The impact of the new World Symposium on Pulmonary Hypertension definition of pulmonary hypertension on the prevalence of pre-capillary pulmonary hypertension

Abstract

Objective: Since the first World Symposium on Pulmonary Hypertension (WSPH; Geneva, 1973), pulmonary hypertension (PH) has been defined as a mean pulmonary artery pressure (mPAP) >= 25 mm Hg measured at right heart catheterization (RHC) while at rest in the supine position. At the 6th WSPH congress (Nice, 2018), a new proposal was presented defining pre-capillary PH as mPAP >20 mm Hg, with pulmonary arterial wedge pressure (PAWP) 3 WU. The aim of this study was to investigate the impact of the new definition of PH on the number of pre-capillary PH patients.