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Ventricular function in Chagas' heart disease
B C Maciel1, O C de Almeida Filho, A Schmidt
1Department of Internal Medicine, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Brazil.
Insights
This review examines ventricular function in Chagas's disease, highlighting early diastolic impairment. Understanding these changes is crucial for predicting mortality in Chagas's heart disease patients.
Area of Science:
- Cardiology
- Parasitology
- Medical Diagnostics
Background:
- Chagas' disease can lead to chronic heart disease with significant mortality.
- Assessing ventricular function is critical for patient management and prognosis.
- Traditional indices may not accurately reflect underlying contractility changes due to loading conditions.
Purpose of the Study:
- To review invasive and noninvasive methods for evaluating ventricular function in Chagas's disease.
- To discuss the predictive role of ventricular function in mortality for chronic Chagas' heart disease.
- To emphasize early ventricular function abnormalities, particularly diastolic impairment, in digestive forms.
Main Methods:
- Review of existing literature on invasive and noninvasive ventricular function assessment.
- Analysis of traditional indices of ventricular performance and their limitations.
- Discussion of studies focusing on ventricular function in indeterminate and digestive Chagas' disease forms.
Main Results:
- Traditional ventricular performance indices are influenced by preload, afterload, and heart rate, limiting their ability to isolate contractility changes.
- Ventricular dysfunction is a significant predictor of mortality in chronic Chagas' heart disease.
- Early diastolic performance impairment is evident in patients with digestive forms of Chagas' disease.
Conclusions:
- Ventricular function assessment is vital for understanding Chagas' heart disease progression.
- Limitations of traditional indices necessitate advanced evaluation methods.
- Early detection of diastolic dysfunction in digestive Chagas' disease may allow for timely intervention.
Abstract:
Invasive and noninvasive methods used to evaluate ventricular function in Chagas's disease are reviewed. The traditional indices of overall ventricular performance reflect the interaction of preload, contractility, afterload and heart rate. Therefore, they are unable to distinguish changes in contractility from modifications of loading conditions. The role of ventricular function as a predictor of mortality in chronic Chagas' heart disease is discussed. Ventricular function abnormalities in patients with indeterminate and digestive forms of Chagas' disease are especially emphasized. Finally, the evidence of early impairment of diastolic performance in digestive forms of Chagas' disease are especially emphasized. Finally, the evidence of early impairment of diastolic performance in patients with Chagas' disease is presented.