â– LECTURE OVERVIEW: Acute Cholecystitis is an inflammatory condition of the gallbladder, most commonly triggered by a gallstone obstructing the cystic duct (calculous cholecystitis).
â– THE CASCADING METABOLISMS:
1. Cystic Duct Blockage: A stone blocks the cystic duct.
2. Mucosal Distension: Secreted mucus cannot drain, causing gallbladder distension and severe wall tension.
3. Mucosal Ischemia: Mural tension compresses mucosal capillaries, causing ischemia.
4. Bacterial Translocation: Ischemia compromises the mucosal barrier, promoting bacterial translocation (commonly E. coli, Klebsiella) that worsens inflammation.
5. Peritoneal Irritation: The inflamed gallbladder rubs against the adjacent parietal peritoneum of the anterior abdominal wall.
â– RADIOGRAPHIC DIAGNOSTIC CRITERIA:
Imaging modalities (such as high-resolution CT, contrast-enhanced MRI, and point-of-care ultrasound) show characteristic density shifts, enhancement patterns, or structural deviations.
â– SECONDARY PREVENTION METRICS:
Implementing long-term dietary adaptations, physical therapy, and compliance aids reduces the rate of recurring acute crises by more than half.
[HY-BOARD-1237]
🌟 Dynamic Clinical Key:
Murphy's sign is elicited by palpating the right upper quadrant under the costal margin. As the patient takes a deep breath, the diaphragm descends, pushing the inflamed gallbladder against the examiner's fingers. This causes localized pain, prompting the patient to abruptly halt inspiration (inspiratory arrest). Always correlate imaging signs with clinical presentation to avoid unnecessary surgical explorations of benign incidentalomas. Patient education regarding warning signs and therapy adherence is the cornerstone of secondary prevention.