Examkin

Question

Difficulty: Very hardGastrointestinal and Abdominal Surgery

Match each clinical presentation of a large bowel emergency with its most appropriate next step in management.

  • A 32-year-old man with fulminant ulcerative colitis and toxic megacolon becomes hypotensive; imaging shows impending perforation.Subtotal colectomy with end ileostomy
  • A 71-year-old woman presents with acute abdominal pain; imaging reveals a massively dilated cecum. She is hemodynamically stable without peritonitis, and laparotomy shows viable bowel.Right hemicolectomy with primary ileocolic anastomosis
  • A 78-year-old man presents with progressive abdominal distension; abdominal radiograph shows a 'coffee bean' sign. He is hemodynamically stable with no signs of peritonitis.Endoscopic detorsion and decompression
  • A 64-year-old man presents with sudden-onset diffuse abdominal pain; emergency laparotomy reveals generalized fecal peritonitis from a ruptured sigmoid diverticulum.Sigmoidectomy with end colostomy (Hartmann procedure)

Answer

The correct matches align each specific anatomical and pathological emergency with its standard-of-care intervention: unstable toxic megacolon requires subtotal colectomy with end ileostomy; stable cecal volvulus requires right hemicolectomy; uncomplicated sigmoid volvulus requires endoscopic detorsion; and Hinchey IV diverticulitis requires a Hartmann procedure.
Each correct pairing directly reflects the surgical standard of care. Large bowel emergencies dictate treatment based on anatomical location, physiological stability, and peritoneal contamination. Stable, uncontaminated patients often tolerate primary anastomoses or non-operative interventions (like endoscopy), whereas unstable or contaminated patients require rapid resection with ostomy diversion.

Step-by-Step Solution

1
Identify the underlying pathology and anatomical location based on the vignette.
Recognize fulminant ulcerative colitis, cecal volvulus, sigmoid volvulus, and perforated diverticulitis.
Surgical management of the large bowel is heavily dependent on the specific disease process and the specific anatomical segment involved.
2
Assess the patient's hemodynamic stability and the presence of generalized peritonitis or bowel ischemia.
The toxic megacolon and perforated diverticulitis patients are unstable or have gross contamination; the volvulus patients are stable and without peritonitis.
Hemodynamic instability or gross fecal contamination typically precludes a safe primary anastomosis, necessitating an ostomy (e.g., end ileostomy or colostomy).
3
Select the optimal intervention based on established surgical guidelines.
Assign subtotal colectomy for emergency IBD, right hemicolectomy for cecal volvulus, endoscopy for uncomplicated sigmoid volvulus, and a Hartmann procedure for fecal peritonitis.
These represent algorithmic standards designed to minimize perioperative mortality and disease recurrence.

Key Concept

Emergency Surgical Management of Large Bowel Pathologies
Rate this question

Topics

Gastrointestinal and Abdominal Surgery

More questions from this topic