HONOLULU (AP) _ Ousted Philippine President Ferdinand Marcos was ''very, very weak'' and placed on a respirator Wednesday after emergency surgery, and his ''exhausted'' wife was hospitalized after she fainted, officials said.

Marcos, 71, was having increasing respiratory problems as a result of fluids building up in his lungs, and underwent a tracheostomy early Wednesday, Miller said. He was returned to the ICU following the procedure, and is back on a respirator, Miller said.

Mrs. Marcos, 59, fell and hit her head when she fainted, but her injury was not serious, Miller said. She was admitted for observation and is in satisfactory condition, Miller said.

''She was exhausted, she's gone several days without sleep, and then knowing what they were doing to the president, she just passed out,'' said Marcos spokesman Gemmo Trinidad, adding that he expected Mrs. Marcos to be hospitalized for one or two days.

An aide who answered the phone in her hospital room said Mrs. Marcos was resting comfortably but unable to take calls.

Marcos was admitted to the hospital on Jan. 15 for treatment of pneumonia and bronchial asthma. In December, he was hospitalized twice for treatment of congestive heart failure.

A federal judge is to decide later this month in New York whether Marcos is healthy enough to stand trial on criminal racketeering charges accusing him of plundering his homeland's economy and stashing much of the money in the United States. Mrs. Marcos pleaded innocent to the charges and is free on $5 million bail.