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Abstract P140: Linear Versus Volumetric Measures Of Left Ventricular Sphericity: Concordance And Normal Reference Values

Abstract only Introduction: Greater left ventricular (LV) sphericity, a more globular shape, is associated with poor outcomes. Two measures of sphericity are commonly used: Linear sphericity (LinS) is the ratio of LV end-diastolic diameter (EDD) to 4-chamber length (4cL); volumetric sphericity (VolS...

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Bibliographic Details
Published in:Circulation (New York, N.Y.) N.Y.), 2020-03, Vol.141 (Suppl_1)
Main Authors: Gona, Philimon N, Salton, Carol J, Qazi, Saadia, Tsao, Connie W, O'Donnell, Christopher J, Manning, Warren J, Chuang, Michael L
Format: Article
Language:English
Online Access:Get full text
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Summary:Abstract only Introduction: Greater left ventricular (LV) sphericity, a more globular shape, is associated with poor outcomes. Two measures of sphericity are commonly used: Linear sphericity (LinS) is the ratio of LV end-diastolic diameter (EDD) to 4-chamber length (4cL); volumetric sphericity (VolS) is the ratio of end-diastolic volume (EDV) to the volume of a sphere with diameter=4cL. We sought to compare LinS to VolS and to determine: 1) whether LinS and VolS differ with sex and age group; 2) normal values for LinS and VolS, 3) whether LinS and VolS are concordant in how they stratify individuals. Methods: 1794 adults (age 65±9y, 47.1% men) in the Framingham Offspring cohort underwent CMR imaging; LV EDD, EDV and 4cL were measured. A referent group (340M, 512W) free of clinical cardiovascular disease, hypertension, diabetes and smoking was identified. Among these, we compared LinS and VolS between sexes and across age groups (
ISSN:0009-7322
1524-4539
DOI:10.1161/circ.141.suppl_1.P140