"A number of failings" by the NHS in its treatment of a woman who died in hospital have been uncovered.

They came to light after her son complained to Scotland's public services watchdog about the care of his mother at the former Southern General Hospital in Glasgow.

Failings found in the medical care provided to the woman, referred to as Mrs A to maintain her anonymity, included delays by staff when her conditioned worsened.

A report by the Scottish Public Services Ombudsman (SPSO) found she should have been seen by a more experienced doctor when nursing staff raised concerns about her condition.

NHS Greater Glasgow and Clyde launched a major review following Mrs A's death and apologised to her family for the failings.

The watchdog made a number of recommendations to the health board.

Her son, referred to as Mr C, also complained she had not received a "reasonable standard of nursing care" during her time at the hospital.

A number of failings were also found in this regard by the watchdog.

The SPSO report said: "However, these failings had been identified by the board and they had made recommendations to ensure there was learning and improvement.

"They had also apologised to the family for the failings. Finally, Mr C complained that there had been a delay in moving Mrs A to a critical care unit.

"We upheld this complaint as we found that Mrs A should have been moved to the critical care unit at an earlier stage and that the delay in doing so had been unreasonable.

"Although the board had introduced new criteria for medical referrals to the critical care unit, they did not have a written policy in relation to this."

NHS Greater Glasgow and Clyde said it had changed its processes when dealing with critically ill patients since the incident.

A health board spokeswoman stated: "This case refers to a system of care that was in place in 2014.

"The opening of the new Queen Elizabeth University Hospital in 2015 has allowed us to make changes in the way referrals to critical care are made.

"Since receiving the ombudsman's recommendations we have taken further action and have written to the family offering our sincere apologies for the failings in this patient's care and to reiterate our sympathies for the family's loss."