During morning rounds, the intensive care team is consulted regarding a 72-year-old female… — USMLE Step 3

During morning rounds, the intensive care team is consulted regarding a $72$ -year-old female admitted two days prior to the cardiology service. She initially presented with an anterior ST-segment elevation myocardial infarction and underwent successful percutaneous coronary intervention with the placement of a drug-eluting stent in the left anterior descending artery. Her current medical regimen includes aspirin, ticagrelor, atorvastatin, and metoprolol.

Over the last $12$ hours, she has developed worsening, sharp pain in her right upper quadrant. Current vital signs are temperature $39.0^\circ\text{C}$ ( $102.2^\circ\text{F}$ ), heart rate $118/\text{min}$ , blood pressure $102/68\text{ mmHg}$ , and respiratory rate $22/\text{min}$ . Physical examination reveals an absence of scleral icterus but marked tenderness and inspiratory arrest upon palpation of the right upper quadrant. Laboratory studies demonstrate a leukocyte count of $18,200/\text{mm}^3$ . Serum total bilirubin, aspartate aminotransferase, and alkaline phosphatase levels are within normal reference ranges. A bedside right upper quadrant ultrasonogram displays a distended gallbladder with a wall thickness of $6\text{ mm}$ , pericholecystic fluid, and numerous echogenic foci with acoustic shadowing. The common bile duct measures $4\text{ mm}$ in diameter. Intravenous fluids and broad-spectrum antibiotics are initiated.

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

A
Immediate laparoscopic cholecystectomy
B
Endoscopic retrograde cholangiopancreatography with sphincterotomy
Percutaneous cholecystostomy tube placementAnswer
D
Administration of fresh frozen plasma followed by urgent cholecystectomy
E
Discharge to a skilled nursing facility with oral antibiotics and planned interval surgery

Answer

The correct answer is percutaneous cholecystostomy tube placement.

The correct answer is percutaneous cholecystostomy tube placement. This patient has acute calculous cholecystitis, as evidenced by fever, right upper quadrant pain, leukocytosis, and classic ultrasound findings (thickened gallbladder wall, pericholecystic fluid, gallstones). While laparoscopic cholecystectomy is the standard definitive treatment for acute cholecystitis, this patient is a prohibitively high-risk surgical candidate. She had a drug-eluting stent (DES) placed two days ago for an acute ST-segment elevation myocardial infarction. Discontinuation of dual antiplatelet therapy (DAPT) in the early post-stent period carries a catastrophic risk of in-stent thrombosis and fatal myocardial infarction, while performing major abdominal surgery while on DAPT poses a massive risk of uncontrollable hemorrhage. The physiologic stress of general anesthesia and pneumoperitoneum also severely increases myocardial oxygen demand, risking further ischemia in a recently infarcted heart. Therefore, the most appropriate management to achieve source control of her sepsis without subjecting her to prohibitive surgical risk is the placement of a percutaneous cholecystostomy tube. This minimally invasive procedure decompresses and drains the infected gallbladder, stabilizing the patient until surgery can be safely reconsidered (typically weeks to months later, after the critical period for stent endothelialization has passed, or managed non-operatively if she remains too high risk).

Step-by-Step Solution

Diagnose the acute condition based on clinical presentation.

The patient has acute calculous cholecystitis, as evidenced by right upper quadrant pain, fever, leukocytosis, and classic ultrasound findings (thickened gallbladder wall, pericholecystic fluid, and gallstones without common bile duct dilation).

Establishing the correct diagnosis is essential for determining the need for source control.

Assess the patient's surgical risk and evaluate contraindications.

The patient underwent placement of a drug-eluting stent (DES) two days ago. She requires uninterrupted dual antiplatelet therapy (DAPT). Major surgery poses an unacceptable bleeding risk while on DAPT, and stopping DAPT poses a catastrophic risk of in-stent thrombosis.

Identifying prohibitive surgical risks alters the standard management pathway (laparoscopic cholecystectomy) toward less invasive alternatives.

Select the appropriate definitive or bridging procedural intervention.

Percutaneous cholecystostomy tube placement is selected.

This minimally invasive procedure provides necessary drainage and source control of the infected gallbladder under local anesthesia without the need to discontinue life-saving antiplatelet therapy or expose the patient to the physiologic stress of general anesthesia and surgery.

Key Concept

Surgical and procedural management of acute cholecystitis in prohibitively high-risk patients requires percutaneous cholecystostomy for initial source control.

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