Abertawe Bro Morgannwg University Health Board says it "strives to continually improve" the care it offers vulnerable patients.
It says the ward in which Mr was treated has now been replaced by a purpose-built dementia unit, and that the hospital now has "better mechanisms in place to assess and serve patients' nutritional needs".
We would like once again to offer our most sincere condolences to the family of this patient for their sad loss; and to apologise for the shortcomings in important aspects of care this patient received, which we acknowledge fell well below the high standards expected.
We would like to give assurances that there have been major changes since the time this patient was an inpatient at Cefn Coed Hospital, particularly around pressure ulcer prevention.
Pressure sores are not acceptable, and in almost all cases they are avoidable. Our clinicians have been determined to find ways to greatly reduce the risk of patients developing pressure ulcers, and in 2008 we began a major programme developing interventions to prevent pressure ulcers.
We successfully piloted this early work in 2009, in a small number of acute wards. They are now in use at all our hospitals, where nine wards have prevented patients developing any pressure ulcers for over three years; and a further seven wards have stopped pressure ulcers for over two years.
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Hollie Kerrell, 28, was last seen in Knighton on Sunday 22 April. A 35-year-old man has been arrested on suspicion of murder.