most important drug in managing anaphylaxis and should be administered as soon as possible. The recommended doses of adrenaline vary based on the age of the child. For children under 6 months, the dose is 150 micrograms, while for children between 6 months and 6 years, the dose remains the same. For children between 6 and 12 years, the dose is increased to 300 micrograms, and for adults and children over 12 years, the dose is 500 micrograms. Adrenaline can be repeated every 5 minutes if necessary.

      The preferred site for administering adrenaline is the anterolateral aspect of the middle third of the thigh. This ensures quick absorption and effectiveness of the medication. It is important to follow the Resuscitation Council guidelines for anaphylaxis management, as they have recently been updated.

      In some cases, it can be challenging to determine if a patient had a true episode of anaphylaxis. In such cases, serum tryptase levels may be measured, as they remain elevated for up to 12 hours following an acute episode of anaphylaxis. This can help confirm the diagnosis and guide further management.

      Overall, prompt recognition and administration of adrenaline are crucial in managing anaphylaxis in paediatrics. Following the recommended doses and guidelines can help ensure the best outcomes for patients experiencing this severe allergic reaction.

    • This question is part of the following fields:

      • Paediatric Emergencies
      50.6
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  • Question 8 - A 3 week old female is brought into the emergency department by concerned...

    Correct

    • A 3 week old female is brought into the emergency department by concerned parents with intermittent vomiting. They inform you that for the past few days the baby has been projectile vomiting approximately 30 minutes after each feed. The parents are worried because the baby is not wetting her diaper as frequently as usual. Bowel movements are normal in consistency but less frequent. The baby has no fever, rashes, and her vital signs are normal. The parents inquire about the treatment plan for the most likely underlying diagnosis.

      What is the management approach for the most probable underlying condition?

      Your Answer: Advise the parents the child will likely require a pyloromyotomy

      Explanation:

      The most effective treatment for pyloric stenosis is pyloromyotomy, a surgical procedure. Before undergoing surgery, the patient should be rehydrated and any electrolyte imbalances should be corrected.

      Further Reading:

      Pyloric stenosis is a condition that primarily affects infants, characterized by the thickening of the muscles in the pylorus, leading to obstruction of the gastric outlet. It typically presents between the 3rd and 12th weeks of life, with recurrent projectile vomiting being the main symptom. The condition is more common in males, with a positive family history and being first-born being additional risk factors. Bottle-fed children and those delivered by c-section are also more likely to develop pyloric stenosis.

      Clinical features of pyloric stenosis include projectile vomiting, usually occurring about 30 minutes after a feed, as well as constipation and dehydration. A palpable mass in the upper abdomen, often described as like an olive, may also be present. The persistent vomiting can lead to electrolyte disturbances, such as hypochloremia, alkalosis, and mild hypokalemia.

      Ultrasound is the preferred diagnostic tool for confirming pyloric stenosis. It can reveal specific criteria, including a pyloric muscle thickness greater than 3 mm, a pylorus longitudinal length greater than 15-17 mm, a pyloric volume greater than 1.5 cm3, and a pyloric transverse diameter greater than 13 mm.

      The definitive treatment for pyloric stenosis is pyloromyotomy, a surgical procedure that involves making an incision in the thickened pyloric muscle to relieve the obstruction. Before surgery, it is important to correct any hypovolemia and electrolyte disturbances with intravenous fluids. Overall, pyloric stenosis is a relatively common condition in infants, but with prompt diagnosis and appropriate management, it can be effectively treated.

    • This question is part of the following fields:

      • Paediatric Emergencies
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  • Question 9 - A 6 year old boy is brought into the emergency department by his...

    Correct

    • A 6 year old boy is brought into the emergency department by his father. The boy tugged on the tablecloth and a hot bowl of soup spilled onto his right leg, causing a scald. The boy is in tears and holding onto his right leg. The patient's father mentions that he gave the boy acetaminophen before coming to the emergency department. What is the most suitable additional pain relief to provide?

      Your Answer: Rectal diclofenac 1 mg/kg

      Explanation:

      For children experiencing moderate pain, diclofenac (taken orally or rectally), oral codeine, or oral morphine are suitable options for providing relief. The patient has already been given the appropriate initial analgesia for mild pain. Therefore, it is now appropriate to administer analgesia for moderate pain, following the next step on the analgesic ladder. Considering diclofenac, codeine, or oral morphine would be appropriate in this case.

      Further Reading:

      Assessment and alleviation of pain should be a priority when treating ill and injured children, according to the RCEM QEC standards. These standards state that all children attending the Emergency Department should receive analgesia for moderate and severe pain within 20 minutes of arrival. The effectiveness of the analgesia should be re-evaluated within 60 minutes of receiving the first dose. Additionally, patients in moderate pain should be offered oral analgesia at triage or assessment.

      Pain assessment in children should take into account their age. Visual analogue pain scales are commonly used, and the RCEM has developed its own version of this. Other indicators of pain, such as crying, limping, and holding or not-moving limbs, should also be observed and utilized in the pain assessment.

      Managing pain in children involves a combination of psychological strategies, non-pharmacological adjuncts, and pharmacological methods. Psychological strategies include involving parents, providing cuddles, and utilizing child-friendly environments with toys. Explanation and reassurance are also important in building trust. Distraction with stories, toys, and activities can help divert the child’s attention from the pain.

      Non-pharmacological adjuncts for pain relief in children include limb immobilization with slings, plasters, or splints, as well as dressings and other treatments such as reduction of dislocation or trephine subungual hematoma.

      Pharmacological methods for pain relief in children include the use of anesthetics, analgesics, and sedation. Topical anesthetics, such as lidocaine with prilocaine cream, tetracaine gel, or ethyl chloride spray, should be considered for children who are likely to require venesection or placement of an intravenous cannula.

      Procedural sedation in children often utilizes either ketamine or midazolam. When administering analgesia, the analgesic ladder should be followed as recommended by the RCEM.

      Overall, effective pain management in children requires a comprehensive approach that addresses both the physical and psychological aspects of pain. By prioritizing pain assessment and providing appropriate pain relief, healthcare professionals can help alleviate the suffering of ill and injured children.

    • This question is part of the following fields:

      • Paediatric Emergencies
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  • Question 10 - You are requested to evaluate a 5-year-old girl who was administered her first...

    Incorrect

    • You are requested to evaluate a 5-year-old girl who was administered her first dose of amoxicillin for the management of a respiratory tract infection. Her mother observed her face beginning to swell shortly after and her breathing becoming noisy. You determine that she is experiencing anaphylaxis. What would be the most suitable initial treatment?

      Your Answer: Hydrocortisone 100mg IV

      Correct Answer: Adrenaline 300 mcg IM

      Explanation:

      Epinephrine, also known as adrenaline, is the most crucial medication for treating anaphylaxis. It should be administered promptly to individuals experiencing an anaphylactic reaction. The preferred method of treatment is early administration of intramuscular adrenaline. It is important to be familiar with the appropriate dosage for different age groups.

      Further Reading:

      Anaphylaxis is a severe and life-threatening allergic reaction that affects the entire body. It is characterized by a rapid onset and can lead to difficulty breathing, low blood pressure, and loss of consciousness. In paediatrics, anaphylaxis is often caused by food allergies, with nuts being the most common trigger. Other causes include drugs and insect venom, such as from a wasp sting.

      When treating anaphylaxis, time is of the essence and there may not be enough time to look up medication doses. Adrenaline is the most important drug in managing anaphylaxis and should be administered as soon as possible. The recommended doses of adrenaline vary based on the age of the child. For children under 6 months, the dose is 150 micrograms, while for children between 6 months and 6 years, the dose remains the same. For children between 6 and 12 years, the dose is increased to 300 micrograms, and for adults and children over 12 years, the dose is 500 micrograms. Adrenaline can be repeated every 5 minutes if necessary.

      The preferred site for administering adrenaline is the anterolateral aspect of the middle third of the thigh. This ensures quick absorption and effectiveness of the medication. It is important to follow the Resuscitation Council guidelines for anaphylaxis management, as they have recently been updated.

      In some cases, it can be challenging to determine if a patient had a true episode of anaphylaxis. In such cases, serum tryptase levels may be measured, as they remain elevated for up to 12 hours following an acute episode of anaphylaxis. This can help confirm the diagnosis and guide further management.

      Overall, prompt recognition and administration of adrenaline are crucial in managing anaphylaxis in paediatrics. Following the recommended doses and guidelines can help ensure the best outcomes for patients experiencing this severe allergic reaction.

    • This question is part of the following fields:

      • Paediatric Emergencies
      45.5
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  • Question 11 - A 6 month old infant is brought to the emergency department by his...

    Incorrect

    • A 6 month old infant is brought to the emergency department by his father due to a 24 hour history of fever, fussiness, and crying. On examination, the infant is alert and responsive, with a temperature of 38.3ÂșC. The capillary refill time is less than 2 seconds, and there is mild redness in the throat. The left tympanic membrane appears red and bulging, while the chest is clear and the abdomen is soft with no rashes.

      What is the most suitable course of action?

      Your Answer: Discharge with advice to give regular paracetamol and ibuprofen and to return to the ED if the child becomes more unwell

      Correct Answer: Admit under paediatrics

      Explanation:

      If a child under 3 months old has a temperature of 38ÂșC or higher, it is considered a red flag according to the NICE traffic light system. This indicates that the child may have acute otitis media and it is recommended that they be admitted for further evaluation and treatment.

      Further Reading:

      Acute otitis media (AOM) is an inflammation in the middle ear accompanied by symptoms and signs of an ear infection. It is commonly seen in young children below 4 years of age, with the highest incidence occurring between 9 to 15 months of age. AOM can be caused by viral or bacterial pathogens, and co-infection with both is common. The most common viral pathogens include respiratory syncytial virus (RSV), rhinovirus, adenovirus, influenza virus, and parainfluenza virus. The most common bacterial pathogens include Streptococcus pneumoniae, Haemophilus influenzae, Moraxella catarrhalis, and Streptococcus pyogenes.

      Clinical features of AOM include ear pain (otalgia), fever, a red or cloudy tympanic membrane, and a bulging tympanic membrane with loss of anatomical landmarks. In young children, symptoms may also include crying, grabbing or rubbing the affected ear, restlessness, and poor feeding.

      Most children with AOM will recover within 3 days without treatment. Serious complications are rare but can include persistent otitis media with effusion, recurrence of infection, temporary hearing loss, tympanic membrane perforation, labyrinthitis, mastoiditis, meningitis, intracranial abscess, sinus thrombosis, and facial nerve paralysis.

      Management of AOM involves determining whether admission to the hospital is necessary based on the severity of systemic infection or suspected acute complications. For patients who do not require admission, regular pain relief with paracetamol or ibuprofen is advised. Decongestants or antihistamines are not recommended. Antibiotics may be offered immediately for patients who are systemically unwell, have symptoms and signs of a more serious illness or condition, or have a high risk of complications. For other patients, a decision needs to be made on the antibiotic strategy, considering the rarity of acute complications and the possible adverse effects of antibiotics. Options include no antibiotic prescription with advice to seek medical help if symptoms worsen rapidly or significantly, a back-up antibiotic prescription to be used if symptoms do not improve within 3 days, or an immediate antibiotic prescription with advice to seek medical advice if symptoms worsen rapidly or significantly.

      The first-line antibiotic choice for AOM is a 5-7 day course of amoxicillin. For individuals allergic to or intolerant of penicillin, clarithromycin or erythromycin a 5–7 day course of clarithromycin or erythromycin (erythromycin is preferred in pregnant women).

    • This question is part of the following fields:

      • Paediatric Emergencies
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  • Question 12 - A 2 year old male is brought to the emergency department by concerned...

    Incorrect

    • A 2 year old male is brought to the emergency department by concerned parents. The child started experiencing episodes of diarrhea and vomiting 2 days ago which have continued today. They are worried as the patient has become lethargic throughout the day and hasn't urinated for several hours. After initial assessment, you decide to administer a 10 ml/kg bolus of 0.9% sodium chloride fluid to treat suspected shock. After giving the fluid bolus, you repeat the patient's observations as shown below:

      Initial observation observation after fluid bolus
      Pulse 160 148
      Respiration rate 52 42
      Capillary refill time 5s 4s
      Temperature 37.8ÂșC 37.8ÂșC

      You notice the patient still has cool extremities and mottled skin. What is the most appropriate next step in managing this patient?

      Your Answer: Refer to paediatric intensive care

      Correct Answer: Administer further 10 ml/kg 0.9% sodium chloride fluid bolus

      Explanation:

      Gastroenteritis is a common condition in children, particularly those under the age of 5. It is characterized by the sudden onset of diarrhea, with or without vomiting. The most common cause of gastroenteritis in infants and young children is rotavirus, although other viruses, bacteria, and parasites can also be responsible. Prior to the introduction of the rotavirus vaccine in 2013, rotavirus was the leading cause of gastroenteritis in children under 5 in the UK. However, the vaccine has led to a significant decrease in cases, with a drop of over 70% in subsequent years.

      Norovirus is the most common cause of gastroenteritis in adults, but it also accounts for a significant number of cases in children. In England & Wales, there are approximately 8,000 cases of norovirus each year, with 15-20% of these cases occurring in children under 9.

      When assessing a child with gastroenteritis, it is important to consider whether there may be another more serious underlying cause for their symptoms. Dehydration assessment is also crucial, as some children may require intravenous fluids. The NICE traffic light system can be used to identify the risk of serious illness in children under 5.

      In terms of investigations, stool microbiological testing may be indicated in certain cases, such as when the patient has been abroad, if diarrhea lasts for more than 7 days, or if there is uncertainty over the diagnosis. U&Es may be necessary if intravenous fluid therapy is required or if there are symptoms and/or signs suggestive of hypernatremia. Blood cultures may be indicated if sepsis is suspected or if antibiotic therapy is planned.

      Fluid management is a key aspect of treating children with gastroenteritis. In children without clinical dehydration, normal oral fluid intake should be encouraged, and oral rehydration solution (ORS) supplements may be considered. For children with dehydration, ORS solution is the preferred method of rehydration, unless intravenous fluid therapy is necessary. Intravenous fluids may be required for children with shock or those who are unable to tolerate ORS solution.

      Antibiotics are generally not required for gastroenteritis in children, as most cases are viral or self-limiting. However, there are some exceptions, such as suspected or confirmed sepsis, Extraintestinal spread of bacterial infection, or specific infections like Clostridium difficile-associated pseudomembranous enterocolitis or giardiasis.

    • This question is part of the following fields:

      • Paediatric Emergencies
      26
      Seconds
  • Question 13 - A 4 year old child is brought to the emergency department by worried...

    Correct

    • A 4 year old child is brought to the emergency department by worried parents. The parents inform you that the patient had a slight fever and a runny nose for 2 days before they observed a barking cough. What would be the most suitable course of treatment?

      Your Answer: Oral dexamethasone

      Explanation:

      Corticosteroids are the primary treatment for croup, a condition characterized by a barking cough in infants. To address this, oral dexamethasone is administered at a dosage of 0.15mg/kg. In cases of severe croup, nebulized adrenaline is utilized.

      Further Reading:

      Croup, also known as laryngotracheobronchitis, is a respiratory infection that primarily affects infants and toddlers. It is characterized by a barking cough and can cause stridor (a high-pitched sound during breathing) and respiratory distress due to swelling of the larynx and excessive secretions. The majority of cases are caused by parainfluenza viruses 1 and 3. Croup is most common in children between 6 months and 3 years of age and tends to occur more frequently in the autumn.

      The clinical features of croup include a barking cough that is worse at night, preceded by symptoms of an upper respiratory tract infection such as cough, runny nose, and congestion. Stridor, respiratory distress, and fever may also be present. The severity of croup can be graded using the NICE system, which categorizes it as mild, moderate, severe, or impending respiratory failure based on the presence of symptoms such as cough, stridor, sternal/intercostal recession, agitation, lethargy, and decreased level of consciousness. The Westley croup score is another commonly used tool to assess the severity of croup based on the presence of stridor, retractions, air entry, oxygen saturation levels, and level of consciousness.

      In cases of severe croup with significant airway obstruction and impending respiratory failure, symptoms may include a minimal barking cough, harder-to-hear stridor, chest wall recession, fatigue, pallor or cyanosis, decreased level of consciousness, and tachycardia. A respiratory rate over 70 breaths per minute is also indicative of severe respiratory distress.

      Children with moderate or severe croup, as well as those with certain risk factors such as chronic lung disease, congenital heart disease, neuromuscular disorders, immunodeficiency, age under 3 months, inadequate fluid intake, concerns about care at home, or high fever or a toxic appearance, should be admitted to the hospital. The mainstay of treatment for croup is corticosteroids, which are typically given orally. If the child is too unwell to take oral medication, inhaled budesonide or intramuscular dexamethasone may be used as alternatives. Severe cases may require high-flow oxygen and nebulized adrenaline.

      When considering the differential diagnosis for acute stridor and breathing difficulty, non-infective causes such as inhaled foreign bodies.

    • This question is part of the following fields:

      • Paediatric Emergencies
      12.3
      Seconds
  • Question 14 - A child with a known severe peanut allergy is brought into the emergency...

    Correct

    • A child with a known severe peanut allergy is brought into the emergency room after experiencing lip swelling and difficulty breathing following a suspected exposure. Which medication is the most suitable to administer to patients with anaphylaxis after initial resuscitation?

      Your Answer: Cetirizine

      Explanation:

      In cases of anaphylaxis, it is important to administer non-sedating antihistamines after adrenaline administration and initial resuscitation. Previous guidelines recommended the use of chlorpheniramine and hydrocortisone as third line treatments, but the 2021 guidelines have removed this recommendation. Corticosteroids are no longer advised. Instead, it is now recommended to use non-sedating antihistamines such as cetirizine, loratadine, and fexofenadine, as alternatives to the sedating antihistamine chlorpheniramine. The top priority treatments for anaphylaxis are adrenaline, oxygen, and fluids. The Resuscitation Council advises that administration of non-sedating antihistamines should occur after the initial resuscitation.

      Further Reading:

      Anaphylaxis is a severe and life-threatening hypersensitivity reaction that can have sudden onset and progression. It is characterized by skin or mucosal changes and can lead to life-threatening airway, breathing, or circulatory problems. Anaphylaxis can be allergic or non-allergic in nature.

      In allergic anaphylaxis, there is an immediate hypersensitivity reaction where an antigen stimulates the production of IgE antibodies. These antibodies bind to mast cells and basophils. Upon re-exposure to the antigen, the IgE-covered cells release histamine and other inflammatory mediators, causing smooth muscle contraction and vasodilation.

      Non-allergic anaphylaxis occurs when mast cells degrade due to a non-immune mediator. The clinical outcome is the same as in allergic anaphylaxis.

      The management of anaphylaxis is the same regardless of the cause. Adrenaline is the most important drug and should be administered as soon as possible. The recommended doses for adrenaline vary based on age. Other treatments include high flow oxygen and an IV fluid challenge. Corticosteroids and chlorpheniramine are no longer recommended, while non-sedating antihistamines may be considered as third-line treatment after initial stabilization of airway, breathing, and circulation.

      Common causes of anaphylaxis include food (such as nuts, which is the most common cause in children), drugs, and venom (such as wasp stings). Sometimes it can be challenging to determine if a patient had a true episode of anaphylaxis. In such cases, serum tryptase levels may be measured, as they remain elevated for up to 12 hours following an acute episode of anaphylaxis.

      The Resuscitation Council (UK) provides guidelines for the management of anaphylaxis, including a visual algorithm that outlines the recommended steps for treatment.

    • This question is part of the following fields:

      • Paediatric Emergencies
      9.6
      Seconds
  • Question 15 - A 2-year-old toddler is brought to the emergency department by worried parents. The...

    Correct

    • A 2-year-old toddler is brought to the emergency department by worried parents. The parents inform you that the child had a slight fever and a runny nose for 48 hours before developing a barking cough last night. During the examination, the child's temperature is recorded as 38.1ÂșC and you observe a high-pitched wheeze during inspiration.

      What is the most suitable initial treatment option?

      Your Answer: Oral dexamethasone

      Explanation:

      Corticosteroids are the primary treatment for croup. In this case, the child’s symptoms align with croup. The recommended initial medication for croup is a one-time oral dose of dexamethasone, regardless of the severity of the condition. The dosage is typically 0.15mg per kilogram of the child’s weight.

      Further Reading:

      Croup, also known as laryngotracheobronchitis, is a respiratory infection that primarily affects infants and toddlers. It is characterized by a barking cough and can cause stridor (a high-pitched sound during breathing) and respiratory distress due to swelling of the larynx and excessive secretions. The majority of cases are caused by parainfluenza viruses 1 and 3. Croup is most common in children between 6 months and 3 years of age and tends to occur more frequently in the autumn.

      The clinical features of croup include a barking cough that is worse at night, preceded by symptoms of an upper respiratory tract infection such as cough, runny nose, and congestion. Stridor, respiratory distress, and fever may also be present. The severity of croup can be graded using the NICE system, which categorizes it as mild, moderate, severe, or impending respiratory failure based on the presence of symptoms such as cough, stridor, sternal/intercostal recession, agitation, lethargy, and decreased level of consciousness. The Westley croup score is another commonly used tool to assess the severity of croup based on the presence of stridor, retractions, air entry, oxygen saturation levels, and level of consciousness.

      In cases of severe croup with significant airway obstruction and impending respiratory failure, symptoms may include a minimal barking cough, harder-to-hear stridor, chest wall recession, fatigue, pallor or cyanosis, decreased level of consciousness, and tachycardia. A respiratory rate over 70 breaths per minute is also indicative of severe respiratory distress.

      Children with moderate or severe croup, as well as those with certain risk factors such as chronic lung disease, congenital heart disease, neuromuscular disorders, immunodeficiency, age under 3 months, inadequate fluid intake, concerns about care at home, or high fever or a toxic appearance, should be admitted to the hospital. The mainstay of treatment for croup is corticosteroids, which are typically given orally. If the child is too unwell to take oral medication, inhaled budesonide or intramuscular dexamethasone may be used as alternatives. Severe cases may require high-flow oxygen and nebulized adrenaline.

      When considering the differential diagnosis for acute stridor and breathing difficulty, non-infective causes such as inhaled foreign bodies.

    • This question is part of the following fields:

      • Paediatric Emergencies
      11.1
      Seconds
  • Question 16 - You are present at a pediatric cardiac arrest. The resuscitation team has, unfortunately,...

    Incorrect

    • You are present at a pediatric cardiac arrest. The resuscitation team has, unfortunately, been unable to establish intravenous (IV) access. The anesthesiologist recommends administering a bolus dose of adrenaline through the endotracheal tube (ETT). The child weighs 30 kg.
      What is the appropriate dose of adrenaline to administer via the ETT in this scenario?

      Your Answer: 30 mcg

      Correct Answer: 2.5 mg

      Explanation:

      When administering adrenaline through the ET tube in pediatric cardiac arrest, the recommended dose is 100 mcg/kg. In this particular scenario, the child weighs 25 kg, so the appropriate amount to administer would be 2500 mcg (equivalent to 2.5 mg).

    • This question is part of the following fields:

      • Paediatric Emergencies
      19
      Seconds
  • Question 17 - A parent brings her 3 year old daughter to the emergency department with...

    Correct

    • A parent brings her 3 year old daughter to the emergency department with a 4 cm laceration on her right arm. The wound needs to be stitched. Your attending physician recommends using ketamine sedation as the child is very upset about the injury. Before administering the sedation, you assess for any possible contraindications to ketamine. Which of the following is a known contraindication to ketamine use?

      Your Answer: Pulmonary hypertension

      Explanation:

      Ketamine should not be used in individuals who have pulmonary hypertension, as it can worsen their condition. Additionally, it is contraindicated in children under 12 months old, as they are at a higher risk of experiencing laryngospasm and airway complications. Other contraindications include a high risk of laryngospasm (such as having an active respiratory infection or asthma), unstable or abnormal airway (due to tracheal surgery or stenosis), active upper or lower respiratory tract infection, proposed procedure within the mouth or pharynx, severe psychological problems, significant cardiac disease, intracranial hypertension with cerebrospinal fluid obstruction, intraocular pathology, previous psychotic illness, uncontrolled epilepsy, hyperthyroidism or taking thyroid medication, porphyria, prior adverse reaction to ketamine, altered conscious level due to acute illness or injury, and drug or alcohol intoxication.

      Further Reading:

      Ketamine sedation in children should only be performed by a trained and competent clinician who is capable of managing complications, especially those related to the airway. The clinician should have completed the necessary training and have the appropriate skills for procedural sedation. It is important for the clinician to consider the length of the procedure before deciding to use ketamine sedation, as lengthy procedures may be more suitable for general anesthesia.

      Examples of procedures where ketamine may be used in children include suturing, fracture reduction/manipulation, joint reduction, burn management, incision and drainage of abscess, tube thoracostomy placement, foreign body removal, and wound exploration/irrigation.

      During the ketamine sedation procedure, a minimum of three staff members should be present: a doctor to manage the sedation and airway, a clinician to perform the procedure, and an experienced nurse to monitor and support the patient, family, and clinical staff. The child should be sedated and managed in a high dependency or resuscitation area with immediate access to resuscitation facilities. Monitoring should include sedation level, pain, ECG, blood pressure, respiration, pulse oximetry, and capnography, with observations taken and recorded every 5 minutes.

      Prior to the procedure, consent should be obtained from the parent or guardian after discussing the proposed procedure and use of ketamine sedation. The risks and potential complications should be explained, including mild or moderate/severe agitation, rash, vomiting, transient clonic movements, and airway problems. The parent should also be informed that certain common side effects, such as nystagmus, random purposeless movements, muscle twitching, rash, and vocalizations, are of no clinical significance.

      Topical anesthesia may be considered to reduce the pain of intravenous cannulation, but this step may not be advisable if the procedure is urgent. The clinician should also ensure that key resuscitation drugs are readily available and doses are calculated for the patient in case they are needed.

      Before administering ketamine, the child should be prepared by encouraging the parents or guardians to talk to them about happy thoughts and topics to minimize unpleasant emergence phenomena. The dose of ketamine is typically 1.0 mg/kg by slow intravenous injection over at least one minute, with additional doses of 0.5 mg/kg administered as required after 5-10 minutes to achieve the desired dissociative state.

    • This question is part of the following fields:

      • Paediatric Emergencies
      9.7
      Seconds
  • Question 18 - A 5 year old female is brought to the emergency department by concerned...

    Correct

    • A 5 year old female is brought to the emergency department by concerned parents. The child started experiencing episodes of diarrhea and vomiting 2 days ago which have continued today. They are worried as the patient appears more lethargic and is not urinating as frequently as usual. Upon assessment, the patient is slow to respond to verbal stimuli and has mottled skin, cold extremities, and a capillary refill time of 4 to 5 seconds. The patient's vital signs are as follows:

      Pulse: 142 bpm
      Respiration rate: 35 bpm
      Temperature: 37.6ÂșC

      What is the most appropriate next course of action for this patient?

      Your Answer: Rapid intravenous infusion of 10 ml/kg of 0.9% sodium chloride solution

      Explanation:

      The most appropriate next step in managing this patient is to rapidly infuse 10 ml/kg of 0.9% sodium chloride solution intravenously. This is because the girl is showing signs of severe dehydration, such as lethargy, decreased urine output, mottled skin, and prolonged capillary refill time. Rapid intravenous fluid administration is necessary to quickly restore her fluid volume and prevent further complications.

      Further Reading:

      Gastroenteritis is a common condition in children, particularly those under the age of 5. It is characterized by the sudden onset of diarrhea, with or without vomiting. The most common cause of gastroenteritis in infants and young children is rotavirus, although other viruses, bacteria, and parasites can also be responsible. Prior to the introduction of the rotavirus vaccine in 2013, rotavirus was the leading cause of gastroenteritis in children under 5 in the UK. However, the vaccine has led to a significant decrease in cases, with a drop of over 70% in subsequent years.

      Norovirus is the most common cause of gastroenteritis in adults, but it also accounts for a significant number of cases in children. In England & Wales, there are approximately 8,000 cases of norovirus each year, with 15-20% of these cases occurring in children under 9.

      When assessing a child with gastroenteritis, it is important to consider whether there may be another more serious underlying cause for their symptoms. Dehydration assessment is also crucial, as some children may require intravenous fluids. The NICE traffic light system can be used to identify the risk of serious illness in children under 5.

      In terms of investigations, stool microbiological testing may be indicated in certain cases, such as when the patient has been abroad, if diarrhea lasts for more than 7 days, or if there is uncertainty over the diagnosis. U&Es may be necessary if intravenous fluid therapy is required or if there are symptoms and/or signs suggestive of hypernatremia. Blood cultures may be indicated if sepsis is suspected or if antibiotic therapy is planned.

      Fluid management is a key aspect of treating children with gastroenteritis. In children without clinical dehydration, normal oral fluid intake should be encouraged, and oral rehydration solution (ORS) supplements may be considered. For children with dehydration, ORS solution is the preferred method of rehydration, unless intravenous fluid therapy is necessary. Intravenous fluids may be required for children with shock or those who are unable to tolerate ORS solution.

      Antibiotics are generally not required for gastroenteritis in children, as most cases are viral or self-limiting. However, there are some exceptions, such as suspected or confirmed sepsis, Extraintestinal spread of bacterial infection, or specific infections like Clostridium difficile-associated pseudomembranous enterocolitis or giardiasis.

    • This question is part of the following fields:

      • Paediatric Emergencies
      28
      Seconds
  • Question 19 - A 3 year old boy is brought into the emergency department by concerned...

    Incorrect

    • A 3 year old boy is brought into the emergency department by concerned parents. The parents inform you that the patient has had a persistent cough and runny nose for the past 2-3 days. However, today they noticed that the patient was having difficulty breathing and was coughing up a lot of mucus. They suspected that the patient might have croup. Upon examination, you hear audible stridor and observe rapid breathing. There are no signs of difficulty swallowing or excessive drooling. The patient is given dexamethasone and nebulized adrenaline, but subsequent observations reveal an increase in respiratory rate and the patient appears increasingly tired.

      What is the most likely underlying diagnosis?

      Your Answer: Epiglottitis

      Correct Answer: Bacterial tracheitis

      Explanation:

      Patients who have bacterial tracheitis usually do not show any improvement when treated with steroids and adrenaline nebulizers. The symptoms of bacterial tracheitis include a prelude of upper respiratory tract infection symptoms, followed by a rapid decline in health with the presence of stridor and difficulty breathing. Despite treatment with steroids and adrenaline, there is no improvement in the patient’s condition. On the other hand, patients with epiglottitis commonly experience difficulty swallowing and excessive saliva production.

      Further Reading:

      Croup, also known as laryngotracheobronchitis, is a respiratory infection that primarily affects infants and toddlers. It is characterized by a barking cough and can cause stridor (a high-pitched sound during breathing) and respiratory distress due to swelling of the larynx and excessive secretions. The majority of cases are caused by parainfluenza viruses 1 and 3. Croup is most common in children between 6 months and 3 years of age and tends to occur more frequently in the autumn.

      The clinical features of croup include a barking cough that is worse at night, preceded by symptoms of an upper respiratory tract infection such as cough, runny nose, and congestion. Stridor, respiratory distress, and fever may also be present. The severity of croup can be graded using the NICE system, which categorizes it as mild, moderate, severe, or impending respiratory failure based on the presence of symptoms such as cough, stridor, sternal/intercostal recession, agitation, lethargy, and decreased level of consciousness. The Westley croup score is another commonly used tool to assess the severity of croup based on the presence of stridor, retractions, air entry, oxygen saturation levels, and level of consciousness.

      In cases of severe croup with significant airway obstruction and impending respiratory failure, symptoms may include a minimal barking cough, harder-to-hear stridor, chest wall recession, fatigue, pallor or cyanosis, decreased level of consciousness, and tachycardia. A respiratory rate over 70 breaths per minute is also indicative of severe respiratory distress.

      Children with moderate or severe croup, as well as those with certain risk factors such as chronic lung disease, congenital heart disease, neuromuscular disorders, immunodeficiency, age under 3 months, inadequate fluid intake, concerns about care at home, or high fever or a toxic appearance, should be admitted to the hospital. The mainstay of treatment for croup is corticosteroids, which are typically given orally. If the child is too unwell to take oral medication, inhaled budesonide or intramuscular dexamethasone may be used as alternatives. Severe cases may require high-flow oxygen and nebulized adrenaline.

      When considering the differential diagnosis for acute stridor and breathing difficulty, non-infective causes such as inhaled foreign bodies

    • This question is part of the following fields:

      • Paediatric Emergencies
      15
      Seconds
  • Question 20 - A 7 year old girl is brought into the emergency department after being...

    Correct

    • A 7 year old girl is brought into the emergency department after being bitten by a bee. The patient's arm has started to swell and she is having difficulty breathing. You diagnose anaphylaxis and decide to administer adrenaline. What is the most suitable dose to give this patient?

      Your Answer: 300 micrograms (0.3ml 1 in 1,000) by intramuscular injection

      Explanation:

      A 7-year-old girl is brought to the emergency department after being bitten by a bee. She is experiencing swelling in her arm and difficulty breathing, which are signs of anaphylaxis. To treat this condition, the most suitable dose of adrenaline to administer to the patient is 300 micrograms (0.3ml 1 in 1,000) by intramuscular injection.

      Further Reading:

      Anaphylaxis is a severe and life-threatening hypersensitivity reaction that can have sudden onset and progression. It is characterized by skin or mucosal changes and can lead to life-threatening airway, breathing, or circulatory problems. Anaphylaxis can be allergic or non-allergic in nature.

      In allergic anaphylaxis, there is an immediate hypersensitivity reaction where an antigen stimulates the production of IgE antibodies. These antibodies bind to mast cells and basophils. Upon re-exposure to the antigen, the IgE-covered cells release histamine and other inflammatory mediators, causing smooth muscle contraction and vasodilation.

      Non-allergic anaphylaxis occurs when mast cells degrade due to a non-immune mediator. The clinical outcome is the same as in allergic anaphylaxis.

      The management of anaphylaxis is the same regardless of the cause. Adrenaline is the most important drug and should be administered as soon as possible. The recommended doses for adrenaline vary based on age. Other treatments include high flow oxygen and an IV fluid challenge. Corticosteroids and chlorpheniramine are no longer recommended, while non-sedating antihistamines may be considered as third-line treatment after initial stabilization of airway, breathing, and circulation.

      Common causes of anaphylaxis include food (such as nuts, which is the most common cause in children), drugs, and venom (such as wasp stings). Sometimes it can be challenging to determine if a patient had a true episode of anaphylaxis. In such cases, serum tryptase levels may be measured, as they remain elevated for up to 12 hours following an acute episode of anaphylaxis.

      The Resuscitation Council (UK) provides guidelines for the management of anaphylaxis, including a visual algorithm that outlines the recommended steps for treatment.

    • This question is part of the following fields:

      • Paediatric Emergencies
      13.2
      Seconds

SESSION STATS - PERFORMANCE PER SPECIALTY

Paediatric Emergencies (14/20) 70%
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