Zsa Zsa Gabor developed an infection that will keep the 93-year-old in hospital indefinitely as she recovers from a broken hip.
Doctors hoped to release Ms Gabor yesterday, but her publicist John Blanchette said an infection changed those plans. He had no further details.
Ms Gabor has been at the UCLA Ronald Reagan Medical Centre in Los Angeles since she broke her hip on July 17 while trying to get into her wheelchair.