At least, that's what the farmer/part-time cardiac surgeon said. He has now "discharged me from his care". I have had all the followup tests (plus a few extra), and so that is basically it. My heart is now as normal as it's going to be (permanent arrhythmia and a plastic ring around the valve notwithstanding). Shame my shoulder/arm is still a bit fookt, and I now have dizzy spells my GP and cardiologist (and apparently the renowned dairy farmer/ hobby surgeon) are stumped by. I guess you can't ...