Pulmonary hypertension is hard to diagnose early because it's not often found during a routine physical exam. Even when pulmonary hypertension is more advanced, its symptoms are similar to those of other heart and lung conditions.

To diagnose pulmonary hypertension, a health care professional examines you and asks about your symptoms. You'll likely be asked questions about your medical and family history.


Tests done to help diagnose pulmonary hypertension may include:

  • Blood tests. Blood tests can help find the cause of pulmonary hypertension or show signs of complications.
  • Chest X-ray. A chest X-ray creates pictures of the heart, lungs and chest. It may be used to check for other lung conditions that can cause pulmonary hypertension.
  • Electrocardiogram (ECG or EKG). This simple test records the electrical activity of the heart. It can show changes in the heartbeat.
  • Echocardiogram. Sound waves are used to create moving images of the beating heart. An echocardiogram shows blood flow through the heart. This test may be done to help diagnose pulmonary hypertension or to determine how well treatments are working.

    Sometimes, an echocardiogram is done while exercising on a stationary bike or treadmill to learn how activity affects the heart. If you have this test, you may be asked to wear a mask that checks how well the heart and lungs use oxygen and carbon dioxide.

  • Right heart catheterization. If an echocardiogram shows pulmonary hypertension, this test may be done to confirm the diagnosis.

    During this procedure, a cardiologist places a thin, flexible tube called a catheter into a blood vessel, usually in the neck. The catheter is gently guided into the lower right heart chamber and the pulmonary artery. A doctor can then measure blood pressure in the main pulmonary arteries and the right ventricle.

Other tests may be done to check the condition of the lungs and pulmonary arteries. The following tests may give more information about the cause of pulmonary hypertension:

  • Exercise stress tests. These tests often involve walking on a treadmill or riding a stationary bike while the heartbeat is watched. They can show how the heart reacts to exercise.
  • Computerized tomography (CT) scan. This test uses X-rays to create cross-sectional images of specific parts of the body. Dye called contrast may be given into a vein to help the blood vessels show up more clearly on the images.

    A heart CT scan, called a cardiac CT scan, can show the size of the heart and any blockages in the pulmonary arteries. It can help diagnose lung diseases that might lead to pulmonary hypertension such as COPD or pulmonary fibrosis.

  • Magnetic resonance imaging (MRI). This test uses magnetic fields and radio waves to create detailed images of the heart. It can show blood flow in the pulmonary arteries and determine how well the right lower heart chamber is working.
  • Lung function test. For this test, you blow into a special device. The device measures how much air the lungs can hold. It shows how air flows in and out of the lungs.
  • Sleep study. A sleep study measures brain activity, heart rate, blood pressure, oxygen levels and other things as you sleep. The test can help diagnose sleep apnea, which can cause pulmonary hypertension.
  • Ventilation/perfusion (V/Q) scan. In this test, a radioactive tracer is given through a vein (IV). The tracer shows blood flow. You also may breathe in a tracer that shows airflow to the lungs. A V/Q scan can show whether blood clots are causing symptoms of pulmonary hypertension.
  • Lung biopsy. Rarely, a sample of tissue may be taken from the lung to check for a possible cause of pulmonary hypertension.

Genetic testing

Screening for gene changes that cause pulmonary hypertension may be recommended. If you have these gene changes, other family members may need to be screened too.

Pulmonary hypertension functional classification

Once a diagnosis of pulmonary hypertension is confirmed, the condition is classified according to how the symptoms affect you and your ability to do everyday tasks.

Pulmonary hypertension may fall into one of the following groups:

  • Class I. Pulmonary hypertension is diagnosed, but there are no symptoms during rest or exercise.
  • Class II. There are no symptoms at rest. Everyday chores or activities such as going to work or the grocery store may cause some shortness of breath or mild chest pain. There's a slight limitation of physical activity.
  • Class III. It's comfortable at rest, but doing simple tasks such as bathing, dressing or preparing meals causes fatigue, shortness of breath and chest pain. The ability to do physical activity becomes very limited.
  • Class IV. Symptoms occur at rest and during physical activity. Any type of activity causes increasing discomfort.

Your health care team may use a risk calculator that considers your symptoms and test results to understand what type of treatment is needed. This is called pulmonary hypertension risk stratification.


There's no cure for pulmonary hypertension. But treatment is available to improve symptoms and prolong life, and to keep the disease from getting worse. You also may get treatments for any health problem that might be causing pulmonary hypertension.

It often takes some time to find the most appropriate treatment for pulmonary hypertension. The treatments are often complex. You usually need a lot of health checkups.


If you have pulmonary hypertension, you may get medicines to treat your symptoms and help you feel better. Medicines also may be used to treat or prevent complications. Treatment may include:

  • Medicines to relax blood vessels. Also called vasodilators, these medicines help open narrowed blood vessels and improve blood flow. The medicine comes in many forms. It may be breathed in, taken by mouth or given by IV. Some types are given continuously through a small pump attached to the body.

    Examples of vasodilators to treat pulmonary hypertension include epoprostenol (Flolan, Veletr), treprostinil (Remodulin, Tyvaso, others), Iloprost (Ventavis) and selexipag (Uptravi).

  • Soluble guanylate cyclase (sGC) stimulators. This type of medicine relaxes the pulmonary arteries and lowers pressure in the lungs. Examples include riociguat (Adempas). Do not take these medicines if you're pregnant.
  • Medicines to widen blood vessels. Medicines called endothelin receptor antagonists reverse the effect of a substance in the walls of blood vessels that causes them to narrow. Such medicines include bosentan (Tracleer), macitentan (Opsumit) and ambrisentan (Letairis). They may improve energy level and symptoms. Do not take these medicines if you are pregnant.
  • Medicines to increase blood flow. Medicines called phosphodiesterase 5 (PDE5) inhibitors may be used to increase blood flow through the lungs. These medicines also are used to treat erectile dysfunction. They include sildenafil (Revatio, Viagra) and tadalafil (Adcirca, Alyq, Cialis).
  • High-dose calcium channel blockers. These medicines help relax the muscles in the walls of blood vessels. They include amlodipine (Norvasc), diltiazem (Cardizem, Tiazac, others) and nifedipine (Procardia). Although calcium channel blockers can be effective, only a small number of people with pulmonary hypertension improve while taking them.
  • Blood thinners. Also called anticoagulants, these medicines help prevent blood clots. One example is warfarin (Jantoven). Blood-thinning medicines slow the clotting process. The medicines can increase the risk of bleeding. This is especially true if you're having surgery or a procedure that enters the body or creates an opening in the skin. Talk to your health care team about your risk.
  • Digoxin (Lanoxin). This medicine helps the heart beat stronger and pump more blood. It can help control irregular heartbeats.
  • Water pills, also called diuretics. These medicines help the kidneys remove excess fluid from the body. This reduces the amount of work the heart has to do. Diuretics also may be used to reduce fluid buildup in the lungs, legs and belly area.
  • Oxygen therapy. Breathing pure oxygen is sometimes recommended as a treatment for pulmonary hypertension. This treatment may be suggested if you live at a high altitude or have sleep apnea. Some people with pulmonary hypertension need oxygen therapy all the time.

Surgery or other procedures

If medicines do not help control the symptoms of pulmonary hypertension, surgery may be recommended. Surgeries and procedures to treat pulmonary hypertension may include:

  • Atrial septostomy. This treatment may be recommended if medicines don't control pulmonary hypertension symptoms. In an atrial septostomy, a doctor creates an opening between the upper left and right chambers of the heart. The opening reduces the pressure on the right side of the heart. Potential complications include irregular heartbeats called arrhythmias.
  • Lung or heart-lung transplant. Sometimes, a lung or heart-lung transplant may be needed, especially for younger people who have idiopathic pulmonary arterial hypertension. After a transplant, medicine must be taken for life to help reduce the chance of rejection.

Clinical trials

Explore Mayo Clinic studies testing new treatments, interventions and tests as a means to prevent, detect, treat or manage this condition.

Lifestyle and home remedies

Lifestyle changes may help improve pulmonary hypertension symptoms. Try these tips:

  • Eat healthy. Eat a healthy diet rich in whole grains, fruits and vegetables, lean meats, and low-fat dairy products. Try to stay away from saturated fat, trans fat and cholesterol. Limit salt.
  • Stay as active as possible and manage weight. Even mild forms activity might be too exhausting for some people who have pulmonary hypertension. For others, moderate exercise, such as walking, might be helpful — especially when done during oxygen therapy. Your health care team can help you plan an appropriate exercise program.
  • Don't smoke. If you smoke, the most important thing you can do for your heart and lungs is to stop. If you need support quitting, ask your health care team for treatment that can help. Avoid secondhand smoke too, if possible.
  • Get plenty of rest. Resting can reduce tiredness related to pulmonary hypertension.
  • Avoid high altitudes. High altitudes can make pulmonary hypertension worse. If you live at an altitude of 8,000 feet (2,438 meters) or higher, you might be told to consider moving to a lower altitude.
  • Avoid activities that can excessively lower blood pressure. These include sitting in a hot tub or sauna or taking long hot baths or showers. Such activities lower blood pressure and can cause fainting or even death. Also, do not do activities that cause a lot of straining, such as lifting heavy objects or weights.
  • Give your health care team a list of your medicines. Some medicines can make pulmonary hypertension worse or affect its treatment.
  • Get regular health checkups. Tell your health care team about any new or worsening symptoms or medicine side effects. If pulmonary hypertension affects your quality of life, ask about options that could help.
  • Get recommended vaccines. Respiratory infections can cause serious health concerns for people with pulmonary hypertension. Ask your health care team about recommend vaccines to prevent common viral infections.
  • Talk to a health care professional before becoming pregnant. Pulmonary hypertension can cause serious complications to both mother and baby during pregnancy. Birth control pills can increase the risk of blood clots. Talk to your health care team about other birth control options.

Coping and support

Connecting with others who are going through similar situations may help you ease and manage stress. Ask your health care team if there are any pulmonary hypertension support groups in your area.

Preparing for your appointment

If you think that you might have or be at risk of pulmonary hypertension, make an appointment for a health checkup.

There's often a lot to discuss at your appointment, so it's a good idea to be prepared. Here's some information to help you get ready for your appointment.

What you can do

  • Be aware of any pre-appointment restrictions. When you make your appointment, ask if there is anything you need to do before your checkup. For example, you might be told not to eat or drink before some medical tests.
  • Write down any symptoms you're having, including any that might seem unrelated to pulmonary hypertension. Try to remember when they began. Be specific, such as days, weeks and months.
  • Make a list of important personal information, including any family history of pulmonary hypertension, lung disease, heart disease, stroke, high blood pressure or diabetes, and any major stresses or recent life changes.
  • Make a list of all medicines, as well as any vitamins, herbal products or other supplements that you're taking.
  • Take a family member or friend along, if possible. Someone who goes with you can help you remember information you're given.
  • Be prepared to discuss your diet and exercise habits. If you don't already follow a diet or exercise routine, talk to your health care team about any challenges you might face in getting started.
  • Make a list of questions to ask your health care team. List your questions from most important to least important in case time runs out.

For pulmonary hypertension, some basic questions to ask your health care team are:

  • What is likely causing my symptoms or condition?
  • What are other possible causes for my symptoms or condition?
  • What kinds of tests do I need?
  • What's the most appropriate treatment?
  • Is there a generic alternative to the medicine you're prescribing?
  • What are the options to the primary treatment that you're suggesting?
  • What's an appropriate level of physical activity?
  • How often should I be checked for changes in my condition?
  • I have other health conditions. How can I best manage them together?
  • Are there any restrictions that I need to follow?
  • Should I see a specialist?
  • Are there any brochures or other printed material that I can have? What websites do you suggest?

Don't hesitate to ask other questions.

What to expect from your doctor

Your doctor and other members of your health care team may ask you many questions. Being ready to answer them might give you more time to discuss any concerns. You may be asked:

  • When did you first begin having symptoms?
  • Do you always have symptoms, or do they come and go?
  • How severe are the symptoms?
  • What, if anything, seems to improve symptoms?
  • What, if anything, seems to make symptoms worse?

What you can do in the meantime

It's never too late to make healthy lifestyle changes, such as quitting smoking, reducing salt and eating a healthy diet. These changes may help prevent pulmonary hypertension from getting worse.

Pulmonary hypertension care at Mayo Clinic

July 28, 2023

Living with pulmonary hypertension?

Connect with others like you for support and answers to your questions in the Transplants support group on Mayo Clinic Connect, a patient community.

Transplants Discussions

Liver transplant - Let's support each other

1599 Replies Mon, Jun 17, 2024

Lori, Volunteer Mentor
Snapshots of hope: Life on the other side of transplant.

86 Replies Mon, Jun 17, 2024

Recurrent Liver Cancer After Liver Transplant

12 Replies Wed, Jun 12, 2024

See more discussions
  1. Pulmonary hypertension — High blood pressure in the heart-to-lung system. American Heart Association. https://www.heart.org/en/health-topics/high-blood-pressure/the-facts-about-high-blood-pressure/pulmonary-hypertension-high-blood-pressure-in-the-heart-to-lung-system. Accessed May 10, 2023.
  2. Pulmonary hypertension. National Heart, Lung, and Blood Institute. https://www.nhlbi.nih.gov/health/pulmonary-hypertension. Accessed May 10, 2023.
  3. Klinger JR, et al. Therapy for pulmonary arterial hypertension in adults: Update of the CHEST guideline and expert panel report. Chest. 2019; doi:10.1016/j.chest.2018.11.030.
  4. AskMayoExpert. Pulmonary hypertension (adult). Mayo Clinic; 2022.
  5. Rubin LJ, et al. Clinical features and diagnosis of pulmonary hypertension of unclear etiology in adults. https://www.uptodate.com/contents/search. Accessed Nov. 19, 2022.
  6. Hopkins W, et al. Treatment of pulmonary arterial hypertension (group 1) in adults: Pulmonary hypertension-specific therapy. https://www.uptodate.com/contents/search. Accessed Nov. 19, 2022.
  7. Fuster V, et al., eds. Pulmonary hypertension. In: Fuster and Hurst's the Heart. 15th ed. McGraw Hill; 2022. https://accessmedicine.mhmedical.com. Accessed Nov. 19, 2022.
  8. Ami TR. Allscripts EPSi. Mayo Clinic. Dec. 21, 2022.
  9. Ferri FF. Pulmonary hypertension. In: Ferri's Clinical Advisor 2023. Elsevier; 2023. https://www.clinicalkey.com. Accessed Nov. 19, 2022.
  10. Connolly HM. Evaluation and prognosis of Eisenmenger syndrome. https://www.uptodate.com/contents/search. Accessed Nov. 19, 2022.
  11. Olson EJ (expert opinion). Mayo Clinic. Jan. 24, 2023.
  12. Simonneau G, et al. Haemodynamic definitions and updated clinical classification of pulmonary hypertension. The European Respiratory Journal. 2019; doi:10.1183/13993003.01913-2018.
  13. Gelzinis TA. Pulmonary hypertension in 2021: Part I — definition, classification, pathophysiology, and presentation. Journal of Cardiothoracic and Vascular Anesthesia. 2021; doi:10.1053/j.jvca.2021.06.036.
  14. Humbert M, et al. 2022 ESC/ERS Guidelines for the diagnosis and treatment of pulmonary hypertension. European Heart Journal. 2022; doi:10.1093/eurheartj/ehac237.
  15. Highland KB, et al. Development of the pulmonary hypertension functional classification self‑report: A patient version adapted from the World Health Organization functional classification measure. Health and Quality of Life Outcomes. 2021; doi:10.1186/s12955-021-01782-0.
  16. Mankad R (expert opinion). Mayo Clinic. Feb. 7, 2023.
  17. Frantz RP (expert opinion). Mayo Clinic. May 3, 2023.