Performance of risk stratification scores and role of comorbidities in older vs younger patients with pulmonary arterial hypertension.

Background: Risk scores are important tools for the prognostic stratification of pulmonary arterial hypertension (PAH). Their performance and the additional impact of comorbidities across age groups is unknown.

Methods: Patients with PAH enrolled from 2001 to 2021 were divided in ≥65 years old vs <65 years old patients.