Mike Cirba,
With your dad being an ardent golfer, sometimes the biggest impediment to a speedy GOLF recovery depends on the vessels used for grafting.
The saphenous vein is sometimes used when they've run out of mammary veins and the like. After the surgery, many golfers complain, not of chest discomfort, but pain and draining problems with their legs. Your dad's leg or legs may prove to be his biggest impediment to playing golf comfortably, afterwards.
Sometimes, when we explain to surgeons, important elements of our life styles, it assists them in making decisions that will affect us for the rest of our lives. If you haven't done so already, I would suggest that you communicate with the
SURGEON, not their staff, your dad's lifestyle and the important role that golf plays, physically and mentally.
Unfortunately, to a degree, we all have to be are own patient advocates, Good Luck