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Zorluk: OrtaGastrointestinal and Abdominal Surgery

During morning rounds, a surgical team evaluates a 68-year-old male inpatient whose clinical status has acutely worsened. He was admitted two days prior for management of an adhesive small bowel obstruction. Initial treatment consisted of intravenous fluid resuscitation, bowel rest, and placement of a nasogastric tube for gastric decompression. Over the last three hours, the patient reports that his previously intermittent, crampy abdominal pain has become constant and severe. His temperature is 38.9°C (102.0°F), blood pressure is 102/64 mmHg, pulse is 118/min, and respirations are 22/min. Physical examination reveals a distended abdomen with marked focal tenderness, involuntary guarding, and rebound tenderness in the periumbilical region. Laboratory studies show a leukocyte count of 16,500/mm³ and a serum lactate level of 3.4 mmol/L. Which of the following is the most appropriate next step in the management of this patient?

  1. Transfer to the operating room for surgical explorationCevap
  2. B
    Continuation of nasogastric suctioning and serial abdominal examinations
  3. C
    Administration of a water-soluble contrast agent via the nasogastric tube
  4. D
    Cross-sectional imaging of the abdomen and pelvis with intravenous contrast
  5. E
    Initiation of broad-spectrum intravenous antibiotics and continued observation

Cevap

Transfer to the operating room for surgical exploration
The correct answer is to transfer the patient to the operating room for surgical exploration. This patient initially presented with an uncomplicated adhesive small bowel obstruction (SBO) and was appropriately managed with conservative measures (bowel rest, intravenous fluids, nasogastric decompression). However, his clinical picture has deteriorated, characterized by a transition from colicky to constant severe pain, fever, tachycardia, focal peritonitis (guarding and rebound tenderness), marked leukocytosis, and an elevated serum lactate level. This constellation of findings indicates that the obstruction has become complicated by bowel ischemia or strangulation (i.e., compromised blood flow to the affected bowel segment). Once signs of strangulation or peritonitis develop, conservative management has failed, and immediate exploratory laparotomy is required to relieve the obstruction and resect any necrotic bowel.

Adım Adım Çözüm

1
Analyze the patient's initial presentation and current clinical trajectory.
The patient initially had an uncomplicated adhesive small bowel obstruction (SBO) but has now developed severe, constant pain accompanied by fever, tachycardia, and localized peritonitis.
Tracking the evolution of SBO symptoms differentiates between a resolving obstruction and one progressing to ischemia/strangulation.
2
Interpret the laboratory findings in the context of the physical examination.
Leukocytosis (16,500/mm³) and elevated lactate (3.4 mmol/L) confirm systemic inflammation and tissue hypoperfusion/ischemia.
Metabolic acidosis (elevated lactate) and significant leukocytosis in the setting of SBO are highly specific 'red flag' markers for bowel ischemia.
3
Determine the definitive management for a strangulated small bowel obstruction.
Urgent surgical intervention is required to resect ischemic or necrotic bowel and relieve the obstruction.
Once signs of strangulation (peritonitis, systemic toxicity, lactic acidosis) develop, conservative medical management is no longer safe or effective.

Anahtar Kavram

Patients with a small bowel obstruction who develop signs of strangulation (fever, tachycardia, constant pain, focal peritonitis, leukocytosis, and lactic acidosis) require immediate surgical exploration rather than continued conservative management.
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Gastrointestinal and Abdominal Surgery

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