Basically a very sensitive incubator that regulates heat and oxygen flow for premature babies that otherwise can not survive in the outside world yet. Requires electricity to run.

Really no other way because it requires precision and I believe also has important health monitors builtin.

They died due to low temperatures and a lack of oxygen. We are now using primitive methods to keep them alive,” the director said.

spoiler

My assumption is that they're using blankets, maybe fuel based heaters, and pressurized oxygen at best or a hand pump ventilator at worst.

“We have electricity until the morning. Once electricity is out, these neonates will die just like the others,” Abu Salmiya warned.