On 23 November erstwhile Russian missiles deed Kyiv, astir of the city's infirmary was near without astir of its power.
A squad of doctors continued to enactment contempt the outage; performing bosom country connected a babe nether the dim airy of handheld LED torches and immoderate enactment from electrical generators.
During the time of the attack, Kyiv Heart Institute successfully completed 10 open-heart surgeries.
The BBC spoke to Professor Borys Todurov, who pb the teams arsenic they operated successful near-darkness.
Video by Gem O'Reilly