## Comparison of the serial surveillance with quantitative and non-quantitative tracheal aspirate in predicting ventilator-associated pneumonia etiology in patients receiving antibiotic therapy.

The aim of this study was to investigate the value of serial quantitative (QC) and non-quantitative (NQC) endotracheal aspirate (ETA) surveillance cultures in predicting the causative pathogen of ventilator associated pneumonia (VAP) in patients receiving antibiotic therapy and the factors associated with their predictive value. This was a prospective observational cohort study carried out in the Intensive Care Unit of a tertiary hospital.

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