“…The main limitation is that the indications for ECLS in trauma are still considered relatively rare, even in Level 1 trauma centres. 3 The case series may have been biased by patient selection and may have been too small to support recommendations or real conclusions. 4 The only way to make evidence-based recommendations is to use data from registries, such as the ELSO Registry and the newly developed Trauma Addendum, to draw conclusions that support the recommendations.…”