Standards of care during a crisis is the topic of a newly released pre-publication report by the Institute of Medicine. Crisis Standards of Care: A Toolkit for Indicators and Triggers, National Academies Press, 2013, is a free 217 page, 2.7 MB download.
“This report focuses on indicators (measurements or predictors of change in demand for health care services or availability of resources) and triggers (decision points about adaptations to health care service delivery) that guide operational decision making about providing care during public health and medical emergencies and disasters. It includes a discussion toolkit designed to facilitate discussions about indicators and triggers within and across health care organizations, health care coalitions, emergency response agencies, and jurisdictions." p.xi
This and related documents are included in the Resource Guide database at DIMRC, the Disaster Information Management Research Center.