[SpookyZalost]

It's less bad than you think. I wouldn't wish it on anybody mind you but modern heart surgery as done here in the states is incredibly advanced. They put you in a short term suspended animation before making their repairs and can do things incredibly precise.

Hell about a decade ago they 3D printed a heart using a cellular printer and stem cells, made each component piece by piece on a biodegradable framework, assembling it as they went. Then installed the new heart and it worked without problems. Afaik the kid has had no complications.

If that's a measurement of where we are in medical technology I wouldn't worry nearly as much.