@debmonroe I think you might find that you can successfully retain a lot of your muscle mas and strength by using resistance bands on one limb at a time for multiple repeats. Nothing too crazy. Muscles like to be 'stroked', but they don't need stroking at the previous rate to retain 90% of what they had. If you were powerlifting 40kg, maybe try 20 kg of rubber band/bungee resistance training, while seated if possible to keep the strain on your heart manageable, and see if twice a day for the next 60 days doesn't retain much of what you fear losing. What have you got to lose by foregoing this potentially saving method? More muscle?

I am not a qualified coach, weight lifter, medical practitioner, or lecturer. I do know, from my varied readings, that isometric exercises are great for blood pressure control and for retaining muscle mass and strengthening ligaments and connective tissues. However, they can put a strain on the heart that mere resistance with reps won't normally do.

@debmonroe
I started lifting weights again one week after my ablation ( with my Doctor’s OK). It was fine and I work out pretty aggressively. Good luck!