Mislocated pop-off valve can produce airway overpressure in manual resuscitator breathing circuits.
D015982:Bias; D004867:Equipment Design; D004868:Equipment Failure; D004869:Equipment Safety; D006801:Humans; D008991:Monitoring, Physiologic / Q000295:instrumentation; D011312:Pressure; D012121:Respiration, Artificial / Q000295:instrumentation*