An Adelaide aged care worker who bashed an elderly resident at a nursing home has been jailed for a year. Michael Mullen, 52, was found guilty of the aggravated assault of 72-year-old Elizabeth Hannaford in November 2015. The attack took place while Mullen was working a night shift at Southern Cross Care’s Lourdes Valley nursing home at Myrtle Bank. In victim impact statements read before sentencing, Ms Hannaford’s daughter, Joanna Warde, said her mother deteriorated after the assault.