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[Influence factors on coronary collateral development]
Insights
Diabetes mellitus inhibits coronary collateral development, while multivessel disease and long-term angina pectoris indicate good collateral function in acute myocardial infarction patients.
Area of Science:
- Cardiology
- Vascular Biology
Context:
- Coronary collateral circulation is crucial for myocardial salvage during acute myocardial infarction.
- Understanding factors influencing collateral development is vital for improving outcomes.
Purpose:
- To identify factors associated with enhanced coronary collateral development.
- To compare patient characteristics between those with and without significant collateralization.
Summary:
- Patients with good collateral circulation (Group II) showed a higher prevalence of multivessel disease (70%) and longer angina duration (>6 months, 60%) compared to acute myocardial infarction patients (Group I).
- Diabetes mellitus was more frequent in Group I (35%) than Group II (20%), suggesting it is an inhibitory factor for coronary collateral development.
- Age, smoking, hyperlipidemia, and hypertension did not significantly differ between groups.
Impact:
- Identifies diabetes mellitus as a negative predictor of coronary collateral development.
- Highlights multivessel disease and chronic angina as indicators of robust collateralization.
- Provides insights for risk stratification and therapeutic strategies in ischemic heart disease.
Abstract:
In order to evaluate the influence factors on coronary collateral development, we compared various factors between two groups. Group I consisted of the 69 patients performed coronary angiography within 6 hours after the onset of acute myocardial infarction (MI) and Group II consisted of the 56 patients without MI because having good collaterals nevertheless whose one coronary artery was totally occluded or had a 99% stenosis. Group I (24/69, 35%) had a higher frequency of Diabetes mellitus than Group II (11/56, 20%) and had a lower frequency (30/69, 43%) of multivessel disease than Group II (39/56, 70%). The patients having angina duration more than 6 months were more in Group II (37/56, 60%) than in Group I (18/69, 26%). No significant differences existed between these two groups in age, smoke, hyperlipidemia and hypertension. In conclusions, the patients with good collateral have high frequency of multivessel disease and long history of angina pectoris. Diabetes mellitus is a inhibit factor on coronary collateral development.