There are 471 admitted patients waiting for beds on Tuesday morning, according to INMO's Trolley Watch.
There are 380 patients waiting in the emergency department, while 91 are in wards elsewhere in the hospital.
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The worst impacted hospital is University Hospital Limerick with 106 on trollies this morning.
That is followed by University Hospital Galway with 43 people waiting for beds and Cork University Hospital with 40 people on trollies.