11 Furthermore, PA pressure may fall as RV dysfunction develops and this may explain why we showed a trend towards prognostic power for RV S′, a marker of systolic RV function.
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Impact of pulmonary hypertension on outcome in patients with moderate or severe tricuspid regurgitation.
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The sentences
Fifth, it is possible that the borderline significant association between PH and all-cause mortality in patients with severe TR represents lack of power rather than absence of true effect on mortality.