Ventilator-associated pneumonia is the most common infectious respiratory c
omplication in intensive care unit patients, particularly those needing mec
hanical ventilation. Ventilator-associated pneumonia represents a challengi
ng problem in terms of diagnosis, treatment, and prevention, Nosocomial sin
usitis is another respiratory infection, not uncommon in mechanically venti
lated patients. This type of infection has to be suspected in nasally intub
ated patients and may be a hidden focus of fever and sepsis.