Ventilator associated pneumonia: mechanisms, an appraisal of current therapies and the role for inhaled antibiotics in Ventilator associated Pneumonia Basics VAP CDC Suction Catheter Closed System 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