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Zorluk: ZorGastrointestinal and Abdominal Surgery

A physician is evaluating a 6868-year-old man in the hospital who was admitted 3636 hours ago for crampy abdominal pain, obstipation, and vomiting. He has a history of an open appendectomy 2020 years ago. On admission, plain abdominal radiographs demonstrated dilated loops of small intestine with multiple air-fluid levels and a paucity of colonic gas. He was initially managed with intravenous fluid resuscitation, bowel rest, and nasogastric tube decompression. Over the last two hours, the patient reports that his abdominal pain has transitioned from intermittent cramping to a severe, constant ache. His temperature is 38.6∘C38.6^\circ\text{C} (101.5∘F101.5^\circ\text{F}), blood pressure is 96/60 mmHg96/60\text{ mmHg}, pulse is 118/min118\text{/min}, and respiratory rate is 22/min22\text{/min}. Physical examination reveals a markedly distended abdomen with involuntary guarding and rebound tenderness in the periumbilical region. Laboratory studies show a leukocyte count of 18,500/mm318,500/\text{mm}^3 with 12%12\% bands, and a serum lactate level of 4.2 mmol/L4.2\text{ mmol/L}. Which of the following is the most appropriate next step in the management of this patient?

  1. Urgent exploratory laparotomyCevap
  2. B
    Computed tomography scan of the abdomen and pelvis
  3. C
    Administration of oral water-soluble contrast
  4. D
    Intravenous broad-spectrum antibiotics and continued observation
  5. E
    Colonoscopic decompression

Cevap

Urgent exploratory laparotomy
The correct answer is urgent exploratory laparotomy. The patient initially presented with an uncomplicated adhesive small bowel obstruction, appropriately managed with conservative measures. However, his clinical picture has evolved to include severe, constant pain, fever, tachycardia, hypotension, marked leukocytosis, elevated serum lactate, and peritonitis (guarding, rebound tenderness). This constellation of findings indicates a complicated or strangulated small bowel obstruction, where a segment of the bowel has lost its blood supply, leading to ischemia and necrosis. Once signs of strangulation or peritonitis are present, the standard of care dictates immediate abandonment of conservative management in favor of urgent surgical exploration to relieve the obstruction and resect any non-viable bowel.

Adım Adım Çözüm

1
Identify the initial diagnosis.
The patient presented with a classical adhesive small bowel obstruction (SBO) secondary to prior abdominal surgery.
Initial symptoms of colicky pain, vomiting, and obstipation with characteristic X-ray findings confirm uncomplicated SBO.
2
Analyze the change in the patient's clinical status.
The pain has become constant and severe, accompanied by fever, hypotension, tachycardia, leukocytosis with a left shift, and elevated lactate.
These are the hallmark signs of bowel ischemia and tissue hypoperfusion.
3
Correlate with physical exam findings.
The presence of involuntary guarding and rebound tenderness indicates peritonitis.
Peritonitis in the setting of SBO suggests progression to a closed-loop obstruction, bowel strangulation, and impending or actual perforation.
4
Determine the definitive management.
The patient requires an urgent exploratory laparotomy.
When clinical signs of strangulation or peritonitis develop, conservative management must be abandoned immediately in favor of surgical exploration to resect non-viable bowel.

Anahtar Kavram

Management of Complicated Small Bowel Obstruction
Tahmini Süre:1m 30s
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Konular

Gastrointestinal and Abdominal Surgery

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