Design of Zoll defibrillators can result in failure to deliver defibrillation energy.
D004554:Electric Countershock / Q000295:instrumentation*; D004562:Electrocardiography / Q000295:instrumentation; D004867:Equipment Design; D004868:Equipment Failure; D006323:Heart Arrest / Q000628:therapy*; D006801:Humans; D012815:Signal Processing, Computer-Assisted