Total thrombus formation system exploration of primary hemostasis in cirrhotic patients.

BACKGROUND

Primary hemostasis is impaired in cirrhosis, characterized by thrombocytopenia, platelet dysfunction, elevated von Willebrand Factor (VWF) levels, and reduced a disintegrin-like metalloproteinase with thrombospondin type-1 motifs 13 (ADAMTS13) activity. Current clinical hemostasis tests assess biological parameters individually or use static clot formation models.

OBJECTIVES

We aimed to study thrombus formation in patients with cirrhosis in whole blood under flow conditions with the Total Thrombus Formation Analysis System (T-TAS 01). We also investigated whether synthetic platelet-mimicking nanoparticles (PMNPs) could improve primary hemostatic function in cirrhotic samples.

METHODS

This observational study included 60 participants (30 patients with cirrhosis and 30 controls). All patients underwent blood cell counts, VWF profiling (antigen, activity, propeptide levels, and multimer analysis), ADAMTS13 activity measurement, and T-TAS 01 analysis using collagen-coated PL chips. In cirrhotic samples, T-TAS 01 assays were also performed after adding PMNPs to evaluate their hemostatic efficacy.

RESULTS

Patients with cirrhosis had significantly lower platelet counts (97 vs 218 G/L, P < .0001), higher VWF antigen levels (310% vs 119%, P < .0001), and reduced ADAMTS13 activity (77% vs 100%, P < .01) compared with controls. T-TAS 01 showed prolonged occlusion start time (5:08 vs 2:21 min:sec, P < .0001) and occlusion time (10:00 vs 5:00, P < .0001), with reduced AUC at 10 minutes (96 vs 382, P < .0001). These impairments were more pronounced in patients with higher Child-Pugh scores. PMNPs showed only partial effects on T-TAS 01 parameters.

CONCLUSION

T-TAS 01 effectively detects hemostatic impairment in patients with cirrhosis, which apparently is not compensated by the presence of elevated VWF levels. This approach may therefore serve as a valuable tool for assessing clinical and biological monitoring in patients with cirrhosis.