A modified expiratory valve for teaching.
The shrouding of anaesthetic expiratory valves prevents the anaesthetist from either seeing valve disc movement or hearing clearly the escape of gas during expiration. A modification to one type of valve (Medishield II) is described which replaces this lost information by providing a direct indication of valve opening.
Sansome
A J
AJ
Shackleton Department of Anaesthetics, Southampton General Hospital.
Bacon
R
R
D000776:Anesthesiology / Q000193:education / Q000295:instrumentation*; D004503:Education, Medical, Graduate; D004867:Equipment Design; D006801:Humans; D011312:Pressure; D013663:Teaching; D012122:Ventilators, Mechanical