John Blanchette says Gabor was admitted to Ronald Reagan UCLA Hospital earlier today after a doctor visited her at home, and said she had massive blood clots in her legs, which could make her vulnerable to a heart attack.
The 93-year-old Gabor has been hospitalized several times this year, and asked for a priest to read her last rites in August.
Since summer, Gabor has undergone surgery to remove clots from her upper body and has had a hip replacement surgery.