Air Stacking Technique For Pulmonary Reexpansion

A cross-over randomized clinical trial carried out at the Intensive Care Unit. Patients who are on mechanical ventilation for more than 24 hours will be included in the study. The following techniques will be applied: aspiration in a closed system with an expiratory pause of 10 seconds associated to hyperinflation maneuver with a mechanical ventilator with the Air Stacking technique and aspiration technique in a closed system of aspiration with an expiratory pause of 10 seconds.

Inclusion Criteria:patients 18 years or olderpatients on mechanical ventilation for more than 48 hourspatients on volume or pressure controlled ventilatory modepatients hemodynamically stable (equal mean blood pressure or more than 60 mmHg, and dose of Norepinephrine less than 1μg / Kg / minute)patients whose legal representatives authorize participation in the study.Exclusion Criteria:undrained pneumothorax and hemothorax, and emphysema subcutaneousfracture of ribsventilatory parameters with peak pressure greater than 40 cm/H2O