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Zorluk: KolayGastrointestinal and Abdominal Surgery

A male patient, aged 54, is brought to the surgical evaluation unit due to intense, unremitting abdominal pain and bilious vomiting that started 12 hours prior. His past medical history is notable for an open appendectomy performed two decades ago. Current vital signs include a temperature of 39.1°C (102.4°F), heart rate of 124/min, and blood pressure of 92/58 mm Hg. The abdominal examination reveals marked distension, absent bowel sounds, involuntary guarding, and diffuse rebound tenderness. Laboratory assessment is significant for a leukocyte count of 19,500/mm³ and a serum lactate of 4.5 mmol/L. Upright radiographic imaging of the abdomen demonstrates multiple dilated small intestinal loops with air-fluid levels and an absence of distal colonic gas. Which of the following is the most appropriate next step in management?

  1. Exploratory laparotomyCevap
  2. B
    Nasogastric intubation and intravenous fluid resuscitation
  3. C
    Abdominal computed tomography with intravenous contrast
  4. D
    Intravenous antibiotics and ward observation
  5. E
    Barium enema examination

Cevap

The most appropriate next step in management is to perform an exploratory laparotomy.
The correct response is exploratory laparotomy. This patient presents with classic signs of a small bowel obstruction (SBO) complicated by bowel ischemia and peritonitis, often referred to as a strangulated SBO. The diagnosis of an SBO is established by the history of prior abdominal surgery, colicky-to-unremitting pain, bilious emesis, and abdominal X-ray findings. The crucial clinical determination is whether the obstruction is uncomplicated or strangulated. The presence of high fever, tachycardia, hypotension, a rigid abdomen with rebound tenderness, significant leukocytosis, and elevated serum lactate all point to compromised intestinal blood flow, ischemia, and impending or actual perforation. The definitive and life-saving treatment for a strangulated small bowel obstruction is immediate operative exploration to resect any necrotic bowel and relieve the source of the obstruction. Delaying surgery for further imaging or prolonged observation significantly increases mortality.

Adım Adım Çözüm

1
Identify the primary diagnosis based on the history and initial imaging.
The patient has a small bowel obstruction (SBO), supported by prior abdominal surgery, bilious vomiting, distension, and radiographs showing dilated small bowel loops with air-fluid levels.
Recognizing the underlying mechanical issue is the first step in abdominal pain evaluation.
2
Assess for complications indicating ischemia, necrosis, or perforation.
The patient exhibits severe unremitting pain, high fever (39.1°C), tachycardia, hypotension, involuntary guarding, rebound tenderness, significant leukocytosis, and lactic acidosis.
These findings reliably distinguish an uncomplicated obstruction from a strangulated obstruction with bowel ischemia.
3
Determine the definitive treatment based on the presence of these complications.
Because signs of strangulation and peritonitis are present, conservative management must be bypassed in favor of emergent surgical intervention.
Delaying surgery in a strangulated bowel obstruction significantly increases morbidity and mortality due to spreading necrosis and sepsis.

Anahtar Kavram

Patients with a small bowel obstruction who develop signs of strangulation or bowel ischemia (e.g., fever, tachycardia, hemodynamic instability, severe localized pain, peritonitis, leukocytosis, metabolic acidosis) require emergent surgical exploration.
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Konular

Gastrointestinal and Abdominal Surgery

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