Abstract Background Our objective was to investigate an abbreviated version of the current European PH guidelines, noninvasive French model, abridged REVEAL 2.0 risk score calculator, Lite 2, and a refined 4-strata assessment COMPERA for inoperable chronic thromboembolic pulmonary hypertension (CTEPH). Methods We enrolled CTEPH patients from 8 PAH centers December 2009 June 2020 (n=123). 70% we...