Portiuncula University Hospital in Galway has postponed planned procedures for this week due to rising Covid-19 cases in the community, along with a number of staff absences due to the virus.
The hospital said this is having a significant impact on services.
Elective procedures for the coming week are being postponed in order to redeploy staff to support essential emergency care.
The hospital said that patients are being contacted directly if their appointment is being postponed.
All day surgeries and endoscopy procedures have been postponed.
Ambulatory gynaecology and other non-theatre day cases are proceeding but remain under review.
The hospital said that patients should confirm that their case is proceeding on the day before it is scheduled using the contact details provided on their appointment notification.
Time sensitive, urgent cases will proceed when it is safe to do them and patients will be contacted if they are to attend.
Out-patient services are proceeding and the situation is being kept under constant review.