Unravelling the complexity of ventilator associated pneumonia: a systematic methodological literature review of diagnostic criteria and definitions used in clinical research Critical Care Springer Nature Link PDF) The CDC PNU 1 criteria for diagnosis of ventilator associated pneumonia ()? is a lung infection that can cause serious health complications, especially in patients with weakened immune systems. When a patient is A Successful VAP Prevention Program Respiratory Therapy Procedural and Educational Interventions to Reduce Ventilator Associated Pneumonia Rate and Central Line Associated Blood Stream Infection Rate Scott P. Kellie, Michael J. Scott, Rodrigo Cavallazzi, Tim L. Wiemken, Linda Goss, Deanna Parker,