Built from ELSO (Extracorporeal Life Support Organization) General Guidelines for ECMO/ECLS, the ELSO Anticoagulation Guideline, and widely used adult VA/VV ECMO teaching references (verified July 2026). Cannula sizing, flow targets, and anticoagulation ranges vary meaningfully between institutions and devices — this tool gives general reference starting points only, not a device-specific or institution-specific protocol. Always follow your ECMO program's own protocol, the perfusionist/ECMO specialist at the bedside, and attending judgement before acting on any value here. ECMO cannulation, flow, and anticoagulation decisions carry major patient-safety stakes.