The Correlation between the Right Ventricular Strain and the Severity of Right Coronary Artery Lesions in Patients with Stable Coronary Artery Disease

Abstract

Background A recent study demonstrated that in patients with stable coronary artery disease who were indicated for coronary angiography and it resulted in single proximal RCA significant lesion and 2D echocardiography was normal, speckle tracking on RV free wall detected significant impact on its segments and its global strain. Aim of the Work: To correlate between the RV strain and the degree of RCA stenosis in patients with stable Angina.Methods: a prospective observational study done included large number of persons complaining of typical anginal pain indicated for coronary angiography. Conventional 2D TTE was done and we excluded patients with RV dysfunction or RV dilatation. Speckle tracking on RV was done before doing coronary angiography. Patients with single ostial, para ostial or proximal dominant RCA lesions were chose to correlate their degree of stenosis with right ventricular free wall and RV global strain speckle tracking. Also, control group with normal speckle tracking and normal coronary angiography was taken in the study. Data was collected & coded using Microsoft Office Excel Worksheet while statistical analysis was performed using statistical package for social sciences (SPSS) version 
Results: The study showed that regarding the Echocardiographyparameters, there were statistically significant difference between the 2 groups regarding the B RVFW, MRVFW, APRVFW and GLsRV.
Significant relation was detected between degree of the proximal RCA stenotic lesion and speckle tracking parameters of RVFW and GLsRV.
Conclusion: RVFWLS and GLsRV has highly significant correlation with the degree of the proximal stenotic lesion.