HOUSTON—A family spokeswoman says former first lady Barbara Bush has been hospitalized in Houston to undergo routine tests, though doctors don't suspect anything serious.

Spokeswoman Jean Becker says the 84-year-old was taken to Methodist Hospital on Saturday. Becker says Bush hasn't been feeling well for about a week, and doctors suggested she "undergo a battery of tests." She declined to provide details.

Becker says Bush is expected to be released in a day or two. She says former President George H.W. Bush drove his wife to the hospital Saturday morning.

Mrs. Bush underwent heart surgery in March 2009, for a severe narrowing of the main heart valve. She also was hospitalized in November 2008, when she underwent surgery perforated ulcer. boston