Cholecystitis Organism-Specific Therapy 

Updated: Dec 10, 2016
  • Author: Vikram Kate, MBBS, MS, PhD, FACS, FACG, FRCS, FRCS(Edin), FRCS(Glasg), FIMSA, MAMS, MASCRS; Chief Editor: BS Anand, MD  more...
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Specific Organisms and Therapeutic Regimens

Organism-specific therapeutic regimens for cholecystitis are provided below, including those for enterococci, Bacteroides species (spp), and Enterobacteriaceae spp infections, as well as for perisurgical considerations. [1, 2, 3, 4, 5, 6, 7, 8]

Factors to be considered in the selection of antibiotics for cholecystitis are targeted organisms and the pharmacokinetics and pharmacodynamics of the drugs. The local antibiogram, as well as the patient's history of antimicrobial usage, renal and hepatic function, history of allergies and other adverse events are also important factors that affect response to antibiotics. [7]

Enterococci

See the following:

Vancomycin-resistant enterococci (VRE)

Bacteroides spp.

Clindamycin resistance among Bacteroides species is significant; therefore, the use of clindamycin is no longer universally recommended. Local antibiotic sensitivity patterns will guide clinicians regarding the efficacy and utility of clindamycin. [7]

Enterobacteriaceae spp.

Note the following regimens:

The use of ampicillin/sulbactam as monotherapy is no longer recommended because of high rates of resistance to this agent among community-acquired Escherichia coli. [10]  

ESBL-producing Enterobacteriaceae

See the following regimens:

Pseudomonas aeruginosa

See the following regimens:

  • Imipenem-cilastatin 250-500 mg IV q6-8h plus  metronidazole 500 mg IV q8h  or
  • Ertapenem 1 g IV daily plus  metronidazole 500 mg IV q8h   or
  • Meropenem 0.5-1 g IV plus  metronidazole 500 mg IV q8h or
  • Doripenem 500 mg IV plus  metronidazole 500 mg IV q8h or
  • Piperacillin-tazobactam 3.375 g IV q6h plus metronidazole 500 mg IV q8h 

Salmonella typhi

See below.

  • Ciprofloxacin 400 mg IV q12h [11]

Perioperative considerations

Prophylaxis with cefazolin 1-2 g IV within 60 minutes before surgical incision is indicated for routine cholecystectomy in high-risk patients, as well as in high-risk patients in general. The same recommendations may be applied for patients undergoing endoscopic retrograde cholangiopancreatography (ERCP).

Antibiotics are generally not recommended immediately following surgery, unless there is clinical and laboratory evidence of infection.

When cholecystectomy is performed, antibiotics can be stopped within 24 hours. However, there is an indication to continue antibiotics even after cholecystectomy in grade II and grade III acute cholecystitis. [7]