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Predominant RV endomyocardial fibrosis masking rheumatic mitral stenosis.
The Journal of the Association of Physicians of India
|December 3, 2014
Summary
Rheumatic mitral stenosis can cause severe right heart failure and restrictive cardiomyopathy, even without left heart symptoms. Cardiac MRI revealed diffuse scarring, explaining the rapid decline in a young woman.
Area of Science:
- Cardiology
- Cardiovascular Imaging
- Cardiomyopathy Research
Background:
- Rheumatic heart disease remains a significant global health concern, often leading to mitral stenosis.
- Right heart failure can occur secondary to left-sided heart disease, but isolated presentation is less common.
- Restrictive cardiomyopathy presents a diagnostic challenge, particularly when superimposed on other cardiac conditions.
Observation:
- A 30-year-old female with known rheumatic mitral stenosis presented with progressive right heart failure.
- The patient exhibited no overt left heart symptoms, complicating the initial diagnosis.
- Rapid deterioration to severe right heart failure and moderate pericardial effusion was noted.
Findings:
- Cardiac Magnetic Resonance (MRI) imaging revealed diffuse subendocardial scarring in both the left ventricle (LV) and right ventricle (RV).
- The observed scarring pattern was consistent with a diagnosis of restrictive cardiomyopathy.
- This extensive myocardial scarring explained the patient's rapid clinical decline.
Implications:
- This case highlights the potential for rheumatic mitral stenosis to manifest primarily as right heart failure due to associated restrictive cardiomyopathy.
- Cardiac MRI is crucial for diagnosing diffuse myocardial scarring and understanding the pathophysiology of complex heart failure.
- Early recognition and management of restrictive cardiomyopathy in the context of rheumatic heart disease are vital for improving patient outcomes.
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