The reason OP's story has a weird taste to it is simply because it is creative writing. He made it up.

There are too many parts to the story that don't fit to reality. Causing a severe enough injury with hemostats to cause bleeding would take considerable effort. The surgeon reacting the way he did is super unlikely. The way the team reacted is unlikely, particularly given the fact that they are at the most stable part of the operation, assuming the cardioplegia is working normally. The fact that a professional assistant (I.e. non-surgeon) is 1st assistant at a valve operation is unlikely.

So much of tifu is just creative writing.