RT Journal Article SR Electronic T1 The draw of the few: the challenge of crisis guidelines for extremely scarce resources JF Journal of Medical Ethics JO J Med Ethics FD BMJ Publishing Group Ltd and Institute of Medical Ethics SP medethics-2021-107519 DO 10.1136/medethics-2021-107519 A1 Jacob M Appel YR 2021 UL http://jme.bmj.com/content/early/2021/10/06/medethics-2021-107519.abstract AB The COVID-19 pandemic has focused considerable attention on crisis standards of care (CSCs). Most public CSCs at present are effective tools for allocating scarce but not uncommon resources (like ventilators and dialysis machines). However, a different set of challenges arise with regard to extremely scarce resources (ESRs), where the number of patients in need may exceed the availability of the intervention by magnitudes of hundreds or thousands. Using the allocation of extracorporeal membrane oxygenation machines as a case study, this paper argues for a different set of CSCs specifically for ESRs and explores four principles (transparency, uniformity, equity and impact) that should shape such guidelines.No data are available.