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Anesthesia

Pressure Support Ventilation Preferred Over Continuous Positive Airway Pressure

Published in Pain and Central Nervous System Week, July 29th, 2000

Researchers say that in adults, pressure support ventilation (PSV) exchanges gas and maintains "leak fraction" more effectively than continuous positive airway pressure (CPAP) with a laryngeal mask.

To determine the most effective method of anesthetizing adults, J. Brimacombe and colleagues with Cairns Base Hospital in Cairns, Australia, carried out a study of 40 adults patients who received anesthesia via a series of both methods. Group 1 received CPAP, PSV, then CPAP, each for 10 minutes and Group 2 received PSV, CPAP, then PSV, also for 10 minutes each.

"PSV comprised positive end expiratory pressure set at 5 cm H2 O and inspiratory...

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