<unk>  occurring early after intubation typically involves fewer resistant organisms and is thus associated with a more favorable outcome. Because respiratory failure requiring mechanical ventilation is itself associated with a high mortality, determination of the exact contribution of<unk>  to mortality has been difficult. As of 2006, estimates range from 33% to 50% death in patients who develop<unk> . Mortality is more likely when<unk>  is associated with certain microorganisms (Pseudomonas, Acinetobacter), blood stream infections, and ineffective initial antibiotics.<unk>  is especially common in people who have acute respiratory distress syndrome (ARDS).
Ventilator-associated pneumonia
Hospital-acquired pneumonia
Community-acquired pneumonia
Occult pneumonia
Idiopathic pneumonia syndrome
Ventilator-associated lung injury
Aspiration pneumonia
Hantavirus pulmonary syndrome