Right ventricular dysfunction and impaired right ventricular-pulmonary arterial coupling in paradoxical low-flow, low-gradient aortic stenosis.

Moreover, analysis of patients with and without impaired RV–PA coupling as indicated by a TAPSE/sPAP ratio <0.31 mm/mmHg, revealed a highly significant difference in all‐cause mortality ( p = 0.009; Figure 3D ).

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