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Difficulty: EasyGastrointestinal and Abdominal Surgery

A 50-year-old male seeks medical attention at the emergency department after two days of progressively worsening, crampy periumbilical pain, progressive abdominal distension, and an inability to pass flatus or stool. He reports multiple episodes of bilious emesis. His surgical history is notable for an exploratory laparotomy following blunt abdominal trauma a decade ago. Vital signs show a heart rate of 98/min, blood pressure of 135/85 mm Hg, and respiratory rate of 16/min. The patient is afebrile. Abdominal examination demonstrates marked distension, hyperactive high-pitched bowel sounds, and generalized tympany without rigidity or rebound tenderness. Arrange the following management steps in the most appropriate chronological sequence for this patient.

  1. 1Administer intravenous isotonic crystalloids and correct any electrolyte deficits.
  2. 2Place a nasogastric tube to decompress the gastrointestinal tract.
  3. 3Perform a computed tomography (CT) scan of the abdomen and pelvis.
  4. 4Admit the patient to the surgical ward for serial clinical examinations.

Answer

The correct sequence is to first administer intravenous fluids, followed by placing a nasogastric tube, obtaining a CT scan of the abdomen, and finally admitting the patient for serial clinical examinations.
The standard sequence for managing an uncomplicated small bowel obstruction begins with addressing the physiological deficits caused by the condition. Intravenous fluid resuscitation and electrolyte correction take absolute priority. Following stabilization, a nasogastric tube is placed to decompress the stomach and prevent aspiration. Once the patient is stabilized and decompressed, a CT scan is utilized to locate the transition point and rule out strangulation. Finally, in the absence of peritonitis or complicated obstruction, the patient is admitted for a trial of conservative management.

Step-by-Step Solution

1
Assess the patient's hemodynamic status and begin resuscitation.
Intravenous fluids and electrolyte repletion are started.
Third-spacing of fluids into the bowel lumen and frequent vomiting cause significant volume depletion, making resuscitation the immediate priority.
2
Relieve gastrointestinal pressure.
A nasogastric tube is placed.
Gastric decompression reduces the risk of pulmonary aspiration and alleviates patient discomfort from severe distension.
3
Confirm the diagnosis and evaluate for surgical emergencies.
A CT scan of the abdomen and pelvis is obtained.
Imaging is required to identify the mechanical transition point and rule out bowel ischemia or closed-loop obstruction before committing to a nonoperative plan.
4
Determine the definitive management strategy.
The patient is admitted for conservative management.
The absence of peritonitis, fever, or hemodynamic instability allows for a trial of nonoperative care with serial abdominal examinations.

Key Concept

The initial management of uncomplicated small bowel obstruction requires sequential prioritization: ABCs and fluid resuscitation, gastrointestinal decompression, diagnostic confirmation via CT imaging, and subsequently, a trial of conservative management.
Estimated Time:1m 0s
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Topics

Gastrointestinal and Abdominal Surgery

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