Mae Ymddiriedolaeth GIG Gwasanaethau Ambiwlans Cymru yn disgwyl y bydd amharu sylweddol ar nifer yr ambiwlansys brys sy’n gallu mynd at gleifion ar ddiwrnodau’r streic.
The Welsh Ambulance Services NHS Trust (WAST) expects the number of emergency ambulances able to attend patients will be significantly affected on strike days.