Ventilator Associated Pneumonia (VAP) EMCrit Project Ventilator Associated Pneumonia Frontiers Biomarker based diagnosis of ventilator associated pneumonia using serum and bronchoalveolar lavage fluid levels of presepsin, procalcitonin, and lipopolysaccharide binding protein 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. Vae,vac and vap prevention