Initial Management of Acute Cholecystitis

Clinical Presentation and Diagnosis

Patients typically present with right upper quadrant abdominal pain, fever, and tenderness 1
Murphy's sign (pain on palpation during inspiration) is characteristic 1
Laboratory findings often include leukocytosis and elevated inflammatory markers 2
Ultrasound is the investigation of choice for suspected acute cholecystitis, showing pericholecystic fluid, distended gallbladder, edematous gallbladder wall, gallstones, and Murphy's sign can be elicited on ultrasound examination 1, 3, 4

Antibiotic therapy should be started promptly and guided by the severity of illness and local resistance patterns 1, 5
For uncomplicated cholecystitis in stable, immunocompetent patients, amoxicillin/clavulanate 2g/0.2g q8h or alternative antibiotics such as eravacycline or tigecycline can be used 1, 5, 6
For complicated cholecystitis or critically ill/immunocompromised patients, piperacillin/tazobactam or alternative antibiotics such as eravacycline can be used 1, 6

Early laparoscopic cholecystectomy (within 7-10 days of symptom onset) is the treatment of choice 1, 2, 4
Early cholecystectomy results in shorter hospital stays and quicker recovery compared to delayed intervention 4
Postoperative antibiotics are not necessary in uncomplicated cholecystitis when the source of infection is controlled by cholecystectomy 2, 5

In patients with concomitant choledocholithiasis and cholangitis, MRCP should be performed to evaluate the common bile duct 1
Microbiological cultures should be obtained in complicated cases to guide targeted antibiotic therapy 2, 3
Antibiotics with good biliary penetration (piperacillin/tazobactam, tigecycline, amoxicillin/clavulanate, ciprofloxacin) should be preferred 2

For patients treated with early cholecystectomy, routine follow-up is recommended to monitor for complications 1

Elderly patients with uncomplicated cholecystitis can be treated without postoperative antibiotics when the focus of infection is controlled by cholecystectomy 7
The World Journal of Emergency Surgery recommends considering antibiotic-only treatment temporarily for patients with prohibitive surgical risk, such as frail patients or those unfit for immediate surgical intervention 7
The World Journal of Emergency Surgery also suggests considering antibiotic-only treatment for patients requiring medical optimization before surgery, with the goal of eventual surgical management 7