Frequency and Antibiotic Susceptibility of Pseudomonas aeruginosa and Acinetobacter baumannii Infections in Pediatrics Intensive Care Unit of Imam Ali Hospital, Karaj, Iran During 2017- 2018

Background: Pseudomonas aeruginosa and Acinetobacter baumannii are widely ubiquitous in nature. In addition, they are opportunistic pathogens for humans and the common cause of nosocomial infections. Objective: Due to the increased antibiotic resistance in the treatment of nosocomial infections, this study aimed to evaluate the antibiotic susceptibility pattern of P. aeruginosa and A. baumannii in the pediatrics intensive care unit (PICU). Materials and Methods: Totally, 280 clinical samples from PICU patients were evaluated in this study. The samples were examined for P. aeruginosa and A. baumannii using standard microbiological methods. Finally, the Epsilometer test method was performed to investigate the antibiotic susceptibility pattern of these bacteria. Results: The results revealed a total of 21 isolates (7.5%) of P. aeruginosa and 11 isolates (3.9%) of A. baumannii. P. aeruginosa isolates showed the highest susceptibility to colistin (85.7%) and gentamicin (66.7%) while A. baumannii isolates were more susceptible to colistin (100%), ceftazidime (54.5%), and amikacin (45.5%), respectively. Conclusion: Due to the antibiotic susceptibility patterns of bacterial isolates in the recent study, colistin and gentamicin are recommended for the treatment of P. aeruginosa infections and colistin, ceftazidime, and amikacin are suggested for A. baumannii infections.