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Difficulty: HardGastroenterology and Hepatology

A 28-year-old man with a 5-year history of ulcerative colitis is admitted to the hospital with a severe disease flare, characterized by up to 1212 bloody bowel movements daily and severe abdominal cramping. He was started on high-dose intravenous methylprednisolone 33 days ago. Today, he appears profoundly lethargic and confused. Vital signs show a temperature of 39.4∘C39.4^\circ\text{C} (102.9∘F102.9^\circ\text{F}), blood pressure of 88/50 mm Hg88/50\text{ mm Hg}, and pulse of 132/min132/\text{min}. Physical examination reveals a markedly distended, tympanitic abdomen with diffuse rigidity, involuntary guarding, and absent bowel sounds. Laboratory studies show a leukocyte count of 24,000/mm324,000/\text{mm}^3 and serum lactate of 5.1 mmol/L5.1\text{ mmol/L}. An upright chest radiograph reveals free air under the right hemidiaphragm. The patient's legally appointed healthcare proxy (his brother) is en route to the hospital and is currently unreachable by phone. His girlfriend, who is at the bedside, requests that the medical team wait for the brother before proceeding with any major interventions. What is the most appropriate next step in the management of this patient?

  1. A
    Escalate medical therapy by adding broad-spectrum intravenous antibiotics
  2. B
    Delay surgical intervention until the legally appointed proxy provides consent
  3. Proceed immediately with an exploratory laparotomyAnswer
  4. D
    Transport the patient for a computed tomography scan of the abdomen and pelvis
  5. E
    Administer an intravenous sodium bicarbonate infusion to normalize the pH

Answer

Proceed immediately with an exploratory laparotomy
This patient has a history of severe ulcerative colitis and now presents with altered mental status, hemodynamic instability, diffuse peritonitis, and free air under the diaphragm on a chest radiograph. This presentation is highly consistent with a perforated toxic megacolon. A perforated viscus with signs of peritonitis and septic shock is an absolute surgical emergency requiring immediate exploratory laparotomy. Although the patient lacks decision-making capacity and his designated healthcare proxy is unreachable, the ethical and legal principle of implied consent permits physicians to provide immediate, life-saving treatment without waiting for formal authorization. Delaying care for consent or further imaging would likely be fatal.

Step-by-Step Solution

1
Analyze the clinical presentation and diagnostic findings.
The patient has severe ulcerative colitis complicated by a perforated toxic megacolon (indicated by pneumoperitoneum, diffuse rigidity, and septic shock).
Identifying the complication is critical for determining the urgency of the intervention.
2
Determine the definitive medical or surgical requirement.
A perforated viscus with hemodynamic instability mandates emergent surgical source control (exploratory laparotomy).
Medical management alone is uniformly fatal once gross perforation and peritonitis have occurred.
3
Apply medical ethics principles regarding consent in emergencies.
Proceed with surgery under implied consent.
The patient lacks decision-making capacity (lethargic/confused), the condition is immediately life-threatening, and the legal proxy is temporarily unreachable.

Key Concept

Emergent surgical management of a perforated toxic megacolon and the application of implied consent in life-threatening emergencies.
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Topics

Gastroenterology and Hepatology

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