Pulmonary volutrauma is a condition in which the alveoli and bronchioles of the lungs are damaged by excessive levels of air, thus overinflating the lungs and physically damaging the tissue. It is often the result of improper or incorrect use of a medical ventilator. Volutrauma is separate from Pulmonary barotrauma because the mechanism of injury is excessive volume (volutrauma), instead of pressure (barotrauma).
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Pulmonary volutrauma Wikipedia(Text) CC BY-SA