Zsa Zsa Gabor was taken by ambulance to Ronald Reagan UCLA Medical Center Tuesday, her publicist said.
According to Gabor's husband, Prince Frederic Von Anhalt, she was having difficulty breathing and was spitting up blood.
The 94-year-old actress has been bedridden at her home and eating through a feeding tube.
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"We don't expect her to get better," Frederic Prinz von Anhalt told The Associated Press earlier this month. "She will be in bed for the rest of her life."
John Blanchette, Zsa Zsa Gabor’s publicist said Tuesday night, “Zsa Zsa is resting in the hospital and will remain overnight.”
Gabor has been in and out of the hospital since requiring surgery in July after falling out of bed and breaking her hip.
After her right leg was amputated in January because of gangrene, the original “Moulin Rouge” star refused to have her other leg amputated earlier this month when her blood stopped flowing.
Gabor's left leg has since responded to medication at home, her publicist told the AP.
Gabor is the last living of three Gabor sisters with careers in Hollywood. The legendary screen star has been equally famous for having been married nine times.