MCQ: Diarrhea | Shock

An 8-year-old girl is brought to the emergency department with profuse watery diarrhea for 5 days, persistent vomiting, and progressive lethargy. She has a history of chronic abdominal distension, poor weight gain, and intermittent loose stools for the past year. On examination, she appears dehydrated, tachycardic, and hypotensive. She has pedal edema and muscle wasting.

Laboratory investigations reveal:

  • Serum sodium: 124 mEq/L

  • Serum potassium: 2.6 mEq/L

  • Serum bicarbonate: 14 mEq/L

  • Serum albumin: 2.2 g/dL

  • Tissue transglutaminase (tTG-IgA): markedly elevated

Which of the following is the most appropriate immediate management step in this patient?

A. Aggressive intravenous fluid resuscitation with correction of electrolyte imbalance
B. Initiation of gluten-free diet alone
C. Intravenous corticosteroids and parenteral nutrition
D. Oral zinc supplementation and probiotics
E. Rapid correction of hyponatremia with hypertonic saline

Correct answer & Explanation

The correct answer is A. Aggressive intravenous fluid resuscitation with correction of electrolyte imbalance.

Discussion: celiac crisis (celiac disease)

This child has features of a celiac crisis, a rare but life-threatening presentation of untreated or poorly controlled celiac disease. Celiac crisis is characterized by severe diarrhea, vomiting, dehydration, profound electrolyte disturbances, metabolic acidosis, hypoalbuminemia, and hemodynamic instability. The markedly elevated tissue transglutaminase IgA (tTG-IgA) level, together with the history of chronic abdominal distension, poor weight gain, and intermittent diarrhea, strongly supports the diagnosis of underlying celiac disease.

In the acute setting, the patient’s hypotension, tachycardia, severe dehydration, hyponatremia (124 mEq/L), hypokalemia (2.6 mEq/L), metabolic acidosis (bicarbonate 14 mEq/L), and hypoalbuminemia (2.2 g/dL) indicate a medical emergency. Therefore, the priority is stabilization with intravenous fluids and careful correction of electrolyte abnormalities. Once the patient is hemodynamically stable, a gluten-free diet can be initiated and long-term nutritional rehabilitation planned.

Why the Other Options Are Incorrect

B. Initiation of gluten-free diet alone
Although a gluten-free diet is the definitive treatment for celiac disease, it does not address the immediate life-threatening complications of dehydration, shock, and electrolyte imbalance. Stabilization must precede dietary therapy.

C. Intravenous corticosteroids and parenteral nutrition
Corticosteroids may occasionally be considered in severe refractory cases of celiac crisis, but they are not the first-line intervention. Initial management focuses on fluid resuscitation and correction of metabolic abnormalities. Parenteral nutrition is reserved for selected patients who cannot tolerate enteral feeding.

D. Oral zinc supplementation and probiotics
These measures may provide supportive benefits in some diarrheal illnesses but are inadequate for a critically ill child with severe dehydration, electrolyte disturbances, and shock.

E. Rapid correction of hyponatremia with hypertonic saline
Hypertonic saline is indicated only for severe symptomatic hyponatremia with manifestations such as seizures or impending cerebral herniation. Rapid correction of sodium can lead to osmotic demyelination syndrome and should be avoided. The hyponatremia in this patient is best corrected gradually during fluid and electrolyte replacement.

Key Learning Point

Celiac crisis is a pediatric emergency characterized by severe diarrhea, dehydration, metabolic acidosis, electrolyte disturbances, and hypoalbuminemia in a patient with celiac disease. The immediate management priority is aggressive fluid resuscitation and correction of electrolyte abnormalities before initiating a gluten-free diet and other definitive therapies.

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