title: Risk of shock from early-model Zoll PD 1200 defibrillators during routine discharge test.
mesh_terms: D017147:Defibrillators, Implantable / Q000009:adverse effects*; D004554:Electric Countershock / Q000009:adverse effects / Q000295:instrumentation; D004556:Electric Injuries / Q000209:etiology*; D004869:Equipment Safety; D006801:Humans