Master of the National Maternity Hospital Dr Rhona Mahony has said she accepts there was a delay in giving blood to a woman who needed a transfusion following an emergency caesarean section.

Nora Hyland underwent an emergency caesarean at the National Maternity Hospital, Holles Street in Dublin on 12 February 2012.

She suffered a cardiac event three hours after the procedure and died.

Following the procedure, the 31-year-old began to lose blood and doctors became concerned.

The inquest has heard how blood was ordered from the laboratory just after midnight, but what appears to have been a labelling mistake by a lab technician contributed to 37-minute delay in giving a blood transfusion.

Ms Mahony told the inquest today that efforts were being made to stop the bleeding.

She said the situation in theatre was evolving all the time, but admitted that "it would have been beneficial if blood was available earlier".

Ms Hyland's husband Stephen also gave evidence of a meeting with Dr Mahony following the death of his wife.

During that meeting, Mr Hyland said he asked why there had been a delay in the blood transfusion.

He said Dr Mahony told him changes had been introduced at the hospital.

Mr Hyland said she told him that fridges had been installed in all theatres to allow for the storage of blood.

The inquest has been adjourned until Friday 2 May.