I've had the triple artery
bypass, and I should imagine that a quad or quin would be a very similar procedure, just a couple more pipes to stitch in place. You'll need 3 months to even start feeling better after, and your chest will ache as they have to cut the ribcage to get to the heart., you certainly won't want to cough
or sneeze for a few weeks afterwards! You'll also have other parts of the body that will have been cut in order to supply the necessary arteries/veins for the implants. Mine came from my lower left leg, and I have an 18" scar there.