Former first lady Barbara Bush is leaving the intensive care unit of the Texas hospital where she had successful heart surgery, according to AP. The 83-year-old wife of former President George H.W. Bush had surgery Thursday to replace her aortic valve at Methodist Hospital in Houston. Hospital spokeswoman Gale Smith said Barbara Bush is expected to be moved out of intensive care on Saturday although she could remain in the hospital for as long as another week. Smith said Barbara Bush was up and walking Saturday morning and was eating and in good spirits.