Barbara Bush in good condition after heart surgery

A concerned George H.W. Bush saluted Houston surgeons and thanked his fellow presidents for their calls Thursday after former first lady Barbara Bush underwent successful open heart surgery to replace her aortic valve.

"I've been a nervous wreck about it," the former president said, choking back tears a day after his wife spent 2 1/2 hours getting a replacement valve from a pig at Houston's Methodist DeBakey Heart & Vascular Center.