Definition of pulmonary hypertension (PH) associated with left heart disease. mPAP: mean pulmonary arterial pressure; PAWP: pulmonary artery wedge pressure; PAH: pulmonary arterial hypertension; CTEPH: chronic thromboembolic pulmonary hypertension; DPG: dia... Definition of pulmonary hypertension (PH) associated with left heart disease. mPAP: mean pulmonary arterial pressure; PAWP: pulmonary artery wedge pressure; PAH: pulmonary arterial hypertension; CTEPH: chronic thromboembolic pulmonary hypertension; DPG: diastolic pressure gradient. Information from [4, 26, 27]. Harrison W. Farber, and Simon Gibbs Eur Respir Rev 2015;24:665-673 ©2015 by European Respiratory Society