Clinically important changes in right ventricular volume and function in pulmonary arterial hypertension assessed with cardiac magnetic resonance imaging

Figures

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  Figure 1. Changes in right ventricular end‐diastolic volume (a) and stroke volume (b) were significantly associated with changes in WHO FC. Dotted line indicates the regression line with values presented in Table 4. WHO FC, World Health Organization Functional Class.

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  Figure 2. Changes in right ventricular peak filling rate (a), peak emptying rate (b), left ventricular peak filling rate (c), and peak emptying rate (d) in relation to changes in WHO FC. Right ventricular peak filling rate shows a “U” form relationship with changing functional class. “id.”, index value. Dotted line indicates the regression line with values presented in the Results section.

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  Figure 3. NT‐proBNP and right ventricular ejection fraction have a log‐linear relationship, making it presumably difficult to judge right ventricular status from NT‐proBNP measurements as increases are seen mainly at very low right ventricular ejection fractions. Colors represent limits of NTproBNP‐levels from the 2015 European Guidelines on Pulmonary Hypertension Risk Assessment Table. Green represents the limits of the low‐risk category, yellow intermediate, and red the high‐risk category. The purpose of the color overlay is to illustrate that a right ventricular ejection fraction of, for example, 35% can have corresponding NT‐proBNP levels in both the low‐risk and high‐risk categories.