The Health Service Executive has reversed a decision to transfer the public health nurse on Arranmore Island to the mainland.
The full-time nurse has been told that she will not be moving to the mainland tomorrow as planned.
Islanders expressed serious concerns at the implications of the cut in the service, which has been available on Arranmore since 1907.
Island representatives expressed delight at the news.
In a statement, the HSE said: "Following local concerns the Director of Public Health Nursing has reviewed the position and decided to maintain existing arrangements on the Island.
"A full Public Health Nursing service will therefore be maintained on Arranmore."
Islanders have thanked the HSE for being aware of what they described as "the unique situation that exists on Arranmore Island".
The committee set up on Saturday night to fight for the retention of the full-time Public Health Nurse service said it now plans to meet the HSE with the intention of ring-fencing the service.
It aims to make sure that the people of Arranmore will always retain a full-time PHN and "a full-time healthcare service based on the island as good as the best service available anywhere else in Ireland".