@windyshores
ICD refers to Inplanted Cardiac Defibrillator.

Mine will speed up my heart when ventricles goes into tacacardia and if that does not work it will give me an electrical shock to heart. That, at least for me, has worked about a dozen times.

With changes to my pacemaker programming and new medication I have not had any shocks or even elevated pacing for over 6 months. I am knocking on wood when I write this.