Inhalation is a common condition in patients with impaired their awareness requiring protection of the upper airway by endotracheal intubation. This inhalation may lead to chemical pneumonitis and/or bacterial pneumonia. Only the latter requires the administration of antibiotics. Patients developing such a bacterial pneumonia, has a mortality, duration of mechanical ventilation and length of ICU stay increased. However, the proportion of patients with such bacterial pneumonia, bacterial ecology and morbidity that are little known.