No. of VAP episodes 40 Temperature °C a 38.9 ± 0.81 (36 - 40.2) TLC a 17995± 6840 (3200 - 32700) PaO2 / FiO2a 185 ± 65.3 (112 - 320) Purulent tracheo- bronchial secretions Scanty 1 Moderate 14 Profuse 25 Abnormal chest X-ray Collapse 21 Consolidation 8 B/L pulmonary haziness 6 ARDS 4 Cavitatory lesions 1 CPIS a (range) 7.8 ± 1.5 (6-10)