605 admitted patients were waiting for beds on Thursday morning, according to the Irish Nurses and Midwives Organisation (INMO).
The INMO Trolley Watch showed that 381 patients were waiting in emergency departments, while 224 waited in wards elsewhere in hospitals.
110 admitted patients were waiting for a bed at University Hospital Limerick. 52 were waiting in the emergency department, while 58 waited in wards elsewhere in the hospital.
At Cork University Hospital, 76 patients were waiting for beds on Thursday morning.
61 patients were waiting for beds at University Hospital Galway, while 40 waited at Sligo University Hospital.
The three children's hospitals had 15 patients waiting for beds between them, with 10 waiting at Our Lady's Children's Hospital, Crumlin.
31 patients were waiting for beds at Tallaght University Hospital, 26 waited at Beaumont Hospital, and 25 waited at St Vincent's University Hospital.