Biological and Clinical Relevance of Quantra Viscoelastic Hemostatic Assay in Hemorrhagic Cardiac Surgery

The goal of this observational study is to assess the correlation between Quantra viscoelastometric assay and laboratory hemostasis biology in a cardiac surgery cohort presenting with acute hemorrhage in the operating room. The main questions it aims to answer are: * is Quantra a valuable surrogate for hemostasis biology in the setting of bleeding cardiac surgery? * are Quantra parameters well correlated with tranfusion thresholds in the setting of bleeding cardiac surgery?

NCT Number	NCT07105904
Lead Sponsor	Pitié-Salpêtrière Hospital
Conditions	Hemorrhage, Cardiac Surgery, Hemorrhagic Shock
Enrollment	600 participants
Start Date	2025-07-10
Primary Completion	2026-02-15 (estimated)
Study Completion	2026-03-15 (estimated)
Updated on ClinicalTrials.gov	2026-04-20