Washington (CNN) - Former Vice President Dick Cheney was "feeling good" a day after being hospitalized with chest pains, a source who spoke to Cheney said Tuesday.
The source told CNN the former vice president watched some of the Olympics Games coverage on television Monday night, hours after being admitted to George Washington University Hospital, but was in a "holding pattern" until more tests were conducted Tuesday morning.
A family source told CNN that Cheney's doctors were evaluating his situation, and another source said Cheney, 69, is up and in touch with his family and friends.
CNN's chief medical correspondent Sanjay Gupta called Cheney's mobility "a good sign."
"If he's up and walking around, talking to friends ... that probably means he's not in the intensive care unit," he said. "They're not doing active procedures on his heart. He's not on a breathing machine or anything like that. No one ever said he was. It's obviously a good sign."
Cheney has a long history of heart problems. He has suffered four heart attacks dating to 1978, when he was 37. He suffered his second in 1984 and a third in 1988 before undergoing quadruple bypass surgery to unblock his arteries. His fourth heart attack occurred in November 2000, after he became vice president. At that time, doctors inserted a stent to open an artery.
Doctors in 2001 implanted a heart monitoring device to keep track of his heart rhythm and slow it down if necessary. In 2008, he underwent a procedure to restore his heart to a normal rhythm after doctors found he was experiencing a recurrence of atrial fibrillation.
Cheney served under former President George W. Bush from 2001-2009. He has been a vocal critic of the current administration since he left office, most recently appearing on ABC's "This Week" where he railed against President Barack Obama's policies on terror and the Iraq war.
He has accused the Obama administration of failing to treat the fight against terrorists as war, citing the decision to give accused 9/11-mastermind Khalid Sheikh Mohammed a civilian trial, giving the failed Christmas Day airline bomber the privileges of the U.S. criminal justice system, and the decision to shut down the U.S. military prison at Guantanamo Bay, Cuba.
Cheney also served in the administrations of former Presidents Richard Nixon, Gerald Ford and George H.W. Bush.
–CNN's John King contributed to this report.