RESUMO
PURPOSE: The purpose of this study was to test whether the fractional change in the endocardial border length between end-diastole and end-systole as manually traced in left ventricular ejection fraction (LVEF) measurement using the biplane method of disks (MOD) was consistent with the global longitudinal strain derived from speckle-tracking echocardiography. METHODS: For 105 patients who underwent echocardiography, two- and four-chamber images with manually traced endocardial lines for LVEF measurement by MOD were stored. LV endocardial lengths at end-diastole and at end-systole were measured on both images to calculate the fractional length changes, which were averaged (GLSMOD). Speckle-tracking analysis was performed to measure global longitudinal strains in the apical two- and four-chamber and long-axis images, and the three values were averaged (GLSSTE) according to the ASE and EACVI guidelines. RESULTS: There was no significant difference between GLSMOD and GLSSTE. GLSMOD correlated well with GLSSTE (r = 0.81, p < 0.001), and there was no fixed bias in the Bland-Altman analysis. The intraclass correlations for the intra- and inter-observer comparisons for GLSSTE were excellent, and those for GLSMOD were adequate. CONCLUSION: The fractional LV endocardial border length change, GLSMOD, showed sufficient agreement with GLSSTE to justify its use as a substitute for the STE-derived global longitudinal strain.
Assuntos
Disfunção Ventricular Esquerda/diagnóstico por imagem , Algoritmos , Ecocardiografia/métodos , Feminino , Humanos , Masculino , Volume Sistólico , Função Ventricular EsquerdaRESUMO
The glycosylation and methylation of quercetin by cultured plant cells of Phytolacca americana gave quercetin 3-Ο-ß-D-glucoside and isorharnnetin 3-Ο-ß-D- glucoside. Myricetin was glycosylated and methylated to syringetin 3-Ο-ß-D-glucoside by cultured P. americana cells.