PROPHY VAP: Ceftriaxone to prevent early ventilator associated pneumonia The Bottom Line Ventilator associated pneumonia: pathobiological heterogeneity and diagnostic challenges Nature Communications 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 Prevention of Ventilator Associated Pneumonia Guidelines Side By Side Guideline Central