ELSO Adult ECMO Certification Exam

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A patient on VA ECMO is managed with a continuous unfractionated heparin (UFH) infusion. The primary laboratory test that directly measures the functional effect of UFH by quantifying its inhibition of a specific clotting factor is the:

Activated Clotting Time (ACT) Prothrombin Time (PT/INR) Anti-Factor Xa assay Activated Partial Thromboplastin Time (aPTT)

Correct Answer:

Anti-Factor Xa assay

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