A 4-year-old boy with sickle cell disease presents to the emergency department with fever of 39.5°C (103.1°F), lethargy, and tachycardia. His last vaccination was 6 months ago. BP is 85/50 mmHg, HR 160/min, RR 36/min. He appears ill with capillary refill of 4 seconds. Labs show: WBC 2,500/μL with 60% neutrophils, hemoglobin 6.2 g/dL (baseline 7.5 g/dL), platelets 95,000/μL, reticulocyte count 0.2%. Evaluate the prioritization of management interventions for this presentation.
Q2
A 16-year-old girl presents to the emergency department with confusion, tachycardia (HR 145/min), and temperature of 40.2°C (104.4°F). Her mother reports she has been taking medication for depression. On examination, she has dilated pupils, flushed dry skin, hyperactive bowel sounds, and sustained ankle clonus with hyperreflexia. Labs show: WBC 14,000/μL, CK 2,500 U/L, creatinine 1.4 mg/dL. She takes fluoxetine and recently started a new medication from another provider. Which therapeutic intervention addresses the most likely diagnosis?
Q3
A 10-month-old infant is brought to the emergency department following a brief resolved unexplained event (BRUE). The parents report the infant suddenly became limp, pale, stopped breathing for about 20 seconds, then spontaneously recovered. The infant is now alert, feeding well, and appears normal. Physical examination is unremarkable. The infant was born at term, has normal development, and this is the first such episode. Evaluate the most appropriate management strategy.
Q4
A 7-year-old boy presents to the emergency department with fever to 40°C (104°F), severe sore throat, drooling, and respiratory distress. He is sitting upright in tripod position, appears toxic, and has inspiratory stridor. His immunization status is unknown as the family recently immigrated. Oxygen saturation is 91% on room air. Lateral neck X-ray shows a thumb sign. Which of the following approaches best balances the immediate management priorities?
Q5
A 4-year-old boy is brought to the emergency department after ingesting an unknown quantity of his grandmother's iron tablets 2 hours ago. He initially vomited twice but now appears stable. Vital signs are: BP 100/65 mmHg, HR 110/min, RR 24/min. Abdominal X-ray shows multiple radiopaque tablets in the stomach. Serum iron level is 425 mcg/dL (normal: 50-120 mcg/dL). Which finding would most strongly indicate the need for immediate chelation therapy with deferoxamine?
Pediatric emergency management US Medical PG Practice Questions and MCQs
Question 1: A 4-year-old boy with sickle cell disease presents to the emergency department with fever of 39.5°C (103.1°F), lethargy, and tachycardia. His last vaccination was 6 months ago. BP is 85/50 mmHg, HR 160/min, RR 36/min. He appears ill with capillary refill of 4 seconds. Labs show: WBC 2,500/μL with 60% neutrophils, hemoglobin 6.2 g/dL (baseline 7.5 g/dL), platelets 95,000/μL, reticulocyte count 0.2%. Evaluate the prioritization of management interventions for this presentation.
A. Fluid bolus, blood cultures and empiric ceftriaxone plus vancomycin, then address anemia (Correct Answer)
B. Exchange transfusion for acute chest syndrome
C. Hydroxyurea initiation and antipyretics with close monitoring
D. Immediate packed RBC transfusion as the primary intervention
E. Broad-spectrum IV antibiotics after blood culture, then fluid resuscitation
Explanation: ***Fluid bolus, blood cultures and empiric ceftriaxone plus vancomycin, then address anemia***
- The patient presents in **septic shock** (tachycardia, hypotension, prolonged capillary refill), requiring immediate **fluid resuscitation** as the first step.
- Due to **functional asplenia**, patients with sickle cell disease are at high risk for fatal sepsis from **encapsulated organisms**, making urgent blood cultures and **empiric antibiotics** (e.g., ceftriaxone) vital following stabilization.
*Exchange transfusion for acute chest syndrome*
- **Acute chest syndrome** typically presents with respiratory distress and new pulmonary infiltrates, which are not the primary findings in this hemodynamic emergency.
- While serious, life-threatening **septic shock** takes priority over interventions for localized vaso-occlusive complications.
*Hydroxyurea initiation and antipyretics with close monitoring*
- **Hydroxyurea** is a long-term maintenance therapy used to increase **HbF** and is never appropriate for managing an acute, life-threatening crisis.
- Relying on antipyretics and monitoring in a patient with **hypotension** and fever would be inadequate and likely lead to clinical deterioration.
*Immediate packed RBC transfusion as the primary intervention*
- Although the patient has an **aplastic crisis** (low reticulocyte count and decreased hemoglobin), crystalloid **fluid boluses** are faster to administer for immediate shock management.
- Transfusion is necessary but should follow or occur alongside **volume expansion** and may carry risks if not managed carefully in a sickle cell patient.
*Broad-spectrum IV antibiotics after blood culture, then fluid resuscitation*
- In cases of **septic shock**, fluid resuscitation for **perfusion** and blood pressure support must occur concurrently with or before antibiotics.
- Delaying fluids while waiting for cultures or antibiotic preparation violates **PALS/Sepsis guidelines** for a patient with clear signs of circulatory collapse.
Question 2: A 16-year-old girl presents to the emergency department with confusion, tachycardia (HR 145/min), and temperature of 40.2°C (104.4°F). Her mother reports she has been taking medication for depression. On examination, she has dilated pupils, flushed dry skin, hyperactive bowel sounds, and sustained ankle clonus with hyperreflexia. Labs show: WBC 14,000/μL, CK 2,500 U/L, creatinine 1.4 mg/dL. She takes fluoxetine and recently started a new medication from another provider. Which therapeutic intervention addresses the most likely diagnosis?
A. Cyproheptadine and benzodiazepines for serotonin syndrome (Correct Answer)
B. Cooling measures and bromocriptine for heat stroke
C. Sodium bicarbonate and activated charcoal for tricyclic overdose
D. Physostigmine for anticholinergic toxicity
E. Dantrolene and supportive care for neuroleptic malignant syndrome
Explanation: ***Cyproheptadine and benzodiazepines for serotonin syndrome***
- The patient exhibits the classic triad of **autonomic instability**, **altered mental status**, and **neuromuscular irritability** (clonus, hyperreflexia) after starting a new medication alongside the SSRI **fluoxetine**.
- **Cyproheptadine**, a serotonin antagonist, is the specific treatment for severe cases, while **benzodiazepines** help control agitation and autonomic hyperactivity.
*Cooling measures and bromocriptine for heat stroke*
- While this patient is hyperthermic, **heat stroke** does not typically present with focal neuromuscular signs like **clonus** or **hyperreflexia**.
- **Bromocriptine** is a dopamine agonist used for Neuroleptic Malignant Syndrome, not environmental heat stroke, which is managed primarily with aggressive external cooling.
*Sodium bicarbonate and activated charcoal for tricyclic overdose*
- **Tricyclic antidepressant (TCA) toxicity** presents with the "3 Cs": **coma, convulsions, and cardiotoxicity** (QRS widening on ECG).
- TCA toxicity results in decreased bowel sounds and **central nervous system depression**, whereas this patient has **hyperactive bowel sounds** and neuromuscular excitation.
*Physostigmine for anticholinergic toxicity*
- Anticholinergic toxicity presents with **dry skin** and **mydriasis**, but it is characterized by **absent bowel sounds** and a lack of clonus or hyperreflexia.
- **Physostigmine** is contraindicated if TCA overdose is suspected and would not address the **hyperreflexic neuromuscular findings** seen in serotonin syndrome.
*Dantrolene and supportive care for neuroleptic malignant syndrome*
- **Neuroleptic Malignant Syndrome (NMS)** is characterized by **"lead-pipe" rigidity** and bradyreflexia, which distinguishes it from the **clonus** seen here.
- NMS typically has a slower onset (days to weeks) compared to the rapid onset of **serotonin syndrome** following a medication change.
Question 3: A 10-month-old infant is brought to the emergency department following a brief resolved unexplained event (BRUE). The parents report the infant suddenly became limp, pale, stopped breathing for about 20 seconds, then spontaneously recovered. The infant is now alert, feeding well, and appears normal. Physical examination is unremarkable. The infant was born at term, has normal development, and this is the first such episode. Evaluate the most appropriate management strategy.
A. Discharge home with apnea monitor and cardiology follow-up
B. Admit for continuous cardiorespiratory monitoring and full diagnostic workup
C. Discharge after 4-hour observation period with parental reassurance and primary care follow-up (Correct Answer)
D. Order ECG, chest X-ray, and pertussis testing before deciding on disposition
E. Initiate empiric treatment for gastroesophageal reflux and admit overnight
Explanation: ***Discharge after 4-hour observation period with parental reassurance and primary care follow-up***
- This infant qualifies as **lower-risk BRUE** because he is >60 days old, was born at term, the event lasted <1 minute, and there were no concerning physical findings or prior episodes.
- For lower-risk patients, management focuses on a **brief observation period (1-4 hours)**, parental reassurance, and ensuring follow-up rather than extensive testing or hospitalization.
*Discharge home with apnea monitor and cardiology follow-up*
- **Home apnea monitors** are not recommended as they have not been proven to reduce the risk of SIDS or capture clinically significant events in lower-risk patients.
- Cardiology follow-up and monitoring are unnecessary interventions for a patient with a completely normal exam and no history of **congenital heart disease**.
*Admit for continuous cardiorespiratory monitoring and full diagnostic workup*
- Admission is strictly reserved for **higher-risk BRUE** cases, such as those with recursive episodes, premature birth (<32 weeks), or those requiring **CPR** by a professional.
- Comprehensive diagnostic workups in lower-risk infants carry a very low yield ( <1%) for identifying serious underlying pathology and increase **healthcare costs**.
*Order ECG, chest X-ray, and pertussis testing before deciding on disposition*
- Extensive testing like **chest X-rays** or **pertussis swabs** is not indicated in an asymptomatic, well-appearing infant without respiratory distress or cough.
- Guidelines suggest that an **ECG** may be considered but is not mandatory; however, broad testing
Question 4: A 7-year-old boy presents to the emergency department with fever to 40°C (104°F), severe sore throat, drooling, and respiratory distress. He is sitting upright in tripod position, appears toxic, and has inspiratory stridor. His immunization status is unknown as the family recently immigrated. Oxygen saturation is 91% on room air. Lateral neck X-ray shows a thumb sign. Which of the following approaches best balances the immediate management priorities?
A. Immediate intubation in the emergency department
B. Obtain blood cultures and start IV antibiotics before airway intervention
C. Direct visualization of the epiglottis with tongue depressor
D. Keep child calm, give oxygen, and arrange controlled intubation in OR with ENT backup (Correct Answer)
E. Nebulized racemic epinephrine and corticosteroids
Explanation: ***Keep child calm, give oxygen, and arrange controlled intubation in OR with ENT backup***
- This child presents with classic **acute epiglottitis**; the priority is maintaining a patent airway while minimizing **agitation**, which can trigger complete airway obstruction.
- Controlled **intubation in the operating room** with a multidisciplinary team (Anesthesiology and ENT) ensures a surgical airway (tracheostomy/cricothyrotomy) can be established if the glottis becomes completely occluded.
*Immediate intubation in the emergency department*
- Attempting intubation in an uncontrolled setting without **surgical backup** is risky due to the high probability of a difficult airway and total laryngeal spasm.
- The child should not be manipulated or placed in a **supine position** in the ED as this can facilitate immediate respiratory arrest.
*Obtain blood cultures and start IV antibiotics before airway intervention*
- While antibiotics are necessary to treat the likely agent, ***Haemophilus influenzae*** **type b**, airway stabilization must always precede diagnostic tests or IV access.
- Painful stimuli like **venipuncture** can cause the child to cry or struggle, leading to acute **laryngospasm** and loss of the airway.
*Direct visualization of the epiglottis with tongue depressor*
- Using a **tongue depressor** is strictly contraindicated because it can cause reflex laryngospasm and **sudden airway occlusion**.
- Physical examination of the oropharynx should only be performed in a **controlled environment** like the operating room where the airway can be immediately secured.
*Nebulized racemic epinephrine and corticosteroids*
- This is the standard treatment for **Croup (laryngotracheobronchitis)**, which presents with a barking cough and "steeple sign," not epiglottitis.
- **Epiglottitis** is a bacterial emergency that does not respond to epinephrine and requires definitive **airway management** and antibiotics.
Question 5: A 4-year-old boy is brought to the emergency department after ingesting an unknown quantity of his grandmother's iron tablets 2 hours ago. He initially vomited twice but now appears stable. Vital signs are: BP 100/65 mmHg, HR 110/min, RR 24/min. Abdominal X-ray shows multiple radiopaque tablets in the stomach. Serum iron level is 425 mcg/dL (normal: 50-120 mcg/dL). Which finding would most strongly indicate the need for immediate chelation therapy with deferoxamine?
A. Serum iron level >400 mcg/dL
B. Presence of radiopaque tablets on X-ray
C. History of vomiting after ingestion
D. Development of metabolic acidosis with altered mental status (Correct Answer)
E. Total iron binding capacity <400 mcg/dL
Explanation: ***Development of metabolic acidosis with altered mental status***
- Immediate **deferoxamine chelation** is indicated for patients with systemic toxicity, such as **anion gap metabolic acidosis**, shock, or **altered mental status**.
- While iron levels guide management, clinical status is the primary driver for intervention because iron shifts rapidly from the **extracellular to intracellular compartment**.
*Serum iron level >400 mcg/dL*
- Although a level >350-500 mcg/dL suggests toxicity, it is not an absolute indication for chelation if the patient remains **asymptomatic**.
- Laboratory values must be correlated with clinical symptoms and the **time since ingestion** to determine the need for chelation.
*Presence of radiopaque tablets on X-ray*
- Visualizing tablets on X-ray confirms ingestion and may indicate a need for **whole bowel irrigation**, but it does not measure **systemic toxicity**.
- **Radiopacity** may also diminish as tablets dissolve, making it an unreliable sole indicator for starting chelation therapy.
*History of vomiting after ingestion*
- Vomiting is common in the **initial gastrointestinal stage** (Stage 1) of iron poisoning due to the direct corrosive effect on the gastric mucosa.
- Isolated GI symptoms can often be managed with supportive care and monitoring unless they progress to **systemic instability**.
*Total iron binding capacity <400 mcg/dl*
- **Total iron binding capacity (TIBC)** was traditionally used to calculate free iron, but it is no longer considered a reliable indicator for chelation therapy.
- Modern management focuses on **serum iron levels** rather than TIBC because the latter can be falsely elevated during acute iron overdose.
