Galway Bay fm newsroom - UHG was the third most overcrowded hospital in the country last month.
728 patients were waiting for a bed during January.
Meanwhile, 417 patients were waiting on trolleys at Portiuncula Hospital - the worst January on record for the Ballinasloe hospital.
11,289 people were recorded on hospital trolleys since January 1st
That's up 2 and half thousand on the same time last year.
University Hospital Limerick continues to be the worst affected by over-crowding, accounting for 10 per cent of the overall figure, at 1,180.
Cork, Galway, Letterkenny, and St. Vincent's in Dublin make up the top five - totalling of over 3,000.
That's in stark contrast with the bottom five - Tullamore, Portlaoise, the National Children's Hospital, Connolly Hospital, and Waterford - with a combined total of 213.
The INMO says, "a lack of adequate planning has put unnecessary stress on nurses and the patients", describing January's figures as "unacceptably high".
