Pulmonary hypertension is a relatively common disease in everyday life. Based on the causes of pulmonary hypertension, it can be divided into two categories: primary and secondary pulmonary hypertension. Regardless of the type of pulmonary hypertension, patients often exhibit certain symptoms, such as chest tightness and shortness of breath, which are the most common symptoms. In severe cases, some patients may even experience syncope. When pulmonary hypertension affects the heart, causing right ventricular enlargement, patients often show signs of right heart failure, such as shortness of breath, difficulty breathing, lower limb edema, and gastrointestinal symptoms, such as nausea and abdominal distension.