Rheumatic heart disease cardiac complications
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Common Cardiac Complications in Rheumatic Heart Disease
Rheumatic heart disease (RHD) is associated with a high rate of cardiac complications, especially in regions where the disease is prevalent and access to early diagnosis and care is limited. The most frequent complications include heart failure, pulmonary hypertension, atrial fibrillation, stroke, infective endocarditis, and systemic embolic events 1235+3 MORE.
Heart Failure and Pulmonary Hypertension
Heart failure is the most common complication in both children and adults with RHD, often resulting from severe valvular damage, particularly to the mitral and aortic valves. Pulmonary hypertension frequently develops as a consequence of chronic left-sided valve disease and is also a major contributor to morbidity 1237+1 MORE. Studies from Uganda, Ethiopia, and global registries consistently report heart failure in up to 47% of newly diagnosed patients and pulmonary hypertension in about 29–33% 1237+1 MORE.
Atrial Fibrillation and Arrhythmias
Atrial fibrillation (AF) is a common arrhythmic complication, occurring in 14–22% of RHD patients. AF increases the risk of stroke and can worsen heart failure. Even patients with mild or moderate valve disease may develop AF, sometimes before other symptoms appear 1269.
Stroke and Systemic Embolism
Stroke is a serious complication, reported in 1–7% of RHD patients, often related to atrial fibrillation or left atrial enlargement. Systemic embolic events, including peripheral artery and mesenteric ischemia, can also occur, sometimes even in patients with mild disease and sinus rhythm 26.
Infective Endocarditis
Infective endocarditis is seen in 4–5% of RHD cases. Damaged heart valves are particularly susceptible to infection, which can further worsen valve function and increase the risk of heart failure and systemic embolism 129.
Impact of Complications on Outcomes and Mortality
The presence of cardiac complications at diagnosis is strongly associated with higher mortality. In children and young adults, heart failure is the leading cause of death, and the risk of dying is much higher in those with severe valve disease or baseline complications 357. Studies show that more than 25% of children with RHD and complications die within three years, and about 23% of young adults experience a major complication or death within eight years of diagnosis, even in high-income countries with good healthcare access 357.
Challenges in Management and Prevention
Many patients present late, often with advanced disease and multiple complications, due to lack of screening and limited access to healthcare 13910. There are also gaps in the use of evidence-based interventions, such as secondary antibiotic prophylaxis, anticoagulation for atrial fibrillation, and timely surgical or catheter-based valve interventions 23. Access to cardiac surgery and advanced interventions is especially limited in low-income countries, contributing to higher mortality 37.
Role of Echocardiography in Detecting Complications
Echocardiography is essential for diagnosing RHD, assessing valve damage, and monitoring for complications like heart failure, pulmonary hypertension, and arrhythmias. It is also important for guiding treatment decisions and evaluating the impact of therapies 810.
Conclusion
Cardiac complications are common and serious in rheumatic heart disease, with heart failure, pulmonary hypertension, atrial fibrillation, stroke, and infective endocarditis being the most frequent. These complications significantly increase the risk of death, especially in children and young adults with severe disease or late presentation. Early detection, improved access to care, and better implementation of preventive and therapeutic strategies are crucial to reduce the burden of RHD-related cardiac complications worldwide.
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