The intensive care unit in the Mater Hospital in Dublin is full.
A consultant at the hospital says most of the patients in the 18 ICU beds have been admitted with COVID-19 related illnesses.
Patients who have been ventilated are being removed to the High Dependency Unit (HDU) and other wards are also being made available for critically ill patients.
Dr John Lambert, a consultant in infectious diseases at the Mater, said they have a contingency plans to have non-ICU beds in non-ICU facilities.
He told The Pat Kenny Show: "We've slowly gone from two to seven to eight to fully-booked at the current time.
"We're providing ICU care in the non-ICU facility, and if that gets filled up we have contingency plans.
"The point is we are seeing more patients being admitted to ICU, so we're not over the worst yet."
The most recent data showed that 194 people in Ireland had been admitted to intensive care with COVID-19 symptoms as of midnight on Sunday.
Over 65% of those admitted to the ICU have been over the age of 55, while a quarter are between the ages of 45 and 55.
