Abnormal ECG pattern during battery operation of Mennen model 741 ECG monitor.
D000768:Anesthesia, General; D004562:Electrocardiography / Q000295:instrumentation*; D004868:Equipment Failure; D005260:Female; D006801:Humans; D007044:Hysterectomy; D008991:Monitoring, Physiologic / Q000295:instrumentation; D013997:Time Factors