It will take a good 2-3 months for the person to start feeling better, and even up to a year for complete healing and strength to return. Do what your doctor says, get plenty of rest, and do the therapy the doctor recommends.
It is has been five months since my surgery I still suffer w pain in and around my chest. Help
It greatly depends on the quality of work from the doctors. People have started to realize the advantages a robot can have because its end pieces can be very small, much smaller than the human hand. Thus they need a smaller initial cut to get in. Here is an example of what I think is the future of heart bypass surgery, Robotic Heart Bypass