Yep. It has nothing to do with "sleeping on the floor." That does not cause complications from heart surgery. Has anybody ever had their doctor tell them, after surgery: "do not lift anything over 5 pounds and do not, under any circumstances, sleep on the floor!"
Remember those three side trips he took when he was in Asia? To Japan, Taiwan, and South Korea? Maybe Hong Kong was in there, too? That's not close to the tsunami victims, and it was pressure on top of an already difficult trip. Just to do more book signings at $900 a pop per book. That wasn't very smart of him, especially when he already wasn't looking so hot.
He pushed it too far with that international travel agenda.
Agreed.
He wanted (wants) to be liked and loved and well-thought of, even in post-Presidency.
His trademark media granstanding and constant need for attention and validation by others, could just be the cause of an early demise.
After they fix him this time and sew him up, they need to go to work on the part from the neck up, deep/serious pscyho-counseling, IMHO.