半月板撕裂治疗指南：选择、康复和自我护理

Overview

Pulmonary hypertension (PH) is a type of high blood pressure that affects the arteries in the lungs and the right side of the heart. In PH, the blood vessels that carry blood from the heart to the lungs become narrowed, thickened, or blocked. This makes it harder for blood to flow through the lungs, raising pressure in the pulmonary arteries and forcing the right ventricle of the heart to work harder. Over time, the right heart can weaken and fail if the condition is not treated.

PH is different from regular (systemic) high blood pressure that is measured with an arm cuff. It is a serious, progressive condition, but many people manage it successfully with modern treatments. There are five main groups of PH based on cause, including pulmonary arterial hypertension (PAH), PH due to left heart disease, PH due to lung disease or low oxygen, chronic thromboembolic pulmonary hypertension (CTEPH) from blood clots, and PH with unclear or multiple causes.

Signs & Symptoms

Early symptoms can be subtle and often mistaken for being out of shape, anxiety, or other lung or heart problems. Symptoms usually worsen with activity and may progress over months or years.

• Shortness of breath (dyspnea), especially during exercise or climbing stairs
• Unusual fatigue or low energy
• Chest pain or pressure (angina-like discomfort)
• Dizziness, lightheadedness, or fainting (syncope)
• Swelling in the ankles, legs, or abdomen (edema)
• Racing or pounding heartbeat (palpitations)
• Bluish lips or skin (cyanosis) in more advanced cases
• Dry cough or, less commonly, coughing up blood

Causes & Risk Factors

PH can develop for many reasons. In some people (especially Group 1 PAH) the exact cause is unknown (idiopathic) or linked to genetic mutations. Other common triggers and risk factors include:

• Left-sided heart disease (such as heart failure with preserved or reduced ejection fraction, or valve disease)
• Chronic lung diseases including COPD, interstitial lung disease, or sleep apnea
• Blood clots in the lungs that do not fully resolve (leading to CTEPH)
• Connective tissue diseases such as scleroderma or lupus
• Congenital heart defects
• Liver disease (portopulmonary hypertension)
• Certain drugs or toxins (historical appetite suppressants, methamphetamine)
• HIV infection or schistosomiasis in some regions
• Family history of PAH or genetic predisposition
• Female sex (PAH is more common in women) and younger to middle age for idiopathic PAH

Diagnosis

Diagnosing PH requires several steps because symptoms overlap with many other conditions. Your doctor will start with a careful history and physical exam, then order tests to measure pressures, assess heart and lung function, and find the underlying cause.

• Echocardiogram (ultrasound of the heart) – often the first screening test that estimates pulmonary pressures and right-heart function
• Right-heart catheterization – the gold-standard test that directly measures pressures in the pulmonary arteries and heart chambers
• Blood tests, ECG, chest X-ray, and pulmonary function tests
• CT scan or V/Q scan of the lungs to look for clots or lung disease
• Six-minute walk test to measure exercise capacity
• Additional tests such as overnight oximetry, sleep study, or genetic testing when indicated

Referral to a pulmonary hypertension specialty center is recommended for confirmation and classification of the type of PH, because treatment depends heavily on the specific group and severity.

Treatment & Management

There is no single cure for most forms of PH, but treatment can greatly reduce symptoms, improve quality of life, and slow disease progression. Care is highly individualized and usually involves a multidisciplinary team.

• Medications: For PAH, targeted therapies include endothelin receptor antagonists, PDE-5 inhibitors, prostacyclin pathway agents (oral, inhaled, or continuous infusion), and soluble guanylate cyclase stimulators. Diuretics help reduce fluid overload. Anticoagulants may be used in CTEPH or selected cases. Oxygen therapy is given if blood oxygen is low.
• Treating the underlying cause: Optimizing heart failure therapy, managing lung disease, treating sleep apnea, or performing pulmonary thromboendarterectomy (surgery) or balloon pulmonary angioplasty for operable CTEPH.
• Supportive care: Supervised exercise/rehabilitation, vaccines (flu, pneumococcal, COVID-19), iron repletion if deficient, and careful fluid and salt management.
• Advanced options: In severe refractory cases, atrial septostomy or lung (or heart-lung) transplantation may be considered at specialized centers.

Regular follow-up with right-heart catheterization, echo, walk tests, and biomarkers helps guide therapy adjustments. Never stop or change PH medicines without specialist advice.

Living With It

Living with pulmonary hypertension means partnering closely with your care team, pacing activities, and protecting your heart and lungs. Many people continue to work, travel (with planning), and enjoy family life with the right support. Emotional health is important—anxiety and depression are common and treatable. Patient support groups and organizations such as the Pulmonary Hypertension Association can provide practical tips and community.