Prognostic relevance of the right ventricular fractional area change to pulmonary artery systolic pressure ratio in pulmonary arterial hypertension: Insights from the FOCUS-PAH registry
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Background: In pulmonary arterial hypertension (PAH), echocardiographic ventriculoarterial coupling is traditionally assessed with the ratio between tricuspid annular plane systolic excursion (TAPSE) and pulmonary artery systolic... ...
