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Longitudinal Measures Of Deformation Are Associated With A Composite Measure Of Contractility Derived From Pressure-Volume Loop Analysis In Children., Shahryar M. Chowdhury, Ryan J. Butts, Carolyn L. Taylor, Varsha M. Bandisode, Karen S. Chessa, Anthony M. Hlavacek, Arni Nutting, Girish S. Shirali, G Hamilton Baker
Longitudinal Measures Of Deformation Are Associated With A Composite Measure Of Contractility Derived From Pressure-Volume Loop Analysis In Children., Shahryar M. Chowdhury, Ryan J. Butts, Carolyn L. Taylor, Varsha M. Bandisode, Karen S. Chessa, Anthony M. Hlavacek, Arni Nutting, Girish S. Shirali, G Hamilton Baker
Manuscripts, Articles, Book Chapters and Other Papers
Aims: The relationship between echocardiographic measures of left ventricular (LV) systolic function and reference-standard measures have not been assessed in children. The objective of this study was to assess the validity of echocardiographic indices of LV systolic function via direct comparison to a novel composite measure of contractility derived from pressure-volume loop (PVL) analysis.
Methods and results: Children with normal loading conditions undergoing routine left heart catheterization were prospectively enrolled. PVLs were obtained via conductance catheters. A composite invasive composite contractility index (ICCI) was developed using data reduction strategies to combine four measures of contractility derived from PVL analysis. Echocardiograms …