A man jailed for beating his partner so badly she died told paramedics she'd fallen off the toilet in the Brisbane caravan they shared.

Nathan Rodney O'Malley, 40, was sentenced to 11 years' jail for the manslaughter of 41-year-old Olivia Tung at an Eight Mile Plains caravan park.

Paramedics who responded to O'Malley's triple zero call found Ms Tung lying without pants inside the caravan the couple shared after he kneed her in the back and stomach on March 17, 2016.

The Brisbane Supreme Court was told O'Malley tried to cover up what he'd done by giving Ms Tung morphine and telling paramedics and police she had fallen off the loo.

A court sketch of Nathan O'Malley from a previous court appearance. (9NEWS)

He even re-enacted his version of events when authorities walked him through the crime scene.

Ms Tung was taken to hospital where she died after suffering injuries to her liver, face and head at a time when she was still healing from fractures to her ribs, sternum and lower back.

"This was not the first occasion on which you had inflicted violence on your partner," Justice David Boddice said.

"In my view your conduct properly is to be described as involving a brutal, unprovoked attack on a slight, vulnerable woman.

"Your actions then demonstrated a complete disregard for her; it also indicated a lack of remorse."

The Eight Mile Plains caravan park where Olivia Tung was killed. (9NEWS)

Ms Tung was found lying without pants inside the caravan the couple shared. (9NEWS)

The court was told Ms Tung had lost a significant amount of weight and was seen with bruises on her face prior to her death, which occurred a year after O'Malley was convicted of assaulting a previous partner.

During his sentencing O'Malley told the court: "I do take full responsibility of my actions, I don't blame anyone."

He must serve 80 percent of his sentence in jail before applying for parole.

National Domestic Violence Service: 1800 RESPECT (1800 737 732). If you are in immediate danger call triple zero (000).