A patient's chance of dying after a heart attack or stroke can vary significantly depending on their hospital, a report by the National Healthcare Quality Reporting System has revealed.
A number of hospitals across Ireland are ranked with much higher mortality rates for heart attack victims than the national average of 5 deaths per 100 patients.
The second highest death rate nationally, within 30 days of admission was found in Portiuncula Hospital in Ballinasloe, where the average death rate from a heart attack per 100 patients is 8.5.
The statistics were compiled between 2016 and 2018.
The lowest rates were reported in Our Lady's Hospital, Navan, and St Luke's Hospital, Kilkenny.
The figures in the annual report of the National Healthcare Quality Reporting System are the nearest the hospital system gets to a league table.
But the report cautions there may be several reasons for the differences.
These include the access to care the patient had before admission to hospital, their overall health, transfer patterns between hospitals and inconsistences in the data.
But the report concludes that the higher than average mortality rates in certain hospitals require further investigation.
Death rates for haemorrhagic stroke were highest in Naas General Hospital, St Luke's Hospital Kilkenny and Galway University Hospital.
Overall, mortality rates for stroke and heart attack victims have decreased year on year over the past 10 years.