I know that a 2 lead the wires are in the right Atrium and right Ventricle to work to maintain a regular heart rate;the 3rd lead is left Ventricle if there's problem or not functioning properly. That's the best I can explain

Do you already have a pacemaker?

I just visited with my cardiologist and because of my cardiac amyloid is going to implant a defibrillator device.

Thanks for the info. I am still interested to hear if anyone has had this done and if they saw any improvement after the change from a 2 lead vice a 3 lead.