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- MALDI – TOF MS; VITEK II; Identificación bacteriana; 576; Análisis microbiológico; Muestras clínicas; Control de infecciones; Bacterial identification; Espectrometría de Masa por Láser de Matriz Asistida de Ionización Desorción
thesis / dissertation description
Introduction: Rapid detection and bacterial identification is essential for the management of critically ill patients who have an infectious disease, this requires quick and accurate for the start of proper treatment methods. In Colombia conventional microbiology tests are used. No studies mass spectrometry analysis of samples in critically ill patients in Colombia. Objective: Describe the experience of microbiological analysis by MALDI-TOF MS in samples taken at the Santa Fe de Bogota Foundation technology. Materials and Methods: Between June and July 2013, 147 bacterial isolates from clinical samples, which were previously processed by the VITEK IIsystem were analyzed. 88 isolates were blood cultures (60%), 28 urine cultures (19%), and other crops 31 (21%). Results: Of the 147 isolates obtained proper identification to genus and / or species as follows: 88.4% in (130 samples) to genus and species, with a correlation of 100% compared to the VITEK II system. The identification percentage was 66% in gram negative bacilli group nonfermenting, 96% in Enterobacteriaceae, 100% in fastidious bacteria, 92% in gram-positive cocci, gram-negative bacilli 100% and 100% mobile yeast. There was no correlation in gram-positive bacilli and germs of the genus Aggregatibacter. Conclusions: The MALDI-TOF MS is a quick and easy for microbiological identification of genus and species which correlates with results obtained conventionally test. There are no studies to make the MALDI-TOF MS gold proof identification of germs.