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Zorluk: Çok zorGastroenterology and Hepatology

A 7575-year-old man is evaluated in the intensive care unit due to a sudden deterioration in his clinical status. He was admitted 1414 days ago for an open repair of a ruptured abdominal aortic aneurysm. His recovery has been complicated by prolonged mechanical ventilation and reliance on total parenteral nutrition. Over the past 33 days, he developed progressive abdominal distension and high-volume bilious drainage from a nasogastric tube. He has not had a bowel movement for a week.

This morning, his temperature spiked to 39.4∘C39.4^\circ\text{C} (102.9∘F102.9^\circ\text{F}). His blood pressure dropped to 82/50 mmHg82/50 \text{ mmHg}, and his heart rate is 122/min122/\text{min}. He is receiving a continuous infusion of norepinephrine, and broad-spectrum intravenous antibiotics (piperacillin-tazobactam) have been initiated.

Physical examination demonstrates a markedly distended and tympanitic abdomen with absent bowel sounds. There is focal tenderness to deep palpation in the right upper quadrant.

Laboratory studies:
Leukocyte count: 25,500/mm325,500/\text{mm}^3 (with 15%15\% bands)
Hemoglobin: 9.8 g/dL9.8 \text{ g/dL}
Total bilirubin: 3.1 mg/dL3.1 \text{ mg/dL}
Alkaline phosphatase: 340 U/L340 \text{ U/L}
Aspartate aminotransferase (AST): 92 U/L92 \text{ U/L}
Lactate: 4.8 mmol/L4.8 \text{ mmol/L}

A portable abdominal radiograph shows diffuse dilation of both the small and large intestines without a discrete transition point. No pneumoperitoneum is present. A bedside right upper quadrant ultrasound reveals a distended gallbladder with a wall thickness of 7 mm7 \text{ mm}, pericholecystic fluid, and no intraluminal echogenic shadowing. The common bile duct diameter is 4 mm4 \text{ mm}.

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

  1. Image-guided percutaneous cholecystostomyCevap
  2. B
    Laparoscopic cholecystectomy
  3. C
    Surgical exploration of the abdomen
  4. D
    Endoscopic retrograde cholangiopancreatography
  5. E
    Escalation of antimicrobial therapy to meropenem and micafungin

Cevap

Image-guided percutaneous cholecystostomy
The correct answer provides immediate source control for acute acalculous cholecystitis. This patient is critically ill and hemodynamically unstable (requiring vasopressors for septic shock), which makes him an extremely poor candidate for general anesthesia and definitive surgery (cholecystectomy). In such critically ill patients, image-guided percutaneous cholecystostomy is the standard, life-saving intervention to decompress and drain the infected gallbladder.

Adım Adım Çözüm

1
Identify the primary diagnosis based on the clinical presentation and imaging.
The patient has acute acalculous cholecystitis, supported by fever, right upper quadrant tenderness, thickened gallbladder wall, pericholecystic fluid, and absence of gallstones in a critically ill patient on total parenteral nutrition.
Establishing the true source of sepsis is necessary to determine the appropriate targeted intervention.
2
Evaluate the significance of the abdominal distension and radiographic findings.
The diffuse dilation of both small and large bowel without a transition point represents a paralytic ileus, secondary to the severe intra-abdominal infection, rather than a mechanical obstruction.
Differentiating between an ileus and a mechanical obstruction prevents unnecessary and potentially fatal exploratory surgery.
3
Assess the patient's hemodynamic stability and surgical risk.
The patient is in septic shock and requires a norepinephrine infusion, making him a critically ill patient with prohibitive surgical risk.
Surgical risk stratification dictates whether a patient can undergo definitive surgery (cholecystectomy) or requires a less invasive bridging procedure.
4
Select the most appropriate management for the established diagnosis and patient stability.
Image-guided percutaneous cholecystostomy is the standard of care for acute acalculous cholecystitis in hemodynamically unstable patients.
It provides immediate, life-saving source control of the infection with significantly lower morbidity and mortality compared to general anesthesia and surgery.

Anahtar Kavram

Acute acalculous cholecystitis often occurs in critically ill patients (e.g., following severe trauma, major surgery, or prolonged TPN) and is optimally managed with percutaneous cholecystostomy when patients are too unstable for definitive cholecystectomy.
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Gastroenterology and Hepatology

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