Charlottesville, VA – May 19, 2016– HemoSonics today announced two upcoming presentations of data at the International Anesthesia Research Society (IARS) Annual Meeting May 21-24, 2016 in San Francisco, CA demonstrating the clinical utility of the Quantra™ Hemostasis Analyzer in monitoring patients undergoing cardiac and complex spine surgeries.
The two studies conducted at the University of Virginia in Charlottesville, VA compared results obtained with research versions of the Quantra, a novel ultrasound-based device that uses Sonic Estimation of Elasticity via Resonance (SEER) Sonorheometry to measure the viscoelastic properties of blood, to equivalent rotational thromboelastometery (ROTEM™) and conventional laboratory parameters.
The abstract “Comparison of SEER Sonorheometry with Rotational Thromboelastometry and Laboratory Parameters in Cardiac Surgery” authored by Dr. Julie Huffmyer and Dr. Danja Groves showed a strong correlation between Quantra and ROTEM parameters for clot stiffness and fibrinogen contribution in 55 patients undergoing elective cardiac surgery with cardiopulmonary bypass (CPB) (r=0.7-0.9). The Quantra platelet contribution, which reflects both platelet count and function, was well-correlated with the ROTEM platelet parameter but moderately correlated with the laboratory-determined platelet count, underscoring the limits of platelet count and the importance of a comprehensive measure of platelet function in the assessment of coagulation status in CPB patients whose platelet function may be compromised as a result of the procedure and preoperative anti-platelet therapy.
Similarly, in the abstract “SEER Sonorheometry versus Rotational Thromboelastometry in Large Volume Blood Loss Spine Surgery”, Dr. Bhiken Naik and co-authors showed a strong correlation between Quantra and ROTEM for determining clot stiffness and assessing fibrinogen and platelet contribution to clot stiffness in 51 patients undergoing multi-level spine surgery. This abstract highlighted the Quantra’s ability to provide a direct measure of clot elasticity, eliminating the need for post-processing mathematical transformation of clot amplitude values to shear elasticity.