Chronic Paediatric Conditions

Chronic Paediatric Conditions UK Medical PG Question 1: A 8-year-old child presents with fever, irritability, and a widespread petechial rash that doesn't blanch with pressure. The child appears unwell and has neck stiffness. What is the most appropriate immediate management?

• A. Oral antibiotics
• B. IV benzylpenicillin (Correct Answer)
• C. Lumbar puncture
• D. Blood cultures
• E. CT head

Chronic Paediatric Conditions Explanation: ***IV benzylpenicillin***- The constellation of fever, irritability, widespread non-blanching petechial rash, unwell appearance, and neck stiffness is highly suggestive of **meningococcal disease** (meningitis with or without septicaemia), a medical emergency.- **Immediate empirical intravenous antibiotics**, such as **benzylpenicillin**, are critical to reduce mortality and morbidity in suspected meningococcal disease and should not be delayed by investigations. *Oral antibiotics*- The child presents with severe symptoms, including an **unwell appearance** and **non-blanching rash**, indicating a life-threatening infection requiring urgent intervention.- **Oral antibiotics** are inadequate for treating severe, rapidly progressing infections like meningococcal disease due to potentially slow absorption and insufficient blood-brain barrier penetration.*Lumbar puncture*- While a **lumbar puncture** is crucial for definitive diagnosis of meningitis, it must **not delay the immediate administration of IV antibiotics** in suspected meningococcal disease.- In a critically unwell child with signs of increased intracranial pressure (e.g., severe irritability, neck stiffness in context of severe illness), a lumbar puncture carries a risk of **herniation** and should be deferred until after antibiotics are given and/or a CT head rules out a space-occupying lesion.*Blood cultures*- **Blood cultures** are important for identifying the causative organism and guiding specific antibiotic therapy, but they should be taken **concurrently with or immediately after administering the first dose of IV antibiotics**.- Delaying antibiotic administration to obtain blood cultures can have severe consequences in a rapidly deteriorating patient with suspected **meningococcal septicaemia**.*CT head*- A **CT head** may be indicated to rule out complications like **cerebral edema** or **abscess** before a lumbar puncture, especially if there are signs of raised intracranial pressure.- However, like other investigations, a **CT head should not delay the immediate administration of life-saving IV antibiotics** in a child with suspected meningococcal disease, where time to treatment directly impacts prognosis.

Chronic Paediatric Conditions UK Medical PG Question 2: A 4-year-old child presents with fever, irritability, and neck stiffness. Lumbar puncture shows: opening pressure 25 cmH₂O, WCC 800/μL (90% neutrophils), protein 2.8 g/L, glucose 1.2 mmol/L (serum glucose 6.0 mmol/L). What is the most likely diagnosis?

• A. Viral meningitis
• B. Bacterial meningitis (Correct Answer)
• C. Tuberculous meningitis
• D. Fungal meningitis
• E. Normal CSF

Chronic Paediatric Conditions Explanation: ***Bacterial meningitis***- The constellation of **fever**, **neck stiffness**, severely elevated CSF **protein** (2.8 g/L), and profoundly low CSF **glucose** (ratio 0.2) is classic for acute bacterial infection.- The marked CSF pleocytosis (800/μL) with a predominant population of **neutrophils** (90%) indicates a rapidly progressive, pyogenic process.*Viral meningitis*- Characterized by **lymphocytic pleocytosis** (predominant lymphocytes) rather than the neutrophilic dominance seen here.- CSF glucose levels are typically **normal** or only mildly reduced, unlike the severe hypoglycemia reported in this patient.*Tuberculous meningitis*- While associated with low CSF glucose and high protein, it generally presents **subacutely** or chronically over weeks, not acutely.- CSF pleocytosis is usually **lymphocytic** or monocytic, not the acute neutrophilic predominance found in this sample.*Fungal meningitis*- This is rare in immunocompetent children, usually follows an indolent or **chronic** course, and typically presents with **lymphocytic** pleocytosis.- The acute presentation with fever, irritability, and prominent neutrophilia points strongly away from a fungal etiology.*Normal CSF*- Normal CSF findings include an opening pressure < 18 cmH₂O, WCC < 5/μL, and a CSF/serum glucose ratio > 0.6.- All measured parameters (pressure 25, WCC 800, glucose ratio 0.2) are significantly **abnormal**, definitively ruling out normal CSF.

Chronic Paediatric Conditions UK Medical PG Question 3: A 3-year-old child presents with a barking cough, inspiratory stridor, and hoarse voice. The symptoms are worse at night. The child is alert and playful. What is the most likely diagnosis?

• A. Epiglottitis
• B. Croup (Correct Answer)
• C. Bronchiolitis
• D. Pneumonia
• E. Foreign body aspiration

Chronic Paediatric Conditions Explanation: ***Croup*** - The presentation of a **barking cough**, **inspiratory stridor**, and **hoarse voice** in a 3-year-old is the classic triad for **Croup** (laryngotracheobronchitis), typically caused by the **Parainfluenza virus**. - Symptoms are typically worse at night due to increased **vagal tone** and decreased ambient humidity, yet the child remains alert and non-toxic, which is characteristic of mild-to-moderate croup. *Epiglottitis* - This condition presents as a medical emergency with rapid onset of **high fever**, severe **dysphagia**, drooling, and a **muffled voice**, but usually lacks the characteristic **barking cough**. - The child with epiglottitis typically appears **toxic**, apprehensive, and prefers the **tripod position**, unlike the alert and playful child described. *Bronchiolitis* - Bronchiolitis is an infection of the small airways, primarily causing **wheezing**, **tachypnea**, and signs of **lower respiratory distress**, usually without stridor or the specific barking cough. - It predominantly affects infants under 2 years of age and is most often caused by **Respiratory Syncytial Virus (RSV)**. *Pneumonia* - This is an infection of the lung parenchyma, presenting with fever, **tachypnea**, and often a productive cough accompanied by focal findings like **crackles** or **dullness** on chest exam. - Pneumonia does not typically cause prominent **inspiratory stridor** or the characteristic **barking cough** associated with upper airway swelling. *Foreign body aspiration* - This diagnosis usually involves a sudden onset of **choking** or coughing, and if the object is lodged in the larynx or trachea, it causes stridor, but the symptoms do not typically fluctuate and worsen specifically **at night**.

Chronic Paediatric Conditions UK Medical PG Question 4: A 9-year-old boy with known asthma presents to the emergency department with an acute exacerbation. Following administration of oxygen, nebulized salbutamol, ipratropium bromide, and oral prednisolone, he remains in respiratory distress with oxygen saturation 92% on high-flow oxygen, peak flow 30% of predicted, and poor respiratory effort. What is the appropriate dose and route of magnesium sulphate administration in this clinical scenario?

• A. 40 mg/kg (maximum 2 g) intravenous infusion over 20 minutes (Correct Answer)
• B. 25 mg/kg (maximum 1 g) intravenous bolus over 5 minutes
• C. 40 mg/kg nebulized with salbutamol
• D. 50 mg/kg (maximum 2.5 g) intravenous infusion over 30 minutes
• E. 150 mg nebulized with ipratropium bromide

Chronic Paediatric Conditions Explanation: ***40 mg/kg (maximum 2 g) intravenous infusion over 20 minutes*** - This patient presents with a **severe acute asthma exacerbation** (peak flow 30% predicted, poor respiratory effort, poor response to initial therapies), necessitating adjunctive intravenous magnesium sulphate. - Current guidelines recommend **intravenous magnesium sulphate** at **40 mg/kg** (maximum 2 g) administered as a slow **infusion over 20 minutes** for children with severe refractory asthma. *25 mg/kg (maximum 1 g) intravenous bolus over 5 minutes* - This **dose (25 mg/kg)** is below the recommended concentration for treating **severe pediatric asthma exacerbations**, which typically calls for 40 mg/kg. - Administering magnesium as a rapid **intravenous bolus over 5 minutes** significantly increases the risk of adverse effects like **hypotension** and cardiac arrhythmias. *40 mg/kg nebulized with salbutamol* - While **nebulized magnesium sulphate** has been studied, its efficacy for **life-threatening asthma exacerbations** is not as well-established as the intravenous route, especially after failure of initial nebulized bronchodilators. - For severe, refractory asthma, **systemic (intravenous) administration** is preferred as it ensures better absorption and clinical effect compared to nebulized delivery. *50 mg/kg (maximum 2.5 g) intravenous infusion over 30 minutes* - This dose of **50 mg/kg** exceeds the standard **maximum recommended dose of 2 g** for intravenous magnesium sulphate in pediatric asthma, raising concerns for increased toxicity without additional therapeutic benefit. - Although a slow infusion, the **recommended duration** is typically 20 minutes for managing acute asthma effectively while minimizing side effects. *150 mg nebulized with ipratropium bromide* - The dose of **150 mg** is an incorrect fixed dose for nebulized magnesium sulphate in children; dosing is typically **weight-based**, and this combination with ipratropium bromide is not standard. - In a **life-threatening asthma exacerbation** with poor respiratory effort, **systemic (intravenous) magnesium sulphate** is the indicated adjunctive treatment, as nebulized delivery is less effective in this critical scenario.

Chronic Paediatric Conditions UK Medical PG Question 5: A 6-month-old baby presents with failure to thrive, chronic diarrhea, and recurrent respiratory infections. Sweat chloride test is 70 mmol/L (normal <40). What is the most likely diagnosis?

• A. Celiac disease
• B. Cystic fibrosis (Correct Answer)
• C. Immunodeficiency
• D. Inflammatory bowel disease
• E. Lactose intolerance

Chronic Paediatric Conditions Explanation: ***Cystic fibrosis***- The constellation of **failure to thrive**, chronic **malabsorptive diarrhea** (due to **pancreatic insufficiency**), and recurrent **respiratory infections** (due to thick mucus) is classic for **Cystic fibrosis**.- A sweat chloride level of 70 mmol/L is diagnostic for **Cystic fibrosis** in an infant (cut-off is typically >60 mmol/L), confirming the defect in the **CFTR channel**.*Celiac disease*- While a cause of failure to thrive and chronic diarrhea, symptoms typically manifest after the introduction of **gluten** (usually after 6 months of age) and often involve abdominal distension.- It does not cause recurrent respiratory infections as a primary feature, nor is it associated with an elevated **sweat chloride** level.*Immunodeficiency*- This could explain **recurrent respiratory infections** and failure to thrive, but it typically does not cause the specific syndrome of chronic steatorrhea due to **pancreatic insufficiency**.- Immunodeficiency conditions do not result in an abnormally high **sweat chloride** test result.*Inflammatory bowel disease*- IBD rarely presents in early infancy (6 months) and usually causes features like **bloody diarrhea** and **abdominal pain** rather than the typical **steatorrhea** associated with pancreatic insufficiency.- IBD is not associated with an elevated **sweat chloride** test or recurrent sino-pulmonary infections driven by mucus accumulation.*Lactose intolerance*- This causes osmotic diarrhea and potentially failure to thrive, but the symptoms are strictly gastrointestinal and often improve when **lactose** is removed from the diet.- It does not explain the hallmark triad of pulmonary disease, malabsorption, and the pathognomonic **elevated sweat chloride**.

Chronic Paediatric Conditions Flashcard 1 of 5

Question: Down's syndrome is managed by a _____ whose care is normally coordinated by a community or neurodisability paediatrician

Answer: MDT

Chronic Paediatric Conditions Flashcard 2 of 5

Question: Key risk factors for cerebral palsy include _____, low birth weight, & TORCH infections

Answer: prematurity

Chronic Paediatric Conditions Flashcard 3 of 5

Question: Down's Syndrome is suggested by _____ hCG, increased nuchal thickness, decreased PAPPA

Answer: increased

Chronic Paediatric Conditions Flashcard 4 of 5

Question: Around ~_____% of children with simple febrile seizures develop epilepsy

Answer: 1

Chronic Paediatric Conditions Flashcard 5 of 5

Question: Children with Down's Syndrome are prone to _____

Answer: snoring