Journal: Blood Vessels, Thrombosis & Hemostasis
Article Title: Platelet recruitment kinetics are impacted by von Willebrand factor quality in hemostatic adjuncts
doi: 10.1016/j.bvth.2025.100076
Figure Lengend Snippet: Coagulopathic resuscitation model establishment in vitro. (A) Schematics of coagulopathy induction and resuscitation, and subsequent workflow. WB was diluted 3:7 with normal saline to induce dilutional coagulopathy (dWB) or was dosed with 75 ng/mL tPA to induce hyperfibrinolytic coagulopathy (lyWB). Cryo or FibCon was mixed 1:5 with dWB and lyWB, providing resuscitation and yielding r:dWB and r:lyWB, respectively. (B) Microfluidic assay setup schematic. Sample syringe containing resuscitated coagulopathies (rCryo:dWB, rCryo:lyWB, rFibCon:dWB, rFibCon:lyWB) was perfused via syringe pump for constant flow rate perfusion through the microfluidic flow chamber, and chambers were imaged in real time using an inverted fluorescent microscope. Images in panels A and B were created by K.A.T. and S.M.S. using BioRender.com . (C) Computational fluid dynamics simulation yielding flow streamlines through the microfluidic chamber (top). Representative phase images (bottom left) from a WB control at 500 s −1 that resulted in a BT of 4.7 minutes (bottom right). (D) BTs of dWB and lyWB upon perfusion through the microfluidic model of bleeding; assay cutoff of 1200 seconds determined by a quadrupling of the mean of WB controls. Data are reported as mean (standard deviation). N = 2 to 3. PRP, platelet-rich plasma; PPP, platelet-poor plasma; Q, flow; TF, tissue factor; tPA, tissue plasminogen activator.
Article Snippet: Hyperfibrinolytic coagulopathy was not well resuscitated with adjuncts under flow, especially at higher shear rates, in contrast to static assays, in which Cryo rescued lysis better than FibCon (LI60, ROTEM EXTEM ( ; ), consistent with previous reports.
Techniques: In Vitro, Saline, Microscopy, Control, Standard Deviation, Clinical Proteomics