Former US President Bill Clinton was released from a Manhattan hospital Friday, four days after undergoing quadruple bypass surgery.

A source familiar with the situation said that Clinton left New York Presbyterian Hospital and headed to his home in Chappaqua.

Clinton, 58, was admitted last Friday after complaining of chest pains and shortness of breath. Doctors found arteries more than 90 percent blocked and said it was likely he would have suffered a major heart attack without the operation.

He is expected to make a full recovery.

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.

The team of surgeons operating on Clinton was led by Dr. Craig Smith, the hospital's chief of cardiothoracic surgery.

Source: Xinhua