Gabor's husband, Frederic von Anhalt, told the site that she could "hardly breathe" at their Beverly Hills, Calif., home. Anhalt said he is "really worried we may lose her this time."
This would be the 94-year-old actress' fourth hospitalization this year.
After part of her right leg was amputated in January, Gabor returned to the hospital in February when she suffered a high fever, fluid in her lungs and an infection in her right leg. She was treated earlier this month for poor circulation in her left leg.