An inquest into the death of a five-year-old girl in 2008 has opened in Galway.
Elaine Barrett from Claregalway suffered severe brain damage as a result of a magnesium overdose in her baby feed after she was born prematurely.
The German pharmaceutical company, B Braun Medical Ltd, admitted human and technical error in the manufacturing of the product and apologised in court to the parents of the girl.
In a statement read out at the opening of the inquest, Frank Barrett said he and his wife Eileen bore no ill-will against staff at Galway University Hospital where the wrong dose of nutrition was administered to their baby daughter.
However, the family are asking Braun why it took seven years to find out how the mistake was made.
In April 2003, Elaine Barrett was delivered at 26 weeks by emergency section at the National Maternity Hospital in Dublin.
The baby was 1lb 4oz and she was put on a special nutrition supplement called Total Parental Nutrition Feed.
Two weeks later, the baby was transferred back to Galway where she made good progress on breast milk fed through a tube.
However, her condition deteriorated when she developed an infection and Elaine was put on the TPN feed again.
Her condition worsened and tests revealed she had received dangerously high levels of magnesium.
Consultant Paedriatician at UHG, Dr Kevin Dunne, said Elaine Barrett had been administered levels of magnesium 120 times greater than her normal dose. She suffered severe brain damage as a result.
Her parents took her home where she had frequent seizures and was admitted to hospital 18 times before she died in October 2008 at the age of five.
Paul Mullally of B Braun Medical admitted that a mistake had been made as a result of human and technical error.
He explained how an interruption in the production process together with a change in personnel had resulted in an adult dosage being pumped unintentionally into a baby pack.
He said the parents had not requested that information until now but he offered a full apology on the part of the company.
The inquest continues tomorrow.
