Safety Surveillance of Targeted Drugs for Pulmonary Hypertension Using a Computerized Follow-up System: a Nationwide Cohort Study

This is a nationwide observational study in China tracking the safety and long-term effects of targeted medications used to treat pulmonary hypertension (high blood pressure in the arteries of the lungs). Researchers are using a computerized follow-up system to monitor patients over time. **You may be eligible if...** - You are between 3 months and 85 years old - You have been diagnosed with pulmonary hypertension confirmed by right heart catheterization (mean pulmonary artery pressure above 25 mmHg with elevated vascular resistance) - You are currently taking at least one targeted pulmonary hypertension drug or a calcium channel blocker for this condition - You have a specific type of pulmonary hypertension: Group 1 (pulmonary arterial hypertension), Group 2 (due to lung disease/low oxygen), Group 4 (due to chronic blood clots), or Group 5 (other causes) **You may NOT be eligible if...** - Your pulmonary hypertension is caused by left-sided heart disease (Group 3 in the WHO classification) Talk to your doctor to see if this trial is right for you.