Mum died after kidney op blunder at Coventry hospital
A mother-of-three died following an operation to remove a kidney tumour after her vital arteries were clamped in error, an inquest has been told.
Deborah O'Hara underwent surgery to remove the 8.7in (22cm) tumour at Coventry's University Hospital.
A clip was inadvertently placed on one of her arteries which led to a lack of blood to vital organs. She died two days later.
Bosses apologised after her family learnt about the mistake from the BBC.
Experienced surgeon Anthony Blacker told the inquest in Coventry on Wednesday it was a complicated operation over six hours and when the tumour was removed she lost five litres of blood.
In a bid to save her life, four clamps were placed on her arteries but the move cut off the blood supply to her bowel and she died.
The hearing was told the case had sent "shockwaves" throughout the hospital trust with some complex cases now being dealt with by other departments.
University Hospitals Coventry and Warwickshire NHS Trust previously apologised to Mrs O'Hara's family after failing to tell them about the error.
An internal investigation has been carried out.
The hearing continues.