My condolensces on your illness and hopes for a full recovery.

I too have had a recurrent arrhythmia (atrial fibrillation) as well as what is believed to be a stress related myocardial infarction (fancy lingo for heart attack) a couple years ago due to some profound family disruption and its emotional effects on me. All of this is superimposed on an already malformed heart with a dysfunctional mitral valve, so adding insult to injury. The arrhythmia is no longer a problem, as long as I keep my alcohol intake in relative moderation. But losing 15% of my cardiac function from the MI was significant and remains so in how I tolerate exercise and physical workloads and my body weight.

Not trying to steal your thunder, just commiserating with a kilted brother in trouble. Again hoping for a full and speedy recovery.

Jeff