Storm Emma will hit services to patients of Laois, Offaly, Kildare and Dublin hospitals into next week, HSE management has warned.
The Dublin Midlands Hospital Group say there will be continued impact on hospitals services over the weekend and into the early part of next week.
The DMHG is responsible for hospitals in Portlaoise, Tullamore, Naas as well as Tallaght, St James', the Coombe and St Lukes in Dublin.
The DMHG says emergency services and all essential planned services for cancer, renal and antenatal care are continuing and staff have been presenting to work to care for patients despite the extraordinary weather conditions affecting access to and access from hospitals.
It says hospitals are prioritising the transportation, through the National Emergency Operations Centre, for key critical staff to maintain emergency services and patient transport for dialysis, oncology and discharges while the adverse conditions persist.
The group says this will be closely monitored through the day and into the weekend and any changes to service provision will be communicated across all available channels.
The DMHG acknowledged the support of the National Ambulance Service, Defence Forces and Civil Defence in assisting with emergency transportation of patients and staff.
As previously stated, hospitals have cancelled electives and outpatient appointments for the past two days. Hospitals will be in touch with patients to reschedule the appointments as soon as possible.
The statement adds that while the national advice is that people can go outdoors it is imperative that people consider the risks of slips, trips and falls. Conditions under foot remain treacherous in many parts of the country. Only walk on sure surfaces that have been gritted.
While emergency departments remain open, people are being encouraged to consider all options available to them for their healthcare needs and to protect the ED for those most seriously ill as delays can still be expected.
The statement sincerely thanks to all the hospital staff who have been staying overnight and everyone who has been making exceptional efforts to get to work to ensure the continuity of patient care.