CHEST RADIOGRAPH
The presence of pulmonary infiltrates that are not symmetrical on a chest radiograph that is consistent with VAP may be sometimes caused by other noninfectious conditions. However, some chest radiograph findings such as fast cavitation of pulmonary infiltrate that is progressive, air space process that is joining a fissure, bronchogram that is a single air are associated with 96% specific for VAP diagnosis and can be used reliably.10