Modification of a nonrebreathing circuit adapter to prevent barotrauma in anesthetized patients.
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.
McMurphy
R M
RM
Department of Clinical Sciences, Kansas State University, College of Veterinary Medicine, Manhattan, USA.
Hodgson
D S
DS
Cribb
P H
PH
D000758:Anesthesia / Q000009:adverse effects / Q000662:veterinary*; D000776:Anesthesiology / Q000295:instrumentation*; D000818:Animals; D001469:Barotrauma / Q000209:etiology / Q000517:prevention & control / Q000662:veterinary*; D002371:Cat Diseases / Q000209:etiology / Q000517:prevention & control* / Q000601:surgery; D002415:Cats; D005260:Female; D007410:Intestinal Diseases / Q000601:surgery / Q000662:veterinary; D008297:Male; D008478:Mediastinal Emphysema / Q000209:etiology / Q000517:prevention & control / Q000662:veterinary*; D011030:Pneumothorax / Q000209:etiology / Q000517:prevention & control / Q000662:veterinary*; D011175:Positive-Pressure Respiration / Q000295:instrumentation / Q000662:veterinary; D012119:Respiration