Echocardiographic estimation of right ventricular wall tension: haemodynamic comparison and long-term follow-up.

This might be due to the characteristics of our population, consisting of patients without PH or at an early/intermediate phase of the disease, when the RV still performs normally or near normally, and therefore canonical parameters of impaired systolic function might not be significantly altered, while the RV silently starts to strain against growing PVR.

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