Frontiers Neonatal Ventilator Associated Pneumonia: A Quality Improvement Initiative Focusing on Antimicrobial Stewardship Risk Factors, Pathogens, and Outcomes of Ventilator Associated Pneumonia in Non Cardiac Surgical Patients: A Retrospective Analysis VAP Bundle Ventilator Associated Pneumonia Ventilator Associated Pneumonia ( VAP) is a lung infection that occurs in patients who are on mechanical ventilation for more than 48 hours. A VAP bundle is a set of Microbiology of Ventilator Associated Pneumonia IntechOpen