Intermittent oxygen delivery in an Ohmeda Unitrol anesthesia machine due to a faulty O-ring check valve assembly.
Varga
D A
DA
Guttery
J S
JS
Grundy
B L
BL
D000776:Anesthesiology / Q000295:instrumentation*; D004867:Equipment Design; D004868:Equipment Failure; D010106:Oxygenators