Sligo University Hospital is the worst effected hospital in the region today.
There are 31 patients waiting on trolleys in the Emergency Department and 7 on other wards according to the Irish Nurses and Midwives Organisation.
Letterkenny University Hospital is the second worst in the region with 26 patients waiting on beds across the hospital.
583 patients waiting on trolleys at hospital across the country today, with Limerick the worse affected at 56.