Shocking footage has emerged of a Russian anaesthetist punching a helpless heart patient as he lay strapped to a bed in intensive care.
Andrey Votyakov is seen hitting the man in the face and punching him in the chest while he is strapped to a bed.
The man later died at the Federal Centre for Cardiovascular Surgery in Perm, a city in the Urals, although his death is not believed to be linked to the attack.
The highly-regarded anaesthetist said he had punched the man when tired after a 36-hour shift.
The doctor became angry after the patient started abusing him.
According to reports Votyakov told Russian media: "As soon as I came into the room with my team he started to call me various derogative names. And I just got blown away by it.
"We had spent so much time with his very complicated case to help him recover and he said not a single word of gratitude.
"And then the chronic tiredness added to it. I got carried away, and I punched him several times at the presence of my colleagues.
"We continued the treatment after the incident, but sadly the patient died.
"I am very sorry for what happened and I want to apologise first of all to the patient himself and his family."