Antimicrobial resistance of bacteria isolated in blood cultures performet at the Aleida Fernandez Hospital, Mayabeque, 2022

Abstract

Introduction: bloodstream infections are an important cause of mortality worldwide. Using incorrect empiric therapies results in increases in antimicrobial resistance and deteriorating prognosis. The test of choice to identify these microorganisms that cause disease in the bloodstream is the blood culture. It is performed when there is suspicion of an infectious process or the need to identify the microorganism that causes the infection. The probability that the result of positive blood cultures represents a true bacteremia increases when the sample is obtained with a good technique; false positives lead to the inappropriate use of antibiotics. Objective: to characterize the blood culture samples processed in the microbiology laboratory of the Teaching-Clinical-Surgical Hospital Aleida Fernandez Chardiet. Methods: an observational descriptive cross-sectional study of 407 blood culture samples was carried out, collected and processed in the period from January to December 2022, in the microbiology laboratory of the Teaching-Clinical-Surgical Hospital. "Aleida Fernandez Chardiet" from Mayabeque, Cuba. Results: 19.41% of the blood samples were positive in the blood culture of These are the Nephrology services and the Care Unit Intensive were the ones that added the most positives. There was a great infection by gram-positive microorganisms, with a higher frequency of coagulase-negative Staphylococcus with 38%. Conclusions: it was found that the frequency of isolation in blood culture samples was low. The microorganisms that were isolated showed great resistance to beta-lactam antibiotics.