A U.S. federal court judge late Friday blocked an attempt by Sutter Health’s Alta Bates Summit Medical Center to unilaterally impose sweeping cuts on its entire registered nurse workforce that threatened job rights and health coverage for 1,700 RNs in Oakland and Berkeley. U.S. District Court Judge Richard Seeborg issued a temporary restraining order finding that the California Nurses Association/National Nurses United, which brought the request, “has shown that its member nurses are likely to suffer irreparable harm in the absence of preliminary relief,†and that a TRO “is in the public interest.â€