Story updated at 3 p.m. ET.
Power outages across New Jersey, New York and Pennsylvania forced some hospitals to evacuate and others to rely on backup generators in the wake of superstorm Sandy.
The powerful and massive storm, which reached the coast in southern New Jersey around 8 p.m. on Monday, is responsible for at least 35 deaths, the Associated Press reported.
One Manhattan hospital was forced to evacuate 300 patients hours after Sandy's landfall when backup power failed. Evacuation of the New York University Langone Medical Center was complete by late Tuesday morning, a statement from the hospital said.
Meanwhile, plans to evacuate about 200 patients from Coney Island Hospital were underway early Tuesday afternoon, said Evelyn Hernandez, a spokeswoman for New York City Health and Hospitals Corp., which owns the hospital. Backup power was restored on Tuesday to Coney Island Hospital after it lost power during the storm. Most patients who depend on ventilators or other devices were evacuated ahead of the storm, but seven critically ill patients remained at Coney Island Hospital and relied on battery-supported ventilators during the power outage. Those patients were transferred elsewhere Tuesday morning.