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Modification of a nonrebreathing circuit adapter to prevent barotrauma in anesthetized patients
R M McMurphy1, D S Hodgson, P H Cribb
1Department of Clinical Sciences, Kansas State University, College of Veterinary Medicine, Manhattan, USA.
Abstract:
Barotrauma, pneumothorax, and pneumomediastinum occurred in two anesthetized cats in which the waste gas outlet of a nonrebreathing circuit was occluded. To prevent any similar cases of barotrauma, we have modified our nonrebreathing circuit adapters by inserting a 15 cm H2O PEEP valve into the gas pathway of the nonrebreathing circuit adapter. This PEEP valve prevents the circuit and airway pressures from exceeding 15 cm H2O if the pop-off valve of the nonrebreathing circuit adapter is inadvertently left closed.
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