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A Microfluidic Flow Chamber Model for Platelet Transfusion and Hemostasis Measures Platelet Deposition and Fibrin Formation in Real-time
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Published on: February 14, 2017

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Transient blood thinning during extracorporeal blood purification via the inactivation of coagulation factors by

Xin Song1, Haifeng Ji1, Yupei Li2,3

  • 1College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, China.

Nature Biomedical Engineering
|January 26, 2021
PubMed

During extracorporeal blood purification, anticoagulants are administered to prevent thrombogenesis. However, haemorrhagic complications owing to near-complete inactivation of blood coagulation and delayed recovery of haemostasis pose serious risks to patients. Here, we show in vitro and in beagle dogs that hydrogel microspheres that adsorb the coagulation factors VIII, IX and XI provide transient blood thinning when placed in the extracorporeal circuit before blood purification. The microspheres inhibited the activities of the coagulation factors by levels (~8-30%) similar to those occurring in mild haemophilia. On its reintroduction into the animal, the purified pseudo-haemophilic blood favoured faster recovery of haemostasis. The transient blood-thinning strategy may increase the safety of clinical blood-purification procedures.

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