The patient - a woman in her 60s - was operated on because of a narrowing of the trachea and suffered a burn injury, according to a Lex Maria report the hospital made to the Inspectorate for Health and Care. The injuries made her need a cannula in her throat to breathe.

When the woman was to be transported to the home hospital a week later, problems arose with getting a new cannula in place. The woman needed a time of heart and lung rescue to get free airway. She suffered double-sided lung collapse in connection with the incident, but recovered from brain damage.

The surgery where the burn occurred occurred in late August and the woman is breathing through cannula today. The prognosis for the woman is uncertain in the longer term, according to the hospital.

"A human mistake"

The University Hospital has investigated the incident internally and concluded that it was the human factor behind the tragic event.

- You must not add extra oxygen to a laser treatment. But in this case, the controls were wrong. What has happened is a human mistake and extremely unusual, something that I am the first to complain about, says chief medical officer Lena Nilsson.

What have you done to make it not happen again?

- We have informed all staff about what has happened and sharpened the procedures before starting a laser treatment.