Chest X ray (CXR) AP view of Ventilator associated pneumonia (VAP) (A) Download Scientific Diagram Just How Harmful Is Vaping? More Evidence Is Emerging. The New York Times Vaping Information Substance Use Prevention Services Youth Services System, Inc. Youth Services System, Inc. Ventilator associated pneumonia (VAP) is a type of pneumonia that develops at least 48 hours after a patient was intubated and placed on the mechanical ventilator. It's a preventable lung infection that can