Rheumatic Heart Disease: Symptoms, Diagnosis, Treatment & Prevention
Rheumatic Heart Disease: Symptoms, Diagnosis, Treatment, and Prevention
What You Need to Know About the Heart Disease That Begins With a Common Infection
Rheumatic heart disease (RHD) is a chronic heart condition caused by damage to the heart valves following an episode of acute rheumatic fever (ARF).
Unlike many heart diseases that develop because of ageing, high blood pressure, or cholesterol, RHD begins with an infection.
The trigger is usually Group A Streptococcus (GAS), a common bacterium that causes throat infections (strep throat) and skin infections.
For most people, GAS infection is treated successfully and causes no long-term problems.
However, in some individuals, the immune system reacts abnormally after infection and begins attacking the body's own tissues, especially the heart valves.
Over time, repeated inflammation can cause:
- Thickening of heart valves
- Valve narrowing (stenosis)
- Valve leakage (regurgitation)
- Heart enlargement
- Heart failure
What Are the Symptoms of Rheumatic Heart Disease?
Symptoms of RHD depend on how much damage has occurred to the heart valves.
Early stages may have few or no symptoms.
As valve damage progresses, symptoms may include:
Shortness of breath
Reduced ability of the heart to pump blood efficiently can cause difficulty breathing, especially during exercise.
Chest discomfort
Inflammation and strain on the heart may cause chest symptoms.
Fatigue
Reduced circulation can make people feel unusually tired.
Swelling of legs or feet
Valve problems can eventually contribute to fluid accumulation.
Rapid or irregular heartbeat
Heart valve disease can affect normal heart rhythm.
Reduced exercise capacity
Children and young adults may notice difficulty keeping up with physical activity.
Because symptoms may appear years after the initial infection, early detection is extremely important.
How Is Rheumatic Heart Disease Diagnosed?
Diagnosis of RHD involves combining medical history, physical examination, and heart imaging.
1. Echocardiography (Heart Ultrasound)
Echocardiography is the most important diagnostic tool.
It allows doctors to examine:
- Heart valve structure
- Valve narrowing or leakage
- Heart function
- Evidence of previous inflammation
In high-risk communities, echocardiographic screening can identify early valve changes before symptoms develop.
2. Medical History
Doctors consider:
- Previous episodes of acute rheumatic fever
- Recurrent GAS infections
- Symptoms of valve disease
- Family and community risk factors
3. Blood Tests
Blood tests may identify evidence of recent GAS infection or ongoing inflammation.
Examples include:
- Anti-streptolysin O (ASO) antibodies
- C-reactive protein (CRP)
- Other inflammatory markers
How Is Rheumatic Heart Disease Treated?
Treatment for rheumatic heart disease depends on the severity of heart valve damage and whether the disease is still active.
1. Antibiotic Therapy
People with a history of acute rheumatic fever usually require long-term antibiotic prophylaxis, most commonly with penicillin, to prevent recurrent Group A Streptococcus (GAS) infections. Preventing repeated infections is one of the most effective ways to slow the progression of rheumatic heart disease.
2. Medications for Heart Failure
When heart valve damage affects the heart's ability to pump blood efficiently, medications may be prescribed to relieve symptoms. These may include diuretics to reduce fluid buildup, medicines to lower blood pressure, and drugs that improve the heart's pumping function.
3. Valve Repair or Replacement Surgery
Severe damage to the heart valves may require surgery. Depending on the extent of the damage, surgeons may repair the affected valve or replace it with a mechanical or biological prosthetic valve.
4. Lifelong Follow-up
People living with rheumatic heart disease require regular medical follow-up. Periodic echocardiograms help monitor valve function, detect disease progression, and determine the best timing for medical or surgical intervention.
With early diagnosis, appropriate antibiotic prevention, and timely medical care, many people with rheumatic heart disease can live active and productive lives.
Can Rheumatic Heart Disease Be Prevented?
Yes. Prevention is one of the most important strategies in reducing RHD worldwide.
Preventing Group A Streptococcus Infection
Early diagnosis and treatment of GAS infections with appropriate antibiotics can reduce the risk of ARF.
Preventing Recurrent Rheumatic Fever
For people who have experienced ARF, long-term antibiotic prophylaxis is recommended.
Regular penicillin treatment helps prevent repeated infections that can worsen heart valve damage.
Improving Access to Healthcare
RHD prevention also requires addressing broader factors:
- Early medical care
- Community health programs
- Improved living conditions
- Education and awareness
This is particularly important in remote Aboriginal and Torres Strait Islander communities in Australia, where RHD remains a major health challenge.
Conclusion: Preventing Infection, Protecting the Heart
Rheumatic heart disease demonstrates how a simple bacterial infection can trigger a complex immune response with lifelong consequences.
Research into Group A Streptococcus, immune regulation, and inflammatory pathways is helping scientists understand not only RHD but also broader questions about infection-triggered autoimmune diseases.
From prevention programs in Indigenous Australian communities to advanced immunology research, the goal remains the same:
Stop a preventable infection from becoming a lifelong heart disease.
Frequently Asked Questions
Is rheumatic heart disease contagious?
No. RHD itself is not contagious. However, GAS infections that trigger acute rheumatic fever can spread between people.
Can children recover completely from rheumatic fever?
Yes. Early diagnosis and treatment can prevent progression. However, repeated episodes of acute rheumatic fever significantly increase the risk of permanent heart valve damage.
Is rheumatic heart disease only found in developing countries?
No. Although RHD is more common in low-resource settings, it also remains an important health issue in developed countries, including Australia, particularly among Aboriginal and Torres Strait Islander communities.
Can damaged heart valves recover?
Mild valve damage may remain stable for many years, but severe valve damage is usually permanent and may eventually require surgical repair or replacement.