Just trying to write some more about the surgery as I've just finished watching the rest of it, but for some reason my message is marked as spam even though there is not one link in it nor one profanity. So I'll try and break the message up and see what happens. There were some particularly interesting thins which were explained.
The colour of the heart is mostly yellow.That is fat and is perfectly normal, it helps with the heart’s metabolism and insulates and cushions it aginst movement.
They keep giving cardioplegia around every 20 minutes during bypass as the heart is determined to pump, it would pump even if taken out of the body and put in a petri dish ! So the cardioplegia stops it by changing the chemical balance. They also use slush (slushed ice) to cool the heart so it won’t beat, they just literally place some slush onto the heart.
When they put the new valve in place, after the sutures are all sewn in place, the valve is parachuted, that’s the expression they use, down the lines of sutures. The sutures holding the valve in place and the sutures used to close the aorta stay there permanently, they do not dissolve.
