Clinical Research Directory

* Inclusion Criteria: 1. Diagnosed with PAH WHO group 1 (2022 ESC/ESR guidelines criteria) as the presence of a mean pulmonary artery pressure (mPAP) greater than 20 mmHg at rest with pulmonary arterial wedge pressure (PAWP) \>15 mmHg and pulmonary vascular resistance (PVR) \>2 WU, according to the 2022 ESC/ERS Guidelines for the diagnosis and treatment of pulmonary hypertension. 2. Included in the institutional registry of PAH of Hospital Italiano de Buenos Aires 3. Aged ≥18 years at the index date. * Exclusion Criteria History of lung transplantation surgery previously the baseline period