I may not know you well but I have experienced surgery before and it really stinks when you can't do anything. From the look of things, your surgery appears much more serious and possibly life-threatening. I don't know how much help it can be but I wish you all the best and good luck with the surgery. It would be saddening if you didn't come back so I hope that it doesn't happen.
Come back to us in one piece and better than ever. We will wait for your return.