RESUMEN
To determine the frequency of common bacteria and their antibiotic sensitivity in patients with symptomatic cholelithiasis This cross sectional descriptive study was conducted at Department of Surgery, Lady reading hospital, Peshawar for 6 months i.e., from December 2012 to May 2013. The total number of patients were 126. They presented with symptomatic cholelithiasis. Bile was aspirated preoperatively before cholecystectomy from gall bladder and was sent for culture and sensitivity test. The data was analyzed using Statistical Package for Social Sciences[SPSS] version 10.0. On culture and sensitivity test, 74 [58.73%] have positive growth while 52 [41.27%] have no growth. The most common bacteria was E. Coli isolated in 28 [22.22%] patients followed by Klebseilla in 22 [17.46%], Salmonellain 16 [12.70%] and Shigella in 8 [6.35%] patients. On culture and sensitivity test, all the 4 isolated bacteria showed sensitivity to Cefuroxime, Ceftriaxone and Ciprofloxacin in more than 50 % cases, while all the four bacteria showed resistance to amoxicillin in more than 50 % cases. The most common bacteria of symptomatic cholelithiasis are E. coli and Klebseilla followed by Salmonella and Shigella. These bacteria showed maximum sensitive to cefuroxime and ceftriaxone