Aerobic Bacteriological Profile of Surgical Site Infection with Special Reference to MRSA at Hitech Medical College and Hospital, Bhubaneswar

Surgical site infections are considered as the commonest nosocomial infections after urinary tract infections and are responsible for increasing morbidity, mortality and economic burden. Advances in infection control practices have not completely eradicated this problem because of emergence of multidrug resistant bacteria. Aim of the study is to determine the incidence of SSIs and the prevalence of aerobic bacterial pathogens with their. A prospective observational study of pus samples from post operative wound infections was conducted in various surgical departments of Hi-Tech Medical college & Hospital from November 2016 to July 2018.203 pus samples were collected from clinically diagnosed SSIs. Standard microbiological techniques were used to isolate and identify the organism. Antibiogram was determined by Kirby-Bauer disc diffusion method. Out of 2367 patients, 203(8.5%) were found to have SSIs, out of which 86(42.3%), 75(36.9%) and 42(20.6%) were from Surgery, Orthopedics and Obstetrics & Gynaecology respectively. The common organisms isolated were Staphylococcus aureus 105(51.8%), Escherichia coli 39(19.2%), Pseudomonas spp. 28(13.7%), Acinetobacter spp 22(10.8%) and Klebsiella spp. 9(4.5%). Antibiogram profile of Gram positive isolate revealed maximum sensitivity to Vancomycin and Teicoplanin and Gram negative isolates exhibited highest sensitivity to Amikacin, Imipenem and Meropenem. In the present study 55(52.38%) isolates were MRSA. The incidence of multidrug resistance pathogens as a cause of SSI is rising. Rapid and accurate detection of these pathogens and study of their antibiogram is important for prevention of morbidity and mortality associated with SSI.