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the most common type of nosocomial pneumonia, a frequently fatal type seen in patients breathing with a ventilator. It is usually caused by aspiration of contaminated secretions or stomach contents and may be bacterial, viral, or fungal.
In patients receiving invasive mechanical ventilation, a new and persistent infiltrate seen on chest x-ray associated with fever, elevated or depressed white blood cell counts, and sputum that is either purulent or full of disease-causing bacteria. Synonym: artificial airway-associated pneumonia
See also: pneumonia