[Oliver_W]

Basically there's very little I can do, apart from having the batteries in the ICD changed every 5-8 years! Nothing I do will make it more or less likely to happen, so I have to plod on through life hoping for the best, and not do any strenuous activity which could dislodge it, and not get too close to any magnets which could affect it.

I don't know what to say, having to tell him that, at that age, must have been pretty tough :/

(If you don't know, an ICD is an implantable cardiac defibrillator, aka an internal version of those things doctors shock patients with when they say "one, two, three, CLEAR!")