Timing is everything. Simple device helps prevent excessive ventilations.
Hildwine
Fran
F
Crozer Chester Medical Cener, Delaware County, PA, USA. fran100b@zoominternet.net
D016887:Cardiopulmonary Resuscitation / Q000295:instrumentation*; D004632:Emergency Medical Services; D006801:Humans; D012119:Respiration; D014481:United States