There were more than 50,000 people on hospital trolleys in the first seven months of the year, according to the Irish Nurses and Midwives Organisation.
The latest figures show a record 57,674 patients were admitted for care and left on trolleys so far this year.
The year to date figures confirm that a number of hospitals continue to endure ever-increasing levels of overcrowding including:
University Hospital Limerick 4,782
Cork University Hospital 3,949
University Hospital Galway 3,688
Mater hospital Dublin 3,319
South Tipperary General Hospital 3,100
The figures show in July there was a six per cent reduction in the number on trolleys when compared with July 2016.
The INMO said the year to date figures were a source of great concern as, despite many initiatives, the number of patients admitted and requiring inpatient care who were left on trolleys continues to increase.
It said the reduction in July 2017, when compared with July 2016 was in hospitals outside of Dublin.
Meanwhile, there were 409 patients on trolleys in emergency departments or on wards on Wednesday, waiting for admission to a hospital bed.
The hospital worst affected was University Hospital Limerick, which had 50 patients waiting.
Galway University Hospital had 35 patients waiting for a bed and Waterford University Hospital 30 on Wednesday evening.
The daily average trolley count so far this month is 336 patients a day compared with an average daily count of 299 for the same time this month last year.
The highest number on trolleys recorded on a single day was 612 patients in January this year.