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Zorluk: OrtaInterpreting Imaging Results

A 72-year-old man is currently in the surgical intensive care unit recovering from an emergent open abdominal aortic aneurysm repair performed five days ago. Over the past 24 hours, he has developed a fever of 39.2∘C39.2^\circ\text{C} (102.6∘F102.6^\circ\text{F}) and worsening leukocytosis. He remains intubated and sedated. Physical examination reveals a tense, distended abdomen with involuntary guarding in the right upper quadrant upon deep palpation. A bedside right upper quadrant ultrasound is performed to evaluate the source of his clinical deterioration. The sonographic report details a significantly distended gallbladder with a wall thickness of 6 mm6\text{ mm}, a distinct rim of pericholecystic fluid, and a complete absence of gallstones or biliary sludge. The common bile duct measures 4 mm4\text{ mm} in diameter. Based on the interpretation of these imaging findings, which of the following is the most appropriate next step in management?

  1. Placement of a percutaneous cholecystostomy tubeCevap
  2. B
    Administration of intravenous antibiotics and observation
  3. C
    Endoscopic retrograde cholangiopancreatography
  4. D
    Hepatobiliary iminodiacetic acid scintigraphy
  5. E
    Immediate open cholecystectomy

Cevap

Placement of a percutaneous cholecystostomy tube is the most appropriate next step for a critically ill patient whose imaging confirms acute acalculous cholecystitis.
The correct answer is placement of a percutaneous cholecystostomy tube. The patient's ultrasound demonstrates a thickened gallbladder wall and pericholecystic fluid in the complete absence of stones. In the context of a critically ill, mechanically ventilated patient recovering from major surgery, these imaging findings are diagnostic of acute acalculous cholecystitis (AAC). AAC occurs due to gallbladder stasis and ischemia. Because these patients are inherently high-risk surgical candidates with substantial mortality rates if subjected to major operations, the standard of care is minimally invasive decompression via percutaneous cholecystostomy tube placement, alongside broad-spectrum intravenous antibiotics.

Adım Adım Çözüm

1
Interpret the sonographic findings.
The presence of gallbladder wall thickening (>4 mm>4\text{ mm}) and pericholecystic fluid without gallstones is diagnostic of acute acalculous cholecystitis (AAC).
Accurate interpretation of imaging is required to establish the source of sepsis in a critically ill patient.
2
Assess the patient's clinical status and surgical risk.
The patient is intubated in the ICU following a major open vascular repair, making him a prohibitive surgical risk.
Management decisions for AAC depend heavily on the patient's ability to tolerate general anesthesia and surgical stress.
3
Select the appropriate intervention based on the interpreted imaging and patient status.
Percutaneous cholecystostomy is chosen over cholecystectomy.
It provides immediate, minimally invasive decompression and source control of the infected gallbladder for patients too unstable for surgery.

Anahtar Kavram

Interpretation of ultrasound findings diagnostic for acute acalculous cholecystitis and subsequent management in critically ill, high-surgical-risk patients.
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Konular

Interpreting Imaging Results

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