UHG is under pressure today, with 74 patients on trolleys.
It's the second most overcrowded facility in the country, according to the Irish Nurses and Midwives Organisation.
The most overcrowded hospital is University Hospital Limerick, where 88 people are waiting for a bed.
Across the country 530 patients are on trolleys.
At Portiuncula Hospital in Ballinasloe there are 3 admitted patients waiting for a bed.