Sen. John Warner was admitted to a hospital Tuesday to correct an irregular heartbeat, his office said.
Warner, 80, had a procedure to correct an atrial fibrillation at Inova Fairfax Hospital in suburban Virginia, according to a statement issued by his office.
A second, routine procedure will be performed Wednesday, and doctors expect Warner to be home for the weekend and return to work next week, the statement said.
The Virginia Republican announced Aug. 31 that he will not seek a sixth term in 2008. He said at the time that he still felt spry enough to handle the rigors of the Senate but thought it wise not to push it another six years.
Warner's office said the senator came to work Tuesday and handled some appointments before going to the Capitol physician's office. He returned to his office for additional meetings, then left in the afternoon for an appointment at the hospital.
According to the American Heart Association, about 2.2 million Americans have atrial fibrillation, and the chances of getting the heart disorder increase with age.