The Health Minister has claimed that Sligo University Hospital has recorded a 25% reduction in overcrowding levels.
The figures were measured daily by the HSE.
Health Minister Stephen Donnelly has indicated that there has been a significant improvement in Emergency Departments in the region.
According to figures released by the Department of Health, West and North West hospital Emergency Departments recorded 26% fewer patients waiting on trolleys for the first five months of the year.
It means that there were 3,363 fewer patients waiting on trolleys at 8am across these hospitals compared to the same period last year.