CHAPPAQUA, N.Y. (AP) – Former President Bill Clinton left the hospital and returned home Friday, four days after undergoing heart bypass surgery, his office said.

The 58-year-old former president arrived early Friday evening at his home in the New York suburb of Chappaqua, according to his spokesman, Jim Kennedy.

“The president is in good spirits and has taken short walks in the hospital hallway and in his home today,” Kennedy said in a prepared statement.

Clinton was taken off his respirator and placed in an intensive care unit on Monday. On Wednesday, he was moved back to his hospital room, where he walked with assistance, sat in his bed and sat up in his chair.

Clinton had planned to campaign for John Kerry, the Democratic nominee for president, but the recovery from surgery will for now take him off the stump – with just eight weeks left until the election.

Doctors performed the four-hour quadruple bypass operation and found that Clinton’s heart disease was extensive, with blockages in some arteries well over 90 percent.

He went to the hospital late last week after complaining of prolonged chest pain and shortness of breath, but doctors revealed Monday that he’d had these symptoms for several months. They said he had blamed them on lapses in his exercise routine and acid reflux.

Clinton has been inundated with thousands of well-wishes and flowers, his foundation has said.

In bypass surgery, doctors remove one or more blood vessels from elsewhere in the body – in Clinton’s case, two arteries from the chest and a vein from the leg – and attach them to arteries serving the heart, detouring around blockages.