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Spearman rank correlation between echocardiogram measurements: Relationships between quantitative parameters of cardiac size and function and strain and strain rate. Blue hue indicates positive correlation; red hue indicates negative correlation. Darker shading indicates more extreme correlations. Ea indicates effective arterial elastance; EDV, end‐diastolic volume; Ees, end‐systolic elastance; ESV, end‐systolic volume; LV, left ventricular.
