An Echocardiogram? They call it, also, if the right one, an Echo. It is like an ultra sound of the heart. It is painless Ian.
...and, tell your wife, that you couldn't be Robin Hood, if you didn't have a heart, you give to the poor.
I will cross my fingers too, all 8 that is left, lol.
P.s. You will be fine. No worries. You will see.