Distribution of Bacterial Strains and their Antibiotic Sensityvity Profile in an Urban Referral Hospital

Abstract

Then Present study was done to assess the distribution of bacterial pathogens with their pattern of antibiotic susceptibility in an urban referral hospital in RMCH. A total of 393 bacteria strains were isolated from various specimens over a 10-months period. The majority of the organisms were Escherichia coli (33.33%) followed by Klebsiella species (27.48%), staphylococcus aureus (17.05%), Acinetobcter species (8.14%), Pseudomonas species (7.12%), and others. The third-generation Cephalosporins like Ceftriaxone, Ceftazidime and Cefotaxime were sensitive to Ciprofloxacin of various Enterobacteriaceae was only between 33-40% compared to 52.8-37.9% against Gentamicin. Majority of the Enterobacteriaceae were resistant to Ampicillin, whereas almost all of the Enterobacteriaceae (94-100%) were sensitive to Imipenem. About 97.0% Acinetobacter species were susceptible to Imipenem. Sensitivity of the organism (Acinetobacter) to third-generation Cephalosporins ranged between 50-56%, whereas 40.6% were found sensitive to Ciprofloxacin. The sensitivity to Chloramphenicol, Co-trimixazole, Cephalexin and Ampicillin ranged between 9.3% to 34.3%. About 93.0% of Pseudomonas species were sensitive to Imipenem. The rate of susceptibility to Gentamicin and Netilmicin was higher than those of the Ciprofloxacin and Ceftriaxone (37.8% and 53.5% vc. 39.2%). About 70% of isolated S. aureus were resistane of Oxacillin but all were sensitive to Vancomycin. The result of this study would help the physicians to make a judicious choice of antibiotics for therapeutic purposes.

TAJ 2012; 25: 72-76