Do Hemodynamic Definitions of Chronic Thromboembolic Pulmonary Hypertension Distinguish between Distinct Phenotypes of Chronic Thromboembolic Pulmonary Disease?

Chronic thromboembolic pulmonary disease (CTEPD) is defined by chronic organized thrombi in the pulmonary circulation without or with pulmonary hypertension. The current definition of chronic thromboembolic pulmonary hypertension (CTEPH) has adopted lower mean pulmonary arterial pressure (mPAP) and pulmonary vascular resistance (PVR) thresholds. Our aim was to identify its impact on the characterization of patients with CTEPD.