Right Ventricular Dysfunction
Right ventricular dysfunction occurs when the right side of your heart cannot pump blood effectively to your lungs. This condition can lead to fluid buildup in your body, causing swelling in your legs and abdomen, and can significantly impact your overall health and quality of life.
Table of contents
- What is right ventricular dysfunction?
- What causes right ventricular dysfunction?
- Signs and symptoms
- How is it diagnosed?
- Treatment options
- Living with right ventricular dysfunction
What is right ventricular dysfunction?
Right ventricular failure, Right-sided heart failure, Right heart failure, RV failure
Right ventricular dysfunction is a condition where the right ventricle (the lower right chamber of your heart) becomes too weak to pump blood effectively. The right side of your heart is responsible for pumping “used” blood from your body back to your lungs, where it picks up fresh oxygen[1].
When the right ventricle fails to work properly, blood cannot flow efficiently through the lungs. As a result, blood starts to back up in your veins, which are the vessels that carry blood from your body back to your heart. This backup increases pressure in your veins, pushing fluid out into surrounding tissues. This fluid buildup causes swelling and congestion throughout your body[1].
The right ventricle has a unique structure. It is triangular when viewed from the side and crescent-shaped in cross-section. Unlike the left ventricle, which must pump blood through your entire body, the right ventricle only needs to pump blood to your lungs. Because the blood vessels in the lungs have much lower resistance than those in the rest of your body, the right ventricle doesn’t need to work as hard. This is why the wall of the right ventricle is thinner than the left ventricle’s wall[3].
- Right ventricle
- Lungs
- Pulmonary circulation
- Systemic veins
What causes right ventricular dysfunction?
Right ventricular dysfunction can develop through several different mechanisms. The most common cause is actually disease of the left side of the heart. However, the condition can also arise from problems directly affecting the right ventricle or the lungs[1][2].
Left-sided heart failure
The most frequent cause of right ventricular dysfunction is left-sided heart failure. When the left ventricle stops working efficiently, it pumps less blood out to the body. The reduced blood flow causes blood to back up behind the left ventricle, moving backward into the left atrium, then into the lungs, and eventually reaching the right ventricle. This backup creates higher blood pressure, which damages the right side of the heart. The damaged right ventricle then stops pumping efficiently, and blood builds up in the veins throughout your body[1].
Left-sided heart failure itself often results from other heart conditions, such as coronary artery disease, high blood pressure, or a previous heart attack[1].
Pressure overload conditions
Sometimes right ventricular dysfunction occurs because of increased resistance in the blood vessels of the lungs, forcing the right ventricle to work harder. This can be caused by high blood pressure in the lungs (called pulmonary hypertension), pulmonary embolism (blood clots in the lungs), or chronic lung diseases such as chronic obstructive pulmonary disease (COPD)[1][4].
Volume overload and myocardial disease
Right ventricular dysfunction can also result from conditions that cause the right ventricle to handle too much blood volume or from direct damage to the heart muscle itself. This includes right ventricular infarction (heart attack affecting the right side), cardiomyopathies (diseases of the heart muscle), and certain congenital heart diseases[4].
Signs and symptoms
The main sign of right ventricular dysfunction is fluid buildup in your body. Because blood cannot move forward efficiently, it backs up in your veins, and the increased pressure pushes fluid into your tissues[1].
Swelling (edema)
Fluid buildup leads to swelling in different parts of your body. Where the fluid accumulates depends on how much extra fluid you have and your body position. If you’re standing, fluid typically builds up in your feet, ankles, and legs. If you’re lying down, it may collect in your lower back. When there is a lot of excess fluid, it can even build up in your belly, a condition called ascites[1].
The swelling in your abdomen and liver can cause discomfort, a feeling of fullness, and pain in the right upper area of your belly[1].
Breathing difficulties
Many people with right ventricular dysfunction experience breathlessness. This can occur during physical activity or even at rest in more severe cases[1].
Other symptoms
People with right ventricular dysfunction may also experience chest pain and discomfort, heart palpitations (feeling your heart beating), and extreme tiredness. Some patients report early satiety (feeling full quickly when eating) due to fluid in the abdomen[1].
Advanced symptoms
In more severe cases, when the heart cannot maintain adequate blood flow, you may develop cool and clammy skin with poor capillary refill, reduced urine output, and changes in mental function such as confusion or drowsiness[12].
How is it diagnosed?
Diagnosing right ventricular dysfunction involves a combination of clinical assessment, imaging tests, and laboratory examinations. Your doctor will use several approaches to understand your condition[2].
Clinical examination
Your doctor will perform a physical examination looking for signs of fluid buildup, such as swelling in your legs and ankles, distended neck veins, and an enlarged liver. They will listen to your heart and lungs and check your blood pressure[1].
Echocardiography
Echocardiography (ultrasound of the heart) is one of the most important tests for diagnosing right ventricular dysfunction. This test uses sound waves to create moving images of your heart. It allows doctors to see how well your right ventricle is pumping, measure pressures in the pulmonary arteries, assess the size of the right ventricle, and evaluate heart valve function. Specific measurements include TAPSE (tricuspid annular plane systolic excursion) and evaluation of the inferior vena cava diameter[3].
Other imaging tests
Additional imaging tests may include chest X-rays, computed tomography (CT) scans, and cardiac magnetic resonance imaging (MRI). These tests help identify the underlying cause of right ventricular dysfunction and provide detailed information about heart structure and function[3][2].
Laboratory tests
Blood tests can help diagnose and monitor right ventricular dysfunction. These may include BNP (brain natriuretic peptide), which rises when the heart is under stress, and lactate levels. Other blood tests help assess how well your organs are functioning[3].
Electrocardiogram (ECG)
An electrocardiogram records the electrical activity of your heart. While it cannot diagnose right ventricular dysfunction directly, it can reveal abnormalities that suggest problems with the right side of the heart[3].
Treatment options
Treatment of right ventricular dysfunction is challenging and requires a comprehensive approach. The goals are to improve symptoms, address the underlying cause, and prevent the condition from worsening[2][4].
Medical management
Treatment should include rapid optimization of fluid status (volume management), restoration of adequate blood pressure to maintain right ventricular perfusion, and improvement of heart muscle contractility and heart rhythm[2][4].
Your doctor may prescribe medications to help manage your condition. These can include diuretics (water pills) to reduce fluid buildup, medications to improve heart function, and drugs to reduce pressure in the pulmonary arteries when appropriate. The specific medications depend on the underlying cause of your right ventricular dysfunction[8].
Oxygen and breathing support
Ensuring adequate oxygenation is important in managing right ventricular dysfunction. Your doctor may recommend supplemental oxygen if your blood oxygen levels are low[8].
Treating the underlying cause
Successful management requires addressing the condition that caused the right ventricular dysfunction. For example, if left-sided heart failure is the cause, treating that condition is essential. If lung disease is the problem, managing that disease becomes a priority[8].
Mechanical circulatory support
In severe cases where medical treatment alone is not sufficient (called refractory right ventricular failure), mechanical devices may be needed to support the heart’s pumping function. These can serve as a bridge to recovery or, in some cases, to heart transplantation[2][4][16].
Heart transplantation
For patients with severe, irreversible right ventricular dysfunction that does not respond to other treatments, heart transplantation may be considered[16].
Living with right ventricular dysfunction
If you have been diagnosed with right ventricular dysfunction, there are important steps you can take to manage your condition and maintain the best possible quality of life[15].
Take your medications
It is essential to take all prescribed medications exactly as directed by your doctor. These medications help control symptoms and slow the progression of the disease. If you experience side effects, talk to your doctor rather than stopping the medication on your own[18].
Monitor your symptoms
Pay attention to changes in your symptoms, such as increased swelling, shortness of breath, or rapid weight gain. Your care team may ask you to weigh yourself regularly so that changes in your weight, which could indicate fluid retention, are detected quickly[1][15].
Stay active
Regular physical activity can help improve your symptoms and overall health. You may be offered an exercise-based cardiac rehabilitation program tailored to your specific condition and capabilities. Before starting any exercise program, discuss with your doctor how much physical activity is safe for you[15].
Eat a healthy diet
A balanced diet is important for managing right ventricular dysfunction. Your doctor may recommend limiting the amount of salt in your diet to help control fluid retention. A healthy diet should include plenty of fruits and vegetables, whole grains, lean proteins, and foods low in saturated fat and sugar[15].
Stop smoking
If you smoke, quitting is one of the most important things you can do for your heart health. Your doctor or a smoking cessation program can provide support and, if necessary, prescribe treatments to help you quit[15].
Limit alcohol
If you drink alcohol, you should discuss with your doctor whether it is safe to continue and how much is acceptable. In some cases, especially if alcohol contributed to your heart condition, you may be advised to stop drinking entirely[15].
Get vaccinated
Right ventricular dysfunction can make you more vulnerable to infections. You should receive the annual flu vaccine and the pneumococcal vaccination to protect against serious respiratory infections[15].
Regular follow-up
You will need regular appointments with your doctor or care team to monitor your condition, typically at least every six months. These visits are opportunities to discuss your symptoms, adjust medications if needed, and perform tests to check your heart function[15].
Traveling considerations
Having right ventricular dysfunction should not necessarily prevent you from traveling or going on holiday, as long as you feel well enough and your condition is well controlled. However, check with your doctor before traveling. It may be advisable to avoid traveling to high altitudes or very hot, humid places, as these conditions can put extra strain on your heart. When flying, inform the airline of your condition. Carry your medications in different places in case you lose one set, and make a list of your medications and what they are for[15].