Probably no. Lots of different sorts of 'heart attack'. My form of VF is basically due to an electrical fault, not due to blocked arteries / clagged up valves,

Probably no. Lots of different sorts of 'heart attack'. My form of VF is basically due to an electrical fault, not due to blocked arteries / clagged up valves, etc. Implantation has some risks (infection, etc) and the device needs to be swapped out every few years when the battery dies. The device can only help if you have a 'shockable' rhythm. It doesn't restart a stopped heart, it causes the out-of-control muscle fibres in a fibrillating (quivering) heart to resynchronise so that you get proper pumping in the heart's chambers. Cost is obviously a factor as well.