The most common causes of VAP in children Download Table Life in icu follow for more clinical tips Ventilator Associated Pneumonia (VAP) Definition: Pneumonia that develops 4872 hours after endotracheal intubation and mechanical ventilation. Common Causes Gram negative bacilli Striving for excellence in ventilator bundle compliance through continuous quality improvement initiative in the intensive care unit of a tertiary care hospital in India Ventilator associated pneumonia: A lung infection that can occur in people who are on mechanical ventilation,