Up to 440 patients are waiting on trolleys at hospitals nationwide today.
That is according to the INMO, which found Cork University Hospital is the worst affected with 43 people awaiting a bed.
That is followed by 41 at University Hospital Limerick and 36 at Beaumont Hospital in Dublin.
In all, there are 311 patients on trolleys awaiting admission with a further 129 in overflow wards elsewhere in the hospitals.
Six of those patients are children under the age of 16.