A Comparison of Different Techniques of Two-Dimensional Speckle-Tracking Strain Measurements of Right Ventricular Systolic Function in Patients with Acute Pulmonary Embolism
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Background: Speckle-tracking echocardiography has been applied to measure right ventricular (RV) systolic function invarious diseases. However, variations in strain measurement by different vendors have limited the application of these techniquesfor assessment of RV function. We sought to compare two methods for the assessment of RV systolic function in patients withacute pulmonary embolism (PE). Methods: From August 2007 to May 2011, all consecutive PE patients were prospectively included in this cohort study. Global longitudinal strains of RV measured with EchoPAC PC software (GLSRV-EchoPAC; GE Medical Systems) and velocityvector imaging (GLSRV-VVI; Siemens Medical Systems) were recorded on the same set of echocardiographic images. Results: We analyzed a total of 50 patients (12 males, 68 ± 14 years) with acute PE in this study. GLSRV-EchoPAC andGLSRV-VVI were correlated (r = 0.793, p < 0.001) and they showed significant correlations with conventional echocardiographicparameters of RV systolic function and Log B-type natriuretic peptide (BNP) level. However, GLSRV-VVI only showedsignificant correlations with cardiac biomarkers as serum creatinine kinase-MB (r = 0.367, p = 0.010) and tropoinin-Iconcentrations (r = 0.294, p = 0.040). Conclusion: GLSRV-VVI and GLSRV-EchoPAC showed significant correlations
Abstract
Background: Speckle-tracking echocardiography has been applied to measure right ventricular (RV) systolic function invarious diseases. However, variations in strain measurement by different vendors have limited the application of these techniquesfor assessment of RV function. We sought to compare two methods for the assessment of RV systolic function in patients withacute pulmonary embolism (PE). Methods: From August 2007 to May 2011, all consecutive PE patients were prospectively included in this cohort study. Global longitudinal strains of RV measured with EchoPAC PC software (GLSRV-EchoPAC; GE Medical Systems) and velocityvector imaging (GLSRV-VVI; Siemens Medical Systems) were recorded on the same set of echocardiographic images. Results: We analyzed a total of 50 patients (12 males, 68 ± 14 years) with acute PE in this study. GLSRV-EchoPAC andGLSRV-VVI were correlated (r = 0.793, p < 0.001) and they showed significant correlations with conventional echocardiographicparameters of RV systolic function and Log B-type natriuretic peptide (BNP) level. However, GLSRV-VVI only showedsignificant correlations with cardiac biomarkers as serum creatinine kinase-MB (r = 0.367, p = 0.010) and tropoinin-Iconcentrations (r = 0.294, p = 0.040). Conclusion: GLSRV-VVI and GLSRV-EchoPAC showed significant correlations
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