Ventilator associated Pneumonia Basics VAP CDC Unravelling the complexity of ventilator associated pneumonia: a systematic methodological literature review of diagnostic criteria and definitions used in clinical research Critical Care Springer Nature Link Ventilator Associated Pneumonia (VAP): Prevention Matters VAP is a serious lung infection that can develop in patients on mechanical ventilation for more than 48 hours. Early prevention and proper care can significantly VAP, VAC, IVAC and Ventilator Associated Events: The Need for Objectivity for Surveillance