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Published on: May 31, 2024
Cardiac magnetic resonance in Chagas' disease
Carlos Eduardo Rochitte1, Marcelo Souto Nacif, Amarino Carvalho de Oliveira Júnior
1Cardiology Department of Heart Institute (InCor), University of São Paulo Medical School, São Paulo, Brazil. rochitte@incor.usp.br
Insights
Cardiac magnetic resonance (CMR) accurately detects myocardial fibrosis in Chagas' heart disease. This imaging tool shows promise for early screening and evaluating new treatments for this common cause of death.
Area of Science:
- Cardiology
- Infectious Diseases
- Medical Imaging
Background:
- Chagas' disease (CD), caused by Trypanosoma cruzi, is a major cause of mortality in Latin America.
- Cardiac involvement, including myocarditis and myocardial fibrosis (MF), is critical to patient prognosis in CD.
- Cardiac magnetic resonance (CMR) is highly effective for detecting MF in various cardiomyopathies, including Chagas' heart disease.
Purpose of the Study:
- To discuss the current clinical applications of CMR in evaluating Chagas' disease.
- To explore the future potential of CMR as a screening tool for early myocardial involvement in CD.
- To highlight CMR's role in facilitating research into novel therapeutic strategies for CD.
Main Methods:
- Review of current clinical applications of CMR in Chagas' heart disease.
- Discussion of CMR's advanced imaging capabilities for tissue characterization (edema, fat).
- Exploration of CMR's potential for early detection and screening of myocardial involvement.
Main Results:
- CMR is the most accurate method for detecting myocardial fibrosis in Chagas' heart disease.
- CMR provides comprehensive evaluation of cardiac morphology, function, and tissue characteristics.
- The study emphasizes CMR's utility in assessing Chagas' heart disease.
Conclusions:
- CMR is a valuable tool for evaluating Chagas' heart disease, particularly for detecting myocardial fibrosis.
- Future applications of CMR include early screening for subclinical myocardial involvement.
- CMR can aid in the development and testing of new therapies to alter the natural history of Chagas' disease.
Abstract:
American trypanosomiasis (Chagas' disease [CD]) caused by Trypanosoma cruzi is endemic in Latin America, where it is one of the leading causes of death. The involvement of the heart is crucial in the patients' prognosis. Besides lymphocytic myocarditis, cardiomyopathy is associated with several degrees of myocardial fibrosis (MF). Myocardial delayed enhancement by cardiac magnetic resonance (CMR) has been considered the most accurate method to detect MF in ischemic and nonischemic cardiomyopathy, including Chagas' heart disease. Additionally, CMR offers a wide variety of imaging tools to evaluate in detail morphology, the function and other tissue characterization abilities, such as detection of edema and fat. The present article aims to discuss the current clinical applicability of CMR to evaluate CD. We also discuss its future as a screening tool for very early myocardial involvement, which would allow the investigation of new therapeutic methods with potential influence in the natural history of CD.
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