WASHINGTON (AP) -- Doctors are evaluating former vice president Dick Cheney's heart after he experienced chest pains Monday.

An assistant says Cheney is resting comfortably at George Washington University Hospital. It's in Washington.

Cheney has a history of heart problems, including four heart attacks starting at age 37. He has also undergone bypass surgery, angioplasties to clear narrowed arteries and electric shocks to restore normal heart rhythm..

Cheney, who is 69, has maintained a high profile since leaving office. He's offered regular criticism of the Obama administration.

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