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Zorluk: OrtaGastrointestinal and Abdominal Surgery

A 38-year-old female presents to the emergency department reporting a 6-hour history of acute, unrelenting, and severe mid-abdominal pain that radiates to her back. She has had three episodes of bilious emesis. Her surgical history is notable for a laparoscopic Roux-en-Y gastric bypass performed three years ago, after which she successfully lost 50 kg (110 lbs). On physical examination, she appears in acute distress. Her temperature is 38.1°C (100.6°F), heart rate is 122/min, blood pressure is 105/65 mm Hg, and respiratory rate is 22/min. The abdomen is moderately distended and demonstrates severe focal tenderness in the periumbilical region, with marked involuntary guarding and rebound tenderness. Laboratory studies reveal a white blood cell count of 17,200/mm³ and an arterial lactate of 4.1 mmol/L. An upright abdominal radiograph is largely non-specific, demonstrating a few minimally dilated loops of small intestine without free air. After initiating intravenous fluid resuscitation and broad-spectrum antibiotics, which of the following is the most appropriate next step in management?

  1. A
    Nasogastric tube placement and serial clinical examinations
  2. B
    Upper gastrointestinal series with water-soluble contrast
  3. Urgent surgical explorationCevap
  4. D
    Computed tomography of the abdomen with oral and intravenous contrast
  5. E
    Upper gastrointestinal endoscopy

Cevap

The correct answer is urgent surgical exploration.
The correct answer is urgent surgical exploration. This patient exhibits a classic presentation of a closed-loop small bowel obstruction secondary to an internal hernia, a well-known complication following a Roux-en-Y gastric bypass. The defect in the mesentery allows the small bowel to herniate and become incarcerated. Symptoms include acute, severe pain and bilious emesis. Plain radiographs are frequently non-specific in closed-loop obstructions. The critical findings in this patient are peritonitis (involuntary guarding, rebound tenderness), fever, marked leukocytosis, and elevated lactate, which indicate that bowel strangulation and ischemia have already occurred. In any patient with an acute mechanical bowel obstruction who develops peritoneal signs, conservative management and diagnostic delays are contraindicated. Emergent surgical exploration (laparoscopy or laparotomy) is required immediately to reduce the hernia, resect any necrotic bowel, and prevent overwhelming sepsis and death.

Adım Adım Çözüm

1
Analyze the patient's surgical history and presenting symptoms.
The history of Roux-en-Y gastric bypass combined with acute abdominal pain and bilious emesis raises high suspicion for an internal hernia causing a closed-loop small bowel obstruction.
Altered anatomy from bariatric surgery creates mesenteric defects that are classic sites for internal herniation.
2
Evaluate the physical examination and laboratory findings for complications.
The presence of fever, tachycardia, involuntary guarding, rebound tenderness, marked leukocytosis, and an elevated lactate level all point toward bowel strangulation and ischemia.
Differentiating between uncomplicated obstruction and strangulated/ischemic obstruction determines the urgency of intervention.
3
Select the most appropriate management based on the clinical status.
Because the patient exhibits clear peritoneal signs and evidence of bowel ischemia, immediate surgical exploration is mandated over further diagnostic testing.
Delaying surgical intervention in the setting of ischemic bowel significantly increases the risk of transmural necrosis, perforation, and mortality.

Anahtar Kavram

Patients presenting with signs of a complicated small bowel obstruction (peritonitis, lactic acidosis, fever), including closed-loop obstructions from internal hernias post-gastric bypass, require immediate surgical exploration.
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Gastrointestinal and Abdominal Surgery

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