Flow characteristics of the drainage cannula in venoarterial extracorporeal membrane oxygenation: a comparison between normal and collapsed vessel conditions.
Saved in:
| Title: | Flow characteristics of the drainage cannula in venoarterial extracorporeal membrane oxygenation: a comparison between normal and collapsed vessel conditions. |
|---|---|
| Authors: | Khamooshi, Mehrdad1,2 (AUTHOR) Mehrdad.khamooshi@qut.edu.au, Wickramarachchi, Avishka1,2 (AUTHOR), Burrell, Aidan J. C.3,4 (AUTHOR), Gregory, Shaun D.1,2 (AUTHOR) |
| Source: | Biomechanics & Modeling in Mechanobiology. Dec2025, Vol. 24 Issue 6, p2275-2283. 9p. |
| Subjects: | Computational fluid dynamics, Blood platelet activation, Medical drainage, Hypercoagulation disorders, Fluid dynamics, Shearing force, Vascular diseases, Artificial blood circulation |
| Abstract: | Venoarterial extracorporeal membrane oxygenation (VA ECMO) is an advanced life-saving therapy for patients with severe cardiopulmonary failure. Understanding the performance of the drainage cannula is critical to minimizing complications such as thrombosis formation, platelet activation, and circuit failure. This study utilizes computational fluid dynamics (CFD) to analyze the flow characteristics within the drainage cannula under both normal vessel conditions and vessel collapse scenarios. The simulations focus on flow behavior, shear stress distribution, and regions prone to platelet accumulation and thrombus formation. In the collapsed vessel scenario, significant alterations in flow patterns were observed, including elevated shear stress, increased velocities near the cannula tip, and flow redistribution along the cannula holes. While the collapsed condition exhibited higher mechanical platelet activation due to increased shear forces, improved washout resulted in a lower accumulation of activated platelets compared to the normal condition. Additionally, thrombosis-prone regions were identified, particularly near the cannula tip for normal drainage condition. The findings of this study highlight the fluid flow mechanisms contributing to thrombosis risk in the drainage cannula during VA ECMO. These insights can inform cannula design improvements to minimize thrombosis and optimize ECMO performance. [ABSTRACT FROM AUTHOR] |
| Copyright of Biomechanics & Modeling in Mechanobiology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
Be the first to leave a comment!
