It's based in an observational trial in mechanical ventilated patients. The investigators assess the head of bed elevation angle in the routine treatment of the unit. The investigators decide to assess the time the patient has a semirecumbent position >35°.

A Semirecumbent-bed position in mechanical ventilated patients is recommended in every international guidelines in order to avoiding Ventilator Associated Pneumonia (VAP). Despite being a simple and cheap measure, the literature describe a low compliance. Globally, every intensive care unit tends to use different maneuvers that help or improve compliance of this recommendation. However, there are multiple factors in daily work that hinder compliance. Before taking actions, it would be convenient to know the current state of the unit.

Investigators aim to evaluate the quality with which the recommendation is carried out in the unit in order to maintain a semirecumbent position. To conduct the Trial it will be used a device that measures continuously (every 5 minutes) the angle of the bed without giving any information to caregivers. Once patients are extubated the data will be collected.

Inclusion Criteria:

• Every ventilated patients

Exclusion Criteria:

• Patients excluded are those lower that 18 years old or neurocritical patients that require flat position.

We aim to include every mechanical ventilated patients any reason.