RESUMO
To provide scientific basis for selecting a prophylactic antibiotic in the cases of elective cholecystectomy, according to our local conditions. Descriptive Study. General Surgery department of Abbasi Shaheed Hospital Karachi from 1st Jan, 2004 to 31st Dec 2004. Fifty patients with chronic cholecystitis ranged between 20 to 65 years were admitted through outpatient department. These patients also included high risk patients with diabetes mellitus, ischaemic heart diseases, hypertension and immunocompromised patients. Patients with acute cholecystitis, empyema, obstructive jaundice, common bile duct stone, carcinoma of gallbladder or biliary tree, cirrhosis and patients having septic foci elsewhere were excluded. Patients were selected according to convenient sampling. During cholecystectomy bile was sent for culture and sensitivity. For analysis of data SPSS-10 was used. In this study positive bile culture was found in 44 percent of cases and most prevelant organisms were E.coli and Klebsiella. With regard to antibiotic sensitivity. Amikacin, quinolone, imipiname and piperacillin has shown almost 90% sensitivity. Prophylactive antibiotic should be used in all cases of elective cholecystectomy