Cheney's heart condition stable, physical shows

WASHINGTON -- Vice President Dick Cheney's pacemaker is working properly and has not been activated by any irregular heartbeats, according to his annual physical on Saturday that showed his overall heart condition was stable.

The 65-year-old Cheney had an electrocardiogram and imaging to check on repaired aneurysms on the back of his knees, his spokeswoman said.

Doctors also checked the condition of an implantable cardioverter defibrillator, which was placed in his chest in June 2001.

Cheney has had four attacks since 1978.