Saw the video.
The patient was grabbed and ejected from the room. It was then the patient’s friend attacked the doctor. The doctor was knocking the poo out of the patient’s friend when the patient came back in the room and started to advance on the doctor, to attack him.
One punch from the doc and the patient was down and dead.
The patient’s friend took the beating and when the beating was over, was walking around, very much alive.
You’re very observant. The whole thing happened so quickly, I found it hard to see who was doing what. It was like a Clown Car of fist fights.