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Zorluk: OrtaSurgical and Procedural Interventions

A 52-year-old woman is brought to the emergency department due to sudden-onset, severe abdominal pain and bilious vomiting that started 12 hours ago. She reports no bowel movements or flatus during this time. Her medical history is unremarkable, and she has had no prior abdominal surgeries. Her temperature is 37.6∘C37.6^\circ\text{C} (99.7∘F99.7^\circ\text{F}), blood pressure is 115/75 mmHg115/75\text{ mmHg}, and heart rate is 110/min110/\text{min}. Physical examination reveals an asymmetric, tympanic, and markedly distended abdomen. There is diffuse tenderness to palpation but no guarding or rigidity. Laboratory results are notable for a leukocyte count of 12,500/mm312,500/\text{mm}^3 and a normal serum lactate level. A CT scan of the abdomen with intravenous contrast demonstrates a severely dilated cecum measuring 10.5 cm10.5\text{ cm} in diameter displaced into the left upper quadrant, with a "whirl pattern" of the mesenteric vessels and collapsed distal bowel. Which of the following is the most appropriate next step in management?

  1. Urgent exploratory laparotomyCevap
  2. B
    Endoscopic decompression via colonoscopy
  3. C
    Intravenous administration of neostigmine
  4. D
    Nasogastric tube placement and serial abdominal examinations
  5. E
    CT angiography of the mesenteric vessels

Cevap

Urgent exploratory laparotomy is required for the treatment of a cecal volvulus to prevent bowel ischemia and perforation.
The clinical presentation and CT findings (a markedly dilated cecum displaced to the left upper quadrant and a 'whirl pattern' of the mesentery) are diagnostic of a cecal volvulus. Because a cecal volvulus represents a closed-loop mechanical obstruction involving a twist of the ascending colon, it carries an exceptionally high risk of rapid vascular compromise, gangrene, and perforation. The standard of care is urgent surgical intervention, typically an exploratory laparotomy with right colectomy or cecopexy. Non-operative management is associated with high failure rates and unacceptable morbidity in these patients.

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1
Analyze the clinical presentation and radiographic findings.
The patient presents with signs of an acute mechanical bowel obstruction. The CT scan showing a dilated cecum in the left upper quadrant with a mesenteric 'whirl pattern' is diagnostic of a cecal volvulus.
Accurate interpretation of imaging prevents misdiagnosing the condition as a sigmoid volvulus or an adynamic ileus.
2
Determine the pathophysiological risk of the diagnosed condition.
A cecal volvulus is a closed-loop obstruction involving a twist of the ascending colon and terminal ileum, carrying a high risk of vascular compromise and perforation.
Understanding the high risk of rapid progression to gangrene dictates the urgency and modality of the intervention.
3
Select the most appropriate evidence-based intervention.
Urgent exploratory laparotomy is chosen as the definitive treatment.
Unlike sigmoid volvulus, cecal volvulus cannot be safely or effectively managed with endoscopic decompression, making immediate surgery the standard of care.

Anahtar Kavram

Cecal volvulus is a closed-loop surgical emergency that requires immediate operative intervention (exploratory laparotomy), in contrast to sigmoid volvulus, which can often be initially managed with endoscopic decompression.
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Surgical and Procedural Interventions

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