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Left ventricular cineangiography in Chagas' disease: detection of early myocardial damage
Insights
Left ventricular cineangiography detects early myocardial damage in Chagas disease patients. This imaging technique identifies subclinical asynergy and advanced lesions like aneurysms, aiding diagnosis and treatment planning.
Area of Science:
- Cardiology
- Infectious Diseases
- Medical Imaging
Background:
- Chagas disease can lead to chronic heart complications.
- Early detection of cardiac involvement is crucial for patient management.
- Left ventricular dysfunction is a hallmark of advanced Chagasic heart disease.
Purpose of the Study:
- To identify early left ventricular (LV) cineangiographic signs of myocardial damage in chronic chagasic patients.
- To analyze the progression of cardiac lesions in different stages of Chagas disease.
- To evaluate the utility of left cineventriculography in diagnosing and characterizing cardiac abnormalities.
Main Methods:
- A cohort of 126 chronic chagasic patients was studied.
- Patients were categorized into three groups based on clinical, ECG, and radiological findings.
- Left cineventriculography was performed to assess LV function and morphology.
Main Results:
- 41% of patients without clinical heart disease showed subclinical apical asynergy.
- 98% of patients with ECG abnormalities exhibited extensive asynergy, LV dilatation, and reduced contractility.
- Congestive heart failure patients had dilated, hypokinetic LV with apical aneurysms (40%) and LV thromboses (20%).
Conclusions:
- Left cineventriculography is effective in diagnosing early, subclinical myocardial damage in Chagas disease.
- The study highlights the evolution of cardiac lesions from asynergy to dilatation, aneurysms, and thrombosis.
- Cineventriculography aids in identifying potentially resectable lesions like ventricular aneurysms and apical thromboses.
Abstract:
The purpose of this investigation was to identify early left ventricular (LV) cineangiographic signs of myocardial damage and to study the evolution of the characteristic lesions in 126 chronic chagasic patients, divided into three groups. Group I patients had no clinical, ECG, or radiologic evidences of heart disease; 41% of them manifested apical or anterior apical asynergy, suggestive of early subclinical myocardial damage. Group II patients had abnormal ECG findings and no clinical signs of heart failure. Extensive asynergy, LV dilatation, decreased distensibility, and depressed contractility were found in 98% of these cases. Group III patients presented with congestive heart failure, a greatly dilated, hypokinetic LV chamber, and a 40% incidence of large apical aneurysms, 20% with thromboses within the LV. The performance of a left cineventriculogram in our chagasic patients enabled us to diagnose early myocardial damage and to detect potentially resectable lesions, such as ventricular aneurysms and apical thromboses.