VENTILATOR ASSOCIATED PNEUMONIA Ventilator associated pneumonia (VAP) is pneumonia that develops 48 hours or longer after mechanical ventilation is given by means of an endotracheal tube or Dr. Aditya Rana VENTILATOR ASSOCIATED PNEUMONIA PPTX Ventilator Associated Pneumonia (VAP): An Overview (2026) Ventilator Associated Pneumonia (VAP): Why is it so difficult to define? In real world practice: The diagnosis of VAP remains more an exercise in clinical integration than strict adherence to criteria.