The director of northern Gaza's Kamal Adwan hospital said the lives of more than 100 patients were in danger after electricity, oxygen and water supplies were cut.
Hossam Abu Safiyeh said recent Israeli shelling and bombing had severely damaged the hospital and cut the water and electricity supply to parts of it.
"The outage of electricity and water persists, and we urgently appeal to the international community for assistance," he said.
"The situation is extremely dangerous. We have patients in the intensive care unit and others awaiting surgeries. Access to the operating rooms is only possible after restoring electricity and oxygen supply."
Safiyeh said the hospital currently had 112 wounded patients, including six in intensive care and 14 children.
Continued shelling near the hospital was "preventing us from conducting repairs", he said.
Israel on Friday said it was operating around the facility but had not fired directly on the hospital.
Kamal Adwan is located in Beit Lahia, a city at the centre of an intense Israeli military operation aimed at preventing Hamas from regrouping in northern Gaza.
The hospital is one of the last operational medical facilities in the north of the territory.
The World Health Organisation's representative in the Palestinian territories, Rik Peeperkorn, said on Friday the hospital was operating at a "minimum" level.
The war in Gaza was sparked by Hamas's surprise October 7, 2023 attack on Israel which resulted in the deaths of 1,208 people, mostly civilians, according to an AFP tally based on official figures.
Israel's retaliatory military campaign in Gaza has killed at least 44,708 people, mostly civilians, according to figures from the territory's Hamas-run health ministry which the UN considers reliable.
