A 1.5-year-old girl is admitted to the pediatric ward with cough, fever, and mild hypoxia. At the time of admission, a left upper lobe consolidation is seen on CXR, and Staphylococcus aureus is isolated from blood culture within 24 hours. Suddenly, the child's condition acutely worsens over a few minutes, with marked increases in work of breathing, oxygen requirement, and hypotension. On examination, decreased air entry is noted in the left hemithorax, and heart sounds are more audible on the right side of the chest compared to the left. What is the possible reason for this deterioration?
Q122
Which of the following is the recommended treatment for iron poisoning in a 4-year-old child?
Q123
A 9-month-old child has been presented in the emergency department with a complaint of seizure that occurred one hour prior. On examination, the child is alert, and laboratory investigations reveal a serum calcium level of 5 mg%. What is the next line of treatment for this child?
Q124
In the management of prolonged intussusception with signs of shock, which of the following interventions is least appropriate?
Q125
A 4-year-old child is brought to the emergency department with severe dehydration due to diarrhea. What is the initial management for severe dehydration?
Pediatric Critical Care Indian Medical PG Practice Questions and MCQs
Question 121: A 1.5-year-old girl is admitted to the pediatric ward with cough, fever, and mild hypoxia. At the time of admission, a left upper lobe consolidation is seen on CXR, and Staphylococcus aureus is isolated from blood culture within 24 hours. Suddenly, the child's condition acutely worsens over a few minutes, with marked increases in work of breathing, oxygen requirement, and hypotension. On examination, decreased air entry is noted in the left hemithorax, and heart sounds are more audible on the right side of the chest compared to the left. What is the possible reason for this deterioration?
A. Tension pneumothorax (Correct Answer)
B. Empyema
C. Acute Respiratory Distress Syndrome (ARDS)
D. Pleural effusion
Explanation: ***Tension pneumothorax***
- The sudden deterioration with **marked increases in work of breathing**, oxygen requirement, and **hypotension** strongly suggests a tension pneumothorax.
- **Decreased air entry** on the affected side and **shifted heart sounds** (more audible on the right in this case, indicating mediastinal shift away from the left-sided pneumothorax) are classic signs of tension pneumothorax.
- Staphylococcus aureus pneumonia commonly causes **pneumatoceles** (thin-walled air-filled cysts) which can rupture, leading to pneumothorax - a well-recognized complication in pediatric staphylococcal pneumonia.
*Empyema*
- Empyema is the accumulation of **pus in the pleural space** and would cause persistent fever and worsening respiratory status, but not typically such a rapid, acute, and dramatic deterioration with hemodynamic instability over minutes.
- While it can cause decreased breath sounds and dullness to percussion, it wouldn't typically cause acute mediastinal shift and hypotension in minutes like a tension pneumothorax.
*Acute Respiratory Distress Syndrome (ARDS)*
- ARDS is characterized by **bilateral pulmonary infiltrates** and severe hypoxemia, which would cause significant respiratory distress, but its onset is typically less acute and sudden in a matter of minutes.
- While ARDS involves worsening respiratory status, it doesn't typically present with immediate, dramatic **mediastinal shift** and acute circulatory collapse as seen here.
*Pleural effusion*
- A pleural effusion is an accumulation of fluid in the pleural space and would cause **decreased breath sounds** and dullness to percussion on the affected side, and it can cause respiratory distress.
- Although it can cause some mediastinal shift if it's large, it would not typically cause such an **acute and rapid hemodynamic collapse** and dramatic deterioration over minutes, as described.
Question 122: Which of the following is the recommended treatment for iron poisoning in a 4-year-old child?
A. Blood transfusion
B. Stomach lavage
C. Observation and supportive care
D. Deferoxamine IV at a dose of 15 mg/kg/hour (Correct Answer)
Explanation: ***Deferoxamine IV at a dose of 15 mg/kg/hour***
- **Deferoxamine** is a chelating agent specifically used to bind free iron, forming a complex that can be excreted renally.
- An intravenous infusion at 15 mg/kg/hour is the recommended dose for severe iron poisoning, particularly when serum iron levels are high or symptoms indicate significant toxicity.
*Stomach lavage*
- **Stomach lavage** is generally not recommended for iron poisoning due to the risk of pushing iron tablets further into the intestine, potential for perforation, and limited efficacy in removing large, unabsorbed iron tablets.
- Iron tablets are often **large** and **poorly soluble**, making lavage ineffective for complete removal.
*Blood transfusion*
- **Blood transfusion** is not a primary treatment for iron poisoning because iron toxicity is due to free iron in the body, not a deficiency that would be corrected by transfused blood.
- It would only be considered in cases of severe anemia or significant blood loss, which are not direct treatments for iron overload.
*Observation and supportive care*
- While supportive care is crucial in managing complications of iron poisoning, **observation alone is insufficient** for moderate to severe cases of iron poisoning.
- Significant iron overdose requires active intervention to prevent systemic toxicity, organ damage, and potentially fatal outcomes.
Question 123: A 9-month-old child has been presented in the emergency department with a complaint of seizure that occurred one hour prior. On examination, the child is alert, and laboratory investigations reveal a serum calcium level of 5 mg%. What is the next line of treatment for this child?
A. Calcium in a dose of 2 ml/kg (Correct Answer)
B. Diazepam
C. Phenytoin
D. Calcium in a dose of 1 ml/kg
Explanation: ***Calcium in a dose of 2 ml/kg***
- The child presents with a seizure and **hypocalcemia** (serum calcium 5 mg%), indicating **hypocalcemic seizure**.
- **Intravenous calcium gluconate** at a dose of 2 ml/kg (10% solution) is the immediate treatment to rapidly correct hypocalcemia and stop ongoing or recurrent seizures.
*Phenytoin*
- **Phenytoin** is an antiepileptic drug typically used for treating **generalized tonic-clonic seizures** or partial seizures.
- It is not indicated as the first-line treatment for seizures caused by an **electrolyte imbalance** like hypocalcemia.
*Diazepam*
- **Diazepam** is a benzodiazepine used to treat **acute seizures** or status epilepticus due to its rapid onset and ability to suppress seizure activity.
- While it could terminate an ongoing seizure, it does not address the underlying **hypocalcemia**, which is the cause of the seizure in this case.
*Calcium in a dose of 1 ml/kg*
- Although **calcium** is the correct treatment, the standard recommended initial dose for acute symptomatic hypocalcemia, especially with seizures in children, is **2 ml/kg** of 10% calcium gluconate.
- A dose of **1 ml/kg** might be insufficient to rapidly correct severe hypocalcemia and control seizures effectively.
Question 124: In the management of prolonged intussusception with signs of shock, which of the following interventions is least appropriate?
A. Nasogastric tube
B. Barium enema (Correct Answer)
C. IV fluid
D. Give O2
Explanation: ***Barium enema***
- A barium enema is used for the diagnosis and *non-operative reduction* of intussusception in hemodynamically stable children.
- In a patient with **prolonged intussusception** and **signs of shock**, there is an increased risk of **bowel ischemia** or **perforation**, making a barium enema potentially dangerous and inappropriate.
*IV fluid*
- **Intravenous fluids** are crucial to correct **hypovolemia** and **electrolyte imbalances** resulting from poor oral intake, vomiting, and third-spacing associated with intussusception and shock.
- They are vital for stabilizing the patient's **hemodynamics** prior to any definitive intervention.
*Give O2*
- Administering **oxygen** helps address **tissue hypoxia** that can occur in patients in shock due to poor perfusion.
- It supports aerobic metabolism and may reduce the burden on the cardiovascular system.
*Nasogastric tube*
- A **nasogastric tube** is inserted to **decompress the stomach** and *prevent aspiration* in patients with intestinal obstruction and vomiting.
- It also helps reduce further abdominal distension, making the patient more comfortable and potentially improving ventilation.
Question 125: A 4-year-old child is brought to the emergency department with severe dehydration due to diarrhea. What is the initial management for severe dehydration?
A. Oral rehydration therapy
B. Intravenous fluids (Correct Answer)
C. Antidiarrheal medication
D. Antibiotics
Explanation: ***Intravenous fluids***
- For **severe dehydration**, rapid correction of fluid and electrolyte imbalances is critical, and **intravenous fluids** (normal saline or Ringer's lactate) are the **first-line treatment**.
- As per **WHO and IAP guidelines**, children with severe dehydration require **IV fluid resuscitation** at 100 mL/kg over 3-6 hours (or 30 mL/kg bolus initially).
- Signs of severe dehydration include **lethargy, sunken eyes, absent tears, very dry mucous membranes, poor skin turgor**, and inability to drink.
- IV route ensures **rapid intravascular volume expansion** when oral intake is compromised or inadequate.
*Oral rehydration therapy*
- **ORT** is the treatment of choice for **mild to moderate dehydration only** (Plan B as per WHO).
- In severe dehydration, children often have **altered consciousness, persistent vomiting**, or **circulatory compromise**, making oral intake ineffective or impossible.
- ORT can be initiated once the child is alert and able to drink after initial IV resuscitation.
*Antidiarrheal medication*
- **Not recommended** in children with acute diarrhea, especially under 5 years.
- Medications like loperamide can cause **ileus, drowsiness**, and may worsen outcomes.
- They do **not address fluid and electrolyte deficits**, which is the immediate life-threatening concern.
*Antibiotics*
- Only indicated for **specific bacterial causes** (e.g., cholera, shigellosis with blood in stool, or proven invasive bacterial infection).
- **Not part of initial management** for severe dehydration.
- Indiscriminate use contributes to **antibiotic resistance** and delays critical rehydration.
