deadhead,
It is possible to restart a heart that is in asystole using a defibrillator provided other interventions (e.g. intra-cardiac adrenaline, CPR) are also applied...
Asystole is not shockable. If effective CPR is applied and some elctrical activity returns (by definition, the heart is no longer in asystole), then a shock me be of use.
The AEDs used by first-aiders will not recommend a shock for asystole.
ABX
