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[Effects of blood lipid levels on ST-T segment in asymptomatic hypertensive patients]
Wen-xing Xiao1, Jian-ping Bin, Hua Shang
1Department of Cardiology, Nanfang Hospital, First Military Medical University, Guangzhou 510515, China. xwx@fimmu.com
Insights
In asymptomatic hypertensive patients, elevated total cholesterol (TC) is linked to abnormal ST-T segments, suggesting myocardial damage. High-density lipoprotein cholesterol (HDL) appears protective against this ischemic change.
Area of Science:
- Cardiology
- Biochemistry
- Preventive Medicine
Context:
- Hypertension is a major risk factor for cardiovascular disease.
- Asymptomatic hypertensive patients may have underlying cardiac abnormalities.
- ST-T segment changes on electrocardiography can indicate myocardial ischemia.
Purpose:
- To investigate biochemical factors associated with ST-T segment abnormalities in asymptomatic hypertensive individuals.
- To determine the relationship between lipid profiles and myocardial ischemia indicators in hypertension.
Summary:
- This study compared lipid profiles and glucose levels in asymptomatic hypertensive patients with normal versus abnormal ST-T segments.
- Patients with abnormal ST-T segments exhibited significantly higher total cholesterol (TC) and lower high-density lipoprotein cholesterol (HDL) levels.
- Serum glucose, triglycerides (TG), low-density lipoprotein cholesterol (LDL), and very-low-density lipoprotein cholesterol (VLDL) showed no significant differences between groups.
Impact:
- Higher TC levels may contribute to or exacerbate ischemic myocardial damage in hypertensive patients.
- HDL cholesterol demonstrates a potential protective role against ischemic myocardial alterations.
- Findings highlight the importance of lipid management in preventing cardiac complications in hypertension.
Objective:
To identify the factors affecting ST-T segment in asymptomatic hypertensive patients.
Methods:
The asymptomatic patients with hypertension were divided into abnormal ST-T group (n=28) and normal ST-T group (n=20), in whom the serum levels of glucose, total cholesterol (TC), triglycerides (TG), high-density lipoprotein cholesterol (HDL), low-density lipoprotein cholesterol (LDL), very-low-density lipoprotein cholesterol (VLDL) were measured.
Results:
Compared with patients with normal ST-T segment, patients with abnormal ST-T segment had significantly higher serum levels of TC, but significantly lower HDL. The serum levels of glucose, TG, LDL, VLDL differed little between the 2 groups of patients.
Conclusion:
In asymptomatic patients with hypertension, higher serum TC level may cause or worsen ischemic myocardial damage, for which HDL plays a protective role.
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