A 78-year-old man is evaluated in the intensive care unit for right upper quadrant abdomin… — USMLE Step 3

A 78-year-old man is evaluated in the intensive care unit for right upper quadrant abdominal pain and fever. Three days ago, he was admitted for an acute anterior ST-elevation myocardial infarction complicated by cardiogenic shock. He was treated with primary percutaneous coronary intervention and placement of a drug-eluting stent. His current medications include aspirin, ticagrelor, high-intensity statin, and a continuous intravenous infusion of norepinephrine.

His temperature is $39.2^\circ\text{C}$ ( $102.6^\circ\text{F}$ ), blood pressure is $88/54\text{ mm Hg}$ , pulse is $112/\text{min}$ , and respiratory rate is $22/\text{min}$ . Physical examination reveals marked right upper quadrant tenderness with guarding. A bedside ultrasound demonstrates a distended gallbladder with a thickened wall measuring $8\text{ mm}$ , pericholecystic fluid, and multiple echogenic gallstones. The common bile duct diameter is $5\text{ mm}$ with no stones visualized within it. Laboratory studies show a leukocyte count of $19,500/\mu\text{L}$ , total bilirubin of $0.9\text{ mg/dL}$ , and alkaline phosphatase of $110\text{ U/L}$ . Intravenous fluid resuscitation and broad-spectrum antibiotics have been initiated.

Which of the following is the most appropriate next step in management?

Percutaneous cholecystostomy tube placementAnswer
B
Laparoscopic cholecystectomy
C
Computed tomography scan of the abdomen and pelvis with intravenous contrast
D
Hepatobiliary iminodiacetic acid (HIDA) scan
E
Endoscopic retrograde cholangiopancreatography

Answer

Percutaneous cholecystostomy tube placement is the most appropriate intervention.

The patient presents with classic signs of acute cholecystitis, complicated by sepsis and hemodynamic instability. The definitive treatment for acute cholecystitis is typically surgical removal of the gallbladder (cholecystectomy). However, this patient is a prohibitively high surgical risk due to his recent severe anterior myocardial infarction, cardiogenic shock requiring norepinephrine, and strict requirement for dual antiplatelet therapy to prevent coronary stent thrombosis. In critically ill patients who are unfit for surgery, percutaneous cholecystostomy tube placement under ultrasound or computed tomography guidance is the most appropriate next step. It provides immediate biliary decompression and source control without the physiological stress of general anesthesia or major surgery.

Step-by-Step Solution

Diagnose the acute condition based on clinical and ultrasound findings.

The patient has severe acute calculous cholecystitis complicated by sepsis.

Fever, right upper quadrant pain, leukocytosis, and classic sonographic signs (wall thickening, pericholecystic fluid, gallstones) confirm the diagnosis.

Evaluate the patient's surgical risk.

The patient is deemed a prohibitively high-risk surgical candidate.

Recent severe myocardial infarction, ongoing cardiogenic shock requiring vasopressors, and absolute necessity for uninterrupted dual antiplatelet therapy make general anesthesia and surgery unsafe.

Select the optimal therapeutic intervention for an unstable, poor surgical candidate.

Percutaneous cholecystostomy tube placement is indicated.

When cholecystectomy is contraindicated, percutaneous drainage decompresses the gallbladder, provides necessary source control, and stabilizes the patient until they may become a surgical candidate in the future.

Key Concept

In critically ill patients with acute cholecystitis who are poor surgical candidates, percutaneous cholecystostomy tube placement is the preferred intervention for gallbladder decompression and source control.

Estimated Time:1m 30s

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