Response of Continuous Recombinant Antithrombin Infusion in Postcardiotomy ECMO Patients


About this study

The objective of this study will be to prospectively evaluate the response of a continuous infusion of recombinant human antithrombin concentrate (rhAT) (ATRYN®) to achieve and maintain the AT activity within a specified range in adult patients that require extracorporeal membrane oxygenation (ECMO) following cardiopulmonary bypass (CPB) and cardiac surgery.

Participation eligibility

Participant eligibility includes age, gender, type and stage of disease, and previous treatments or health concerns. Guidelines differ from study to study, and identify who can or cannot participate. If you need assistance understanding the eligibility criteria, please contact the study team.

Inclusion Criteria:

  • Completed cardiac surgery with Cardiopulmonary Bypass and subsequently placed on venoarterial (VA) Extracorporeal Membrane Oxygenation (ECMO) support at any point during the ongoing hospitalization
  • Serum Antithrombin < 60%.

Exclusion Criteria:

  • Heart transplantation during ongoing hospitalization
  • Excessive bleeding (300 ml/hr of chest tube drainage for 2 consecutive hours)
  • Weight < 40 kg
  • Allergy to goat products
  • Anticoagulation with a direct thrombin inhibitor
  • Religious exception to blood products
  • Hypothermia (< 34°C)

Participating Mayo Clinic locations

Study statuses change often. Please contact us for help.

Mayo Clinic Location Status

Rochester, Minn.

Mayo Clinic principal investigator

William Oliver, M.D.

Contact us for the latest status

More information


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Study Results Summary

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Supplemental Study Information

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