This is a multicenter retrospective cohort study on pulmonary arterial hypertension. It is expected to collect data from no less than 5,000 patients to compare the long-term overall survival of patients with and without diabetes, and analysis the risk factors of the overall survival .

Inclusion Criteria:

• Individuals aged 18 to 80 years with full capacity for civil conduct.
• Patients diagnosed with pulmonary hypertension by community-level and/or higher-level medical institutions.

Exclusion Criteria:

• Patients with malignant tumors.
• Other physical conditions judged by the researchers as making the patients ineligible to participate in the clinical study.

Patients diagnosed with pulmonary hypertension