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Difficulty: EasyGastrointestinal and Abdominal Surgery

A 58-year-old man presents to the emergency department with 3 days of progressive left lower quadrant abdominal pain and a subjective fever. His temperature is 38.1°C (100.6°F), blood pressure is 130/80 mm Hg, and heart rate is 88/min. Abdominal examination reveals localized tenderness in the left lower quadrant but no rigidity, rebound, or guarding. Laboratory studies show a leukocyte count of 13,000/mm³. Arrange the following management steps in the most appropriate chronological order for this patient.

  1. 1Obtain a computed tomography (CT) scan of the abdomen and pelvis with contrast.
  2. 2Initiate a clear liquid diet and a course of oral antibiotics.
  3. 3Discharge the patient home with explicit return precautions.
  4. 4Schedule a colonoscopy for 6 to 8 weeks later.

Answer

The correct sequence is to first obtain a CT scan to confirm uncomplicated diverticulitis, then initiate medical management with antibiotics and a clear liquid diet, followed by safe discharge home, and finally scheduling a follow-up colonoscopy in 6 to 8 weeks.
The standard of care for suspected acute diverticulitis starts with diagnostic confirmation via CT scan. Once confirmed as uncomplicated, the patient is treated medically with bowel rest (liquid diet) and antibiotics. Because the patient is stable and uncomplicated, they can be safely discharged. Finally, a follow-up colonoscopy is mandatory 6-8 weeks later to rule out colorectal cancer once the risk of iatrogenic perforation has passed.

Step-by-Step Solution

1
Obtain a CT scan of the abdomen and pelvis with contrast.
Confirms the diagnosis of acute uncomplicated diverticulitis.
Imaging is required immediately to confirm the suspected diagnosis and exclude surgical emergencies like a perforated viscus or abscess.
2
Initiate a clear liquid diet and oral antibiotics.
Treats the localized infection and provides temporary bowel rest.
This is the standard of care for a hemodynamically stable patient with confirmed uncomplicated diverticulitis who does not have systemic toxicity.
3
Discharge the patient home.
Allows for safe outpatient management.
Patients who are stable, tolerating oral intake, and have adequate support networks do not require hospital admission for uncomplicated diverticulitis.
4
Schedule a colonoscopy in 6 to 8 weeks.
Evaluates the colonic mucosa for underlying malignancy.
A colonoscopy is required after the acute inflammation has resolved to exclude colorectal cancer, as the inflammatory changes on CT can mask an underlying tumor. It is delayed to minimize the risk of iatrogenic perforation.

Key Concept

Sequential management of acute uncomplicated diverticulitis
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Topics

Gastrointestinal and Abdominal Surgery

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