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Table 1 Clinical categories of PH

From: Bioactivities and mechanisms of natural medicines in the management of pulmonary arterial hypertension

Categories Pathogenesis
Pulmonary arterial hypertension Idiopathic; Heritable (BMPR2 or other mutation); Drug or toxin-induced PH; Connective tissue disease and HIV infection et al.; Schistosomiasis
Pulmonary hypertension due to left heart disease Left ventricular systolic/diastolic dysfunction; Valvular disease et al
Pulmonary hypertension due to lung diseases or hypoxia Chronic exposure to high altitude; Other lung diseases
Chronic thromboembolic pulmonary hypertension Other pulmonary artery obstructions (angiosarcoma; arteritis; parasites; congenital pulmonary artery stenosis)
Pulmonary hypertension with unclear mechanism Chronic haemolytic anaemia; Myeloproliferative disorders; Metabolic disorders; Others