A Melbourne man has faced court over a fight in a nursing home that left an 89-year-old dementia patient dead.
David Rose, 67, twice assaulted the victim in September 2013, causing a fatal brain bleed, the Supreme Court heard on Tuesday.
He has pleaded guilty to intentionally causing serious injury.
The court heard both men lived at the Doutta Gala nursing home, where Rose received assistance for mobility issues and the victim, a dementia patient, received continuing care.
The victim regularly roamed the halls of the home calling out for his wife, and was doing so at the time of the attacks, crown prosecutor Tom Gyorffy, QC, said.
CCTV footage, which was not played in court because the victim's family were there, captured the victim walking into Rose's bedroom early in the morning on September 28.
When the victim tried to leave with Rose's walking frame Rose flew out of bed in a rage, pulled the victim by his pyjamas and pushed him into a wall and a door, before throwing him into the hallway, Mr Gyorffy said.
That night the victim again walked into Rose's bedroom and tried to take the walker.
"That's when I lost it and I threw him against the wall," Mr Gyorffy read from Rose's police statement.
CCTV footage showed Rose punching and chasing the victim who was taken to hospital in an ambulance where doctors diagnosed a fatal brain bleed.
The victim died on October 26.
In a statement the man's daughter said she told her mother he suffered a fall because the truth would be too much for her to handle.
"His life was taken by a sadistic person whose temper was evil," she said.
Jarrod Williams, counsel for Rose, said Rose suffered significant impulsiveness and personality issues compounded by a head injury suffered in a serious workplace accident, and surgery for two aneurysms.
Mr Rose's son Darren Rose told the court his father had since moved to another facility and was now much calmer and more settled than he had been at Doutta Gala.
Justice Christopher Beale will hear further submissions and sentence Rose at a later date.
