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Zorluk: ZorGastrointestinal and Abdominal Surgery

A 58-year-old woman is evaluated during morning rounds on the surgical ward. She was admitted 48 hours ago for management of a partial small bowel obstruction secondary to adhesions from a prior hysterectomy. Initial management included intravenous fluid resuscitation, bowel rest, and nasogastric tube decompression, which resulted in 600 mL of bilious output over the first day. Over the past 4 hours, the patient reports that her abdominal pain has transitioned from intermittent and crampy to constant and severe. Her temperature is 38.6°C (101.5°F), blood pressure is 98/60 mm Hg, pulse is 122/min, and respirations are 22/min. On physical examination, her abdomen remains distended but now exhibits marked tenderness and involuntary guarding in the periumbilical region. Bowel sounds are absent. Laboratory studies show a leukocyte count of 17,500/mm³ with a 15% bandemia, and a serum lactate of 3.8 mmol/L. Which of the following is the most appropriate next step in management of this patient?

  1. Immediate exploratory laparotomyCevap
  2. B
    Computed tomography of the abdomen and pelvis with intravenous contrast
  3. C
    Continued nasogastric tube decompression and serial abdominal examinations
  4. D
    Administration of oral water-soluble contrast medium
  5. E
    Intravenous broad-spectrum antibiotics and urgent colonoscopy

Cevap

The most appropriate next step is immediate exploratory laparotomy due to the development of clinical signs indicating bowel strangulation and ischemia.
The correct intervention is immediate exploratory laparotomy. This patient initially presented with an uncomplicated adhesive small bowel obstruction (SBO), for which a trial of conservative management (NG tube, IV fluids) is standard. However, her clinical picture has acutely worsened. The transition from crampy, intermittent pain to constant, severe pain is a hallmark symptom of bowel ischemia. Coupled with fever, tachycardia, involuntary guarding (peritonitis), marked leukocytosis, and an elevated serum lactate, the diagnosis is a strangulated SBO. A strangulated obstruction represents a surgical emergency because the blood supply to the affected bowel segment is compromised, leading to necrosis, impending perforation, and septic shock. Definitive management requires immediate operative exploration to relieve the obstruction, assess bowel viability, and resect any frankly necrotic segments.

Adım Adım Çözüm

1
Analyze the patient's initial presentation and management.
The patient originally presented with a partial adhesive small bowel obstruction and was appropriately managed with conservative measures (nasogastric decompression, fluids, bowel rest).
Establishing the baseline is necessary to recognize subsequent clinical deviations.
2
Evaluate the new clinical and laboratory findings.
The patient has developed a fever (38.6°C), tachycardia (122/min), relative hypotension, constant (rather than colicky) pain, peritonitis (guarding), leukocytosis with bandemia, and elevated lactate (3.8 mmol/L).
These specific signs differentiate an uncomplicated obstruction from one complicated by compromised blood flow.
3
Determine the necessary clinical intervention based on the updated diagnosis.
The transition to a strangulated/ischemic bowel mandates abandoning conservative management and proceeding directly to the operating room for an exploratory laparotomy.
Surgical resection of necrotic bowel and relief of the obstruction is required to prevent sepsis, perforation, and death.

Anahtar Kavram

Patients with a small bowel obstruction undergoing conservative management must be closely monitored for signs of strangulation and ischemia (e.g., constant pain, fever, tachycardia, localized peritonitis, leukocytosis, lactic acidosis). The presence of these signs necessitates an immediate shift to surgical exploration (exploratory laparotomy).
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Gastrointestinal and Abdominal Surgery

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