Mayo criteria for extracorporeal membrane oxygenation initiation in coronavirus disease 2019. ARDS, acute respiratory distress syndrome; COVID-19, coronavirus disease 2019; ECMO, extracorporeal membrane oxygenation; EF, ejection fraction; FiO2, fraction of inspired oxygen; NMB, neuromuscular blocker; PaCO2, partial pressure of carbon dioxide within the blood; PBW, patient body weight; PEEP, positive end expiratory pressure; PF, PaO2/FiO2 ratio; R/O, rule out; RESP, respiratory; SaO2, oxygen saturation; SBP, systolic blood pressure; TV, tidal volume; Tx, transplantation; VV, veno-venous. ©2022 Mayo Foundation for Medical Education and Research. Materials and information are current as of February 24, 2022.