When planning care for a patient on a mechanical ventilator, the application of positive end-expiratory pressure (PEEP) to the ventilator settings has which therapeutic effect?A. Increased inflation of the lungsB. Prevention of barotrauma to the lung tissueC. Prevention of alveolar collapse during expirationD. Increased fraction of inspired oxygen concentration (FIO2) administration
C. Prevention of alveolar collapse during expirationPEEP is positive pressure that is applied to the airway during exhalation. This positive pressure prevents the alveoli from collapsing, improving oxygenation and enabling a reduced FIO2 requirement. PEEP does not cause increased inflation of the lungs or prevent barotrauma. Auto-PEEP resulting from inadequate exhalation time may contribute to barotrauma.
The correct answer is C. Prevention of alveolar collapse during expiration.
Positive end-expiratory pressure (PEEP) is the application of positive pressure to the airways at the end of expiration which helps to maintain the airway open and prevent the collapse of alveoli during expiration. This improves gas exchange and helps to prevent atelectasis.
PEEP does not increase inflation of the lungs, it helps to maintain the lung inflation at the end of expiration. PEEP does not prevent barotrauma to the lung tissue directly, but it can help to reduce the risk of barotrauma by improving lung compliance and reducing the amount of pressure required to achieve adequate ventilation. PEEP does not increase the fraction of inspired oxygen (FIO2), but it can help to improve oxygenation by improving lung compliance and reducing the risk of atelectasis.
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