title: Rattling of unidirectional valves due to water obstructing the ventilator hose.
authors.forename: M S
authors.initials: MS
authors.lastname: Stix
authors.forename: C J
authors.initials: CJ
authors.lastname: Borromeo
mesh_terms: D000764:Anesthesia, Closed-Circuit; D006801:Humans; D007432:Intraoperative Period; D012121:Respiration, Artificial / Q000295:instrumentation*; D012122:Ventilators, Mechanical