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Updated: Jul 17, 2026

In Vitro Thrombosis Test for Ventricular Assist Devices
Published on: March 21, 2025
Recurrent device thrombi during mechanical circulatory support with an axial-flow pump is a treatable condition and
Jama Jahanyar1, George P Noon, Michael M Koerner
1Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas 77030, USA. jahanyar@bcm.tmc.edu
Abstract:
The formation of pump thrombus after implantation of axial-flow ventricular assist devices has been described previously. We report a case of recurrent pump thrombus formation in a 63-year-old man who was bridged to heart transplantation with a MicroMed DeBakey ventricular assist device. He was treated with a low, dose-adjusted thrombolytic treatment protocol, and was subsequently successfully bridged to transplantation. Transient pump thrombus formation does not preclude safe long-term support with an axial-flow pump when diagnosed and treated appropriately.
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