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Risk factors for cardiovascular disease in a diabetic population
Insights
Cardiovascular disease (CVD) in diabetics is linked to age, high-density lipoprotein cholesterol, and blood pressure. Smoking increases CVD risk in diabetic patients under 70, while treatment type influences risk based on blood pressure.
Area of Science:
- Endocrinology
- Cardiology
- Epidemiology
Background:
- Cardiovascular disease (CVD) is a major complication in individuals with diabetes mellitus.
- Understanding risk factors for CVD in diabetic populations is crucial for preventative strategies.
Purpose of the Study:
- To investigate the associations between various clinical and biochemical variables and the prevalence of CVD in diabetic patients.
- To identify independent predictors of CVD in this cohort.
Main Methods:
- A cross-sectional study was conducted on subjects attending a Diabetic Clinic.
- Data collected included demographics, diabetes history, treatment details, metabolic parameters, blood pressure, and smoking habits.
- Cardiovascular disease was diagnosed based on established criteria including myocardial infarction, angina, ECG abnormalities, and cardiomegaly.
- Multiple logistic regression analysis was employed to identify significant associations.
Main Results:
- Independent predictors of CVD included age, high-density lipoprotein (HDL) cholesterol, diastolic blood pressure, and interactions between smoking and age, and treatment mode and blood pressure.
- HDL cholesterol showed the most significant association with CVD prevalence among lipid variables.
- Smoking was associated with a substantially increased CVD risk in diabetics up to approximately 70 years of age.
- Oral hypoglycemic agents were linked to lower CVD prevalence in normotensive individuals but increased risk in those with systolic hypertension.
Conclusions:
- Age, HDL cholesterol, diastolic blood pressure, and specific interactions are key determinants of CVD prevalence in diabetic patients.
- Smoking cessation and tailored treatment strategies considering blood pressure are important for CVD risk management in diabetes.
- High-density lipoprotein cholesterol remains a critical lipid marker for cardiovascular risk assessment in diabetes.
Abstract:
A study of the associations with cardiovascular disease (CVD) was made in subjects attending the Diabetic Clinic at Royal Perth Hospital. The variables examined were sex, age at time of study, age of onset of diabetes, duration of diabetes, mode of treatment, control (as assessed by fasting and post-prandial plasma glucose concentrations and glycosylated hemoglobin concentration), insulin levels in subjects not on insulin, obesity, blood pressure, total- and high-density lipoprotein and triglyceride concentrations, and smoking habit. CVD was diagnosed on the basis of (a) past history of myocardial infarction, (b) definite angina, (c) diagnostic ECG abnormality, and (d) cardiomegaly. A multiple logistic regression model identified the variables showing independent, significant associations with CVD as age, high-density lipoprotein cholesterol, diastolic blood pressure, an interaction between smoking and age and an interaction between treatment mode and blood pressure. As in the population generally, high-density lipoprotein cholesterol is the lipid variable showing the most significant association with prevalence of cardiovascular disease. Smoking is associated with a substantially increased risk of CVD in diabetics up to the age of about 70 yr. The use of oral hypoglycemic agents is associated with a lower prevalence of CVD in normotensive subjects, but with an increased risk in those who have systolic hypertension.