Response on Rapid Review to Inform Policy Guidance on Welsh Respiratory ECMO Provision.

Internationally, extracorporeal membrane oxygenation (ECMO) is now a core and standard organ support tool to provide tertiary critical care and cardiac services within a network of hospitals and a key tool for running an effective and efficient cardio-respiratory pathways. The letter aims to put the spotlight on some of the missing clinical evidence on respiratory ECMO and including them will help to arrive at a better-informed national ECMO policy decision.