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Receiver operating characteristic (ROC) curve for prediction of pulmonary hypertension defined as mean pulmonary artery pressure > 20 mmHg through peak tricuspid regurgitation velocity (TRV, (a)), mean right ventricular–right atrial (RV–RA) pressure gradient (b), estimated systolic pulmonary arterial pressure (sPAP, (c)) and estimated mean pulmonary arterial pressure (mPAP, (d)).
