C-18 | Novel CT-derived Parameter for Risk Stratification in Patients with Acute Pulmonary Embolism

• DOI: 10.1016/j.jscai.2022.100170
• Publication Date: 2022-05-19T08:16:10Z
• Authors: Parth Shah; David Sutherland; Matthew Collins; Elizabeth Bruno; Mit Patel; Karim Merchant; Mina Mehanni; Kevin Walsh; Parth Desai; Mark Mujer; Yevgeniy Brailovsky; Alex Marginean; Ahmed Elkaryoni; Jawed Fareed; Amir Darki
• Keywords: Hounsfield scale; Risk Stratification; Ventricular outflow tract

BackgroundRisk stratification models for acute pulmonary embolism (PE) lack positive predictive value to identify patients at highest risk of early PE-related mortality. Tricuspid Annular Plane Systolic Excursion (TAPSE) and tissue doppler (S') from echocardiogram are validated metrics RV function. Computed tomography angiography (CTA) derived Hounsfield Unit (HU) gradient has been shown be a surrogate cardiac index in PE. Our study examined HU aid stratifying the PE population.MethodsWe retrospectively studied Response Team Registry whom CTA was performed. Mean values were obtained main artery 3 cm bifurcation left atrium level mitral valve (Figure 1D). calculated by subtracting absolute values. Correlation analysis performed between right ventricular outflow tract velocity time integral (RVOT VTI), TAPSE, S'.ResultsA total 514 analyzed. Increasing gradients correlated with decreasing RVOT VTI (R = -0.51, P < 0.001), TAPSE -0.49, S' -0.48, 0.001) 1). that correlate severity as follows - low (n 158): 98.24 ± 61.16, submassive 319): 137.7 72.6, massive 37): 167.2 85.5 (p .01).ConclusionsDisclosuresP. Shah Nothing disclose. D. Sutherland M. Collins E. Bruno Patel K. Merchant Mehanni Walsh P. Desai Mujer Y. Brailovsky A. Marginean Elkaryoni J. Fareed Darki population. Risk MethodsWe S'. We ResultsA .01). A Conclusions DisclosuresP.