Changing Demographics, Epidemiology, and Survival of Incident Pulmonary Arterial Hypertension: Results from the Pulmonary Hypertension Registry of the United Kingdom and Ireland

This study highlights the influence of age on phenotypes of incident pulmonary arterial hypertension and has shown the changes in demographics and epidemiology over the past decade in a national setting. The results suggest that there may be two subtypes of patients: the younger subtype with more severe hemodynamic impairment but better survival, compared with the older subtype who has more comorbidities.