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Difficulty: EasyGastroenterology and Hepatology

A 35-year-old woman presents to the clinic with a 3-day history of watery diarrhea, mild abdominal cramping, and nausea. She reports 4 to 5 loose bowel movements daily but denies fever, bloody stools, recent travel, or sick contacts. Her only medication is a daily oral contraceptive pill. Temperature is 37.0°C (98.6°F), blood pressure is 118/76 mmHg, and pulse is 82/min. The abdomen is soft and non-distended, with mild diffuse tenderness but no guarding or rebound. Bowel sounds are hyperactive. Which of the following is the most appropriate next step in management?

  1. Recommendation for oral rehydration therapyAnswer
  2. B
    Empirical treatment with oral ciprofloxacin
  3. C
    Surgical consultation for abdominal exploration
  4. D
    Measurement of arterial blood gas
  5. E
    Measurement of serum thyroid-stimulating hormone

Answer

The most appropriate next step is recommendation for oral rehydration therapy.
The correct answer is recommendation for oral rehydration therapy because this patient presents with uncomplicated acute watery diarrhea. In the absence of warning signs such as high fever, bloody stools, severe abdominal pain, or signs of volume depletion, the most likely etiology is a self-limiting viral infection. The mainstay of treatment is supportive care to maintain hydration.

Step-by-Step Solution

1
Evaluate the duration and characteristics of the patient's diarrhea.
The patient has acute (< 14 days), watery diarrhea without warning signs such as fever, hematochezia, or severe pain.
Categorizing the diarrhea helps differentiate between self-limiting viral etiologies and more severe bacterial or parasitic infections.
2
Assess the patient's hemodynamic status and physical examination findings.
Vital signs are stable and the abdominal examination is benign, showing only mild tenderness without peritonitis.
This confirms the absence of severe volume depletion, sepsis, or an acute surgical abdomen.
3
Determine the most appropriate initial management based on clinical findings.
Supportive care with oral rehydration therapy is selected.
Uncomplicated acute watery diarrhea is typically viral and resolves spontaneously; unnecessary diagnostics and empirical antibiotics should be avoided.

Key Concept

Management of acute uncomplicated gastroenteritis centers on supportive care and oral rehydration therapy, avoiding unnecessary laboratory testing and broad-spectrum antibiotics.
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Topics

Gastroenterology and Hepatology

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