Idiopathic Pulmonary Hypertension

This study aims to compare the effectiveness and safety of two treatment approaches for patients with severe pulmonary hypertension: standard targeted drug therapy alone, and a combination of standard targeted drugs plus Qishen Yiqi Dropping Pills over 52 weeks of treatment. Pulmonary hypertension is a chronic condition that raises blood pressure in the lung arteries, causing symptoms like shortness of breath, tiredness, and difficulty with physical activity. While targeted drug treatments are available, many patients still experience persistent symptoms and reduced quality of life. This study will enroll patients with severe pulmonary hypertension to see if adding Qishen Yiqi Dropping Pills to standard treatment can improve patient outcomes. Participants will be randomly assigned to one of two groups: the combination treatment group will receive Qishen Yiqi Dropping Pills plus standard targeted drugs, and the control group will receive standard targeted drugs alone. All participants will be followed for 52 weeks, during which we will regularly assess: * Changes in daily quality of life * How far participants can walk in 6 minutes, and their level of breathlessness after the walk * Changes in heart function and related blood test indicators * Any side effects or discomfort during treatment The primary goal of this study is to see if the combination treatment can improve patients' exercise capacity and quality of life more effectively than standard treatment alone. We will also monitor the safety of adding Qishen Yiqi Dropping Pills to standard therapy. All study procedures follow ethical regulations, and participants can withdraw from the study at any time without affecting their regular medical care.