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Lipid profile and intensity of atherosclerosis disease in acute coronary syndrome
Rafaela Andrade Penalva1, Marçal de Oliveira Huoya, Luis Cláudio Lemos Correia
1Escola Bahiana de Medicina e Saúde Pública, Hospital Santa Izabel, Salvador, BA, Brasil. rafaelapenalva@yahoo.com.br
Insights
The cholesterol-to-HDL ratio indicates coronary artery disease severity in acute coronary syndrome patients. This lipid profile marker helps determine disease extent, particularly in those without ST-segment elevation.
Area of Science:
- Cardiology
- Clinical Lipidology
- Epidemiology
Background:
- The link between dyslipidemia and coronary artery disease (CAD) in acute coronary syndromes (ACS) is under-researched.
- Few studies demonstrate this relationship in clinical and epidemiological contexts.
Purpose of the Study:
- To assess the association between lipid profiles and CAD severity in ACS patients without ST-segment elevation.
- To identify lipid markers predictive of CAD extent.
Main Methods:
- Retrospective analysis of 107 ACS patients without ST-segment elevation undergoing coronary angiography.
- Evaluation of serum lipid levels and coronary artery obstruction severity (number, degree, score).
- Statistical analysis including t-test, chi-square, ANOVA, and multivariate analysis (p<0.05).
Main Results:
- 94% of patients had CAD, with a predominance of multivessel disease (53.2% males).
- A higher total cholesterol-to-HDL (TC/HDL) ratio was observed in multivessel and two-vessel disease groups compared to one-vessel disease (p=0.049).
- Multivariate analysis confirmed TC/HDL ratio as a significant predictor of CAD severity (p=0.016).
Conclusions:
- The TC/HDL ratio serves as a marker for CAD severity, correlating with the number of affected coronary vessels.
- Lipid profiles, specifically the TC/HDL ratio, can determine disease severity in ACS patients without ST-segment elevation.
Background:
The relationship between coronary artery disease (CAD) and dyslipidemia in acute coronary syndromes has been rarely demonstrated in clinical and epidemiological studies.
Objective:
To evaluate the association between lipid profile and severity of CAD in patients with acute coronary syndrome without ST-segment elevation.
Methods:
In this retrospective study, the authors reviewed medical records of 107 consecutive patients diagnosed with acute coronary syndrome (ACS) without ST-segment elevation admitted within a one-year period and who had undergone coronary angiography during hospitalization. Laboratory evaluation included serum levels of lipid fractions. Severity of CAD was determined by evaluating the number, degree, and score of coronary artery obstructions. For statistical analysis, the Students t test, chi-square test and ANOVA with statistical significance set at p<0.05, as well as multivariate analysis were performed.
Results:
A total of 107 patients were included; 94(88%) had CAD, of which 50 (53.2%) were males with predominance of multivessel disease. As regards the lipid profile, 64(59.8%) patients were observed to have TC<200mg/dl, 33(30.8%) had HDL<40 mg/dl, and 38(35.5%) had LDL<100mg/dl. The analysis of coronary angiographies showed that 94(88%) patients had CAD, and 84% had > 70% stenosis. In the association between lipid profile and CAD, we observed a higher TC/HDL ratio in the multivessel and two-vessel groups in comparison with the one-vessel group (4.3+/-2, 4.0+/-1.7, 2.9+/-1.6, respectively) with ANOVA p=0.049. In the multivariate analysis, the TC/HDL ratio remained a significant predictor (p = 0.016).
Conclusion:
The TC/HDL ratio was a marker of severity of CAD in relation to the number of vessels affected, thus demonstrating that the lipid profile can be a determinant of severity in patients with ACS without ST-segment elevation.
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