3 post after bypass-thank god she doing better

well they did the scan and there was not clot in the loung, guess sometimes it takes a little longer to recover for those 80 and over. they took the breathing tube out. now mom is doing some therepy. there is some concern still about her blood o2 level so they are monitoring her closer and she is practicing with the spiro meter. She is also getting treatment with a nebulizer and med to open her lungs up, she had some ice cream, good signs of improvement. I spoke with my sister inlaw who took mom for all the echo says she met the criteria of 70 percent blockages, I never like the idea of this surgery and from what i read not so sure if there is any factual evidence that the surgery increased longevity or medicare would not be paying to do a study on the Dean Ornish diet verses by pass on 2000 patients. I guess we have to wait to see how mom does over the next couple of months. I can't help wonder if the reason the doctor never did the valve replacement was based on that the valve was really not that bad or the the risk became to great when mom had irregular heart when they were perfoming the surgery, but at least the tripple by pass was completed. thank you gain for your imput