With Kaiser Permanente registered nurses stepping up their alarm about the erosion of patient care standards, Kaiser officials Thursday once again failed to attend a planned collective bargaining session with RN nurse negotiators. Kaiser refused to join talks today even though the RNs went to a site for negotiations, at an Oakland hotel, that Kaiser had proposed, the California Nurses Association, National Nurses United, which represents 18,000 Kaiser RNs at 21 hospitals and 66 clinics announced.