Yoğun Bakım Hastalarında Kan Kültürlerinde Üreyen Mikroorganizmaların Değerlendirilmesi
Bloodstream infections are a major cause of mortality and morbidity. The aim of this study was to evaluate microbial growth in blood cultures of the intensive care patients. A total of 1809 positive blood cultures from the Necmettin Erbakan University Meram Faculty of Medicine intensive care units were evaluated in a two-year period including 2016 and 2017. Blood cultures were processed by automatized BAcT/Allert 3D (BioMerieux, France). Microorganisms were identified by using conventional methods and MALDI-TOF MS system (VITEK MS, BioMerieux, France). Of all microbial growth, 69.5% was gram positive bacteria, 25.5% was gram negative bacteria and 5% was yeast. Coagulase Negative Staphylococcus was the most frequently isolated species (55%), followed by Klebsiella pneumoniae (12.4%) and Enterococcus spp. (9.2%). However when Coagulase Negative Staphylococcus and other possible contaminants were excluded, the ratio of gram positive bacteria decreased to 31.4%, the ratio of gram negative bacteria increased to 57% and fungi to 11.6%. The most common fungus was Candida albicans (39%), followed by Candida parapsilosis (16.6%). S. aureus was detected in 3.7% of the positive cultures and 42.6% of these were methicillin resistant. Analysing of the microorganisms is necessary to determine appropriate antimicrobial treatment. In conclusion, the determination of the frequency of microorganisms isolated from blood cultures is essential and important in determining appropriate antimicrobial therapy.