COPD: chronic obstructive pulmonary disease; CTEPH: chronic thromboembolic pulmonary hypertension; DPG: diastolic pressure gradient; LHD: left heart disease; LV: left ventricular; PE: pulmonary embolism; PH: pulmonary hypertension; PVR: pulmonary vascular resistance.
aClass of recommendation.
bLevel of evidence.
cReference(s) supporting recommendations.