Abstract
BACKGROUND: Antibiotic resistance is becoming a global issue, with estimated 2.8 million people in the United States developing antibiotic-resistant diseases each year. The carriage of ESBL and Carbapenemase-producing Enterobacteriaceae among hospitalized patients is a threat to the future of antibiotic treatment. OBJECTIVE: Multi-drug resistance profile, prevalence of extended-spectrum beta-lactamase and Carbapenemase-producing Gram-negative bacilli among admitted patients after surgery with suspected surgical site nosocomial infection north east Ethiopia. MATERIAL AND METHODS: A hospital-based cross-sectional study was conducted from April 2021 to February 2022. Socio-demographic and clinical data were assessed using a structured questionnaire. A total of 384 relevant clinical samples (pus, pus aspirates, and wound swabs) were collected aseptically and processed within 30 min by placing the swabs into the sterile test tubes having 0.5 mL of sterile normal saline. The samples were cultured on MacConkey agar, chocolate agar and blood agar, and species identification was done using standard biochemical tests. Disk diffusion antimicrobial sensitivity test was done on Mueller-Hinton agar. All the cefoxitin resistant Enterobacteriaceae isolates were checked for the presence of AmpC beta-lactamase using four cartridges of disk diffusion tablets. ESBL output validation was conducted by the combination disk test. The production of Carbapenemase was checked using modified carbapenem inactivation method. RESULTS: The prevalence of significant bacterial nosocomial infection among surgical site infection 343 (89.32%). S. aureus 125 (36.4%) was predominant followed by E. coli 80 (23.3%) P. aeruginosa 31 (9.03%). The overall MDR rate of isolated bacteria was 251 (73.3%). About 150 (73.9%) bacteria were suspected for ESBL production and 67 (33%) AmpC beta-lactamase and 27 (13.3%) Carbapenemase-producing Gram-negative bacterial, respectively. CONCLUSIONS AND RECOMMENDATIONS: The severity of ESBL-PE was critical, and the CPE was alarming. Meropenem and imipenem were the most effective antibiotics against ESBL-producing Enterobacteriaceae. Therefore, strict infection prevention and control measures are needed.