-Pneumonia is a bacterial, viral or fungal infection of the lungs, which causes the alveoli of the lungs to fill up with microorganisms, fluid and inflammatory cells, preventing the lungs from functioning effectively

The classification scheme for pneumonia in UK NHS hospitals is based on the setting in which the infection was mostly likely acquired:

community-acquired pneumonia (CAP), when a patient is in the hospital <48h before the pneumonia is suspected; hospital-acquired pneumonia (HAP), when a patient is in the hospital >48h before the pneumonia develops, but is not associated with mechanical ventilation; and ventilator-associated pneumonia (VAP), when a patient is mechanically ventilated and intubated for >48h before the pneumonia develops The causative pathogens in each scenario are different, and treatment strategies vary as a consequence.

-Pneumonia is a bacterial, viral or fungal infection of the lungs, which causes the alveoli of the lungs to fill up with microorganisms, fluid and inflammatory cells, preventing the lungs from functioning effectively

The classification scheme for pneumonia in UK NHS hospitals is based on the setting in which the infection was mostly likely acquired:

community-acquired pneumonia (CAP), when a patient is in the hospital <48h before the pneumonia is suspected; hospital-acquired pneumonia (HAP), when a patient is in the hospital >48h before the pneumonia develops, but is not associated with mechanical ventilation; and ventilator-associated pneumonia (VAP), when a patient is mechanically ventilated and intubated for >48h before the pneumonia develops The causative pathogens in each scenario are different, and treatment strategies vary as a consequence.

Inclusion Criteria:

• Patient 18 yrs or more Mechanically ventilated patients after 48 hrs after admission of ICU

Exclusion Criteria:

• Patient less than 18 yrs Patients diagnosed as pneumonia

Patients with VAP Patients who don't develop VAP