Atlas One · Host Biology · Scale 07 — System

Pulmonary Arterial Hypertension

PAH (WHO Group 1) is progressive obliterative pulmonary vascular disease; mPAP >20 mmHg + PVR ≥2 WU; BMPR2/BMP9 mutations in heritable PAH. Three pathways (endothelin/NO/prostacyclin) targeted by ERAs, PDE5i/sGCi, and prostacyclin analogues.

Also known as: PAH, Group 1 pulmonary hypertension, pulmonary hypertension, idiopathic PAH, IPAH, heritable PAH, HPAH, connective tissue disease PAH, CTD-PAH

Scale 07 — SystemScale
draftStatus
2026-06-07Last Reviewed
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pulmonary-arterial-hypertension

Pulmonary Arterial Hypertension

PAH (WHO Group 1) is progressive obliterative pulmonary vascular disease; mPAP >20 mmHg + PVR ≥2 WU; BMPR2/BMP9 mutations in heritable PAH. Three pathways (endothelin/NO/prostacyclin) targeted by ERAs, PDE5i/sGCi, and prostacyclin analogues.