University Hospital Galway has said it is under "sustained pressure" as a result of a significant increase in Covid-19 cases, as well as a high number of patients presenting at the emergency department.
Elective procedures have been postponed due to a lack of bed capacity, but the hospital said day case procedures and outpatient clinics are proceeding as normal.
Some 51 patients are being treated for Covid, with three in intensive care.
Outbreaks have been recorded in four wards, while staffing levels have been affected by transmission of the virus in the community.
The hospital said the problems have been compounded by high attendance rates at the emergency department, where more than 200 people presented yesterday.
Management at UHG said every effort is being made to deal with the problems, including asking existing staff to work additional hours.
