Gentler method of restoring normal heart rhythm.  High-frequency, alternating current could replace painful defibrillator shocks.
D017147:Defibrillators, Implantable / Q000009:adverse effects* / Q000639:trends; D004554:Electric Countershock / Q000295:instrumentation / Q000379:methods* / Q000639:trends; D006801:Humans; D014693:Ventricular Fibrillation / Q000517:prevention & control / Q000628:therapy*