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 WASHINGTON (AP) - Vice President Dick Cheney, who has a history of heart problems, had surgery Saturday to replace an implanted device that monitors his heartbeat.
Doctors at George Washington University Hospital replaced the defibrillator, a sealed unit that includes a battery. If the device were to sense an abnormal heart rhythm, it would deliver an electronic shock to reset the vice president's heart to a normal beat.
"The device was successfully replaced without complication," said Megan McGinn, the vice president's deputy press secretary.
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