Investigation of the Factors Associated with Mortality in Catheter-Related Bloodstream Infections: Five-Year Observation

Abstract

Aim: Intravenous catheter use can cause various infections ranging from infection at the site of catheter entry to bacteremia and colonization. The purpose of this study was to identify the causative micro-organisms, and effects on morbidity-mortality of catheter-related bloodstream infections developing over the last five years. Material and Methods: Data for 194 patients who underwent central intravenous catheter insertion in our hospital's intensive care unit and other departments between November 2014 and August 2019 were analyzed retrospectively. Blood samples taken from the catheter or the catheter tip, and blood samples collected simultaneously from the peripheral vein were included in the study, and culture results were recorded. Patients' demographic data and the effects of the factors identified on morbidity and mortality were subjected to statistical analysis. Results: Ninety-two (47.4%) of the 194 patients included in the study were female and 102 (52.6%) were male, and mortality rate was 62.4% (n=121). The frequency of underlying medical conditions such as asthma, congestive heart failure, and cerebrovascular event, and receiving treatments such as immunosuppression, transfusion, tracheostomy, nasogastric tube, and mechanical ventilation were higher in mortal cases than non-mortal cases. A total of two hundred and forty microorganisms were detected in 194 patients, 121 (50.4%) of which were Gram negative bacteria, while 68 (28.3%) were Gram positive bacteria, and 51 (21.3%) were Candida species. Conclusion:As a result, it was observed that the advanced age, underlying diseases and presence of resistant microorganisms were higher in mortal cases.