University Hospital Galway says it is extremely busy with long wait times in the Emergency Department.
As result of high numbers attending the ED, the hospital is postponing some elective procedures, and impacted patients will be contacted.
Urgent and time-sensitive procedures are being prioritised and patients are being contacted directly if their procedure is being postponed.
UHG is advising that patients who attend the emergency department for routine and non-urgent treatment will experience very long waiting times.
Over 400 people attended the Emergency Department over the weekend and additional surge beds have been opened.
People are asked to only attend the ED if it is an emergency situation, and explore other options such as their GP, the Roscommon Injury Unit or out-of-hours service where possible.