A Russian doctor who was caught on CCTV killing a patient with a single punch has been sentenced to nine years in prison

Dr Ilya Zelendinov can be seen in the footage punching a patient in the head, making him fall to the floor.

The patient, identified as Yebgeniy Bakhtin, had been admitted to the hospital with a gastric haemorrhage on December 29, 2015, reportedly notably intoxicated.

The video was uploaded online and went viral in December 2015, being broadcast on national news. The patient suffered a brain haemorrhage and died after the attack.

In the video, Zelendov can be seen bursting into a hospital room and grabbing the patient, dragging him into another room.

Another man tries to prevent the attack, but Zelendov beats him repeatedly in the stomach before turning round and punching Bakhtin.

Meanwhile Dr Zelendinov continues beating the other man accompanying Mr Vakhtin, and it is only minutes later that the doctor and the nurses notice the patient lying motionless and attempt to revive him.