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[Correlations of the coronary arteriography with clinical data and electrocardigraphy]
Insights
This study found that coronary artery lesions correlate with angina severity and E.C.G. abnormalities. However, some patients with angina or myocardial infarction had normal coronary arteries, suggesting other factors may be involved.
Area of Science:
- Cardiology
- Diagnostic Imaging
- Clinical Medicine
Background:
- Coronary artery disease is a leading cause of mortality.
- Understanding the relationship between clinical symptoms, diagnostic tests, and coronary artery pathology is crucial for patient management.
- Previous studies have explored these correlations with varying results.
Purpose of the Study:
- To investigate the correlation between coronary arteriograms, electrocardiogram (E.C.G.) findings, and clinical data in a large patient cohort.
- To determine the extent of coronary artery lesions associated with different types and severities of angina.
- To assess the diagnostic value of E.C.G. in predicting coronary artery disease severity.
Main Methods:
- Retrospective analysis of clinical data, E.C.G.s, and coronary arteriograms from 2000 patients.
- Categorization of patients based on angina type (effort, rest, progressive) and clinical presentation.
- Correlation analysis between E.C.G. abnormalities, clinical symptoms, and the number and severity of affected coronary arteries.
Main Results:
- Significant correlation between angina intensity/frequency and the extent of coronary artery lesions in patients with angina on effort.
- Patients with angina at rest typically had lesions in a single coronary artery.
- Severe coronary lesions were associated with prolonged, spontaneous angina crises, progressive angina, and intermediate coronary syndrome.
- E.C.G. abnormalities strongly correlated with significant coronary lesions; normal/atypical E.C.G.s correlated with minimal or no lesions.
- A subset of patients presented with angina/myocardial infarction despite apparently normal coronary arteries.
Conclusions:
- Coronary arteriogram findings, E.C.G. abnormalities, and clinical presentation, particularly angina patterns, are significantly correlated.
- The extent of coronary artery disease is a key determinant of angina severity and E.C.G. changes.
- Discrepancies in some cases suggest that factors beyond visible coronary artery stenosis, such as myocardial metabolism and flow abnormalities, may contribute to ischemic symptoms.
Abstract:
The correlation between coronary arteriograms, E.C.G. and clinical data of two thousand patients was studied. In those suffering from angina on effort there was a significant correlation between the intensity and frequency of the anginal pain and the extension of the lesion in one, two or in all three main coronary arteries. In those suffering from angina at rest only one of the coronaires was usually affected. The greatest degree of lesions was found in patients with prolonged and spontaneous crises of anginal pain. In those patients suffering from progressive angina and intermediate coronary syndrome the lesions were spread totwo or all three coronaries. E.C.G. abnormalities were always correlated with significant lesions of the coronary vessels while normal or "atypical" E.C.G. were usually correlated with only slight lesions in these vessels or with normal vessels. In a few cases however angina and myocardial infarction were present in spite of apparently normal coronaries. The reason for this discrepancy is still under investigation: myocardial metabolism and coronary flow abnormalities could in part explain these finding.