 Blood Loss
I can't see how a 500ml loss of blood could have caused this. In my view the answers are: -
A and 1
He had no history of heart problems, but he was 76. How can you be sure he only lost 500ml during surgery? His Haemoglobin levels were dropping a lot! I think it's more likely the surgeon cut something accidently (this often happens in keyhole) and the guy lost more then 500mls, and that is what caused left ventricular failure and death.
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