Laboratory Medicine ›› 2021, Vol. 36 ›› Issue (6): 618-622.DOI: 10.3969/j.issn.1673-8640.2021.06.009

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Correlation between blood lipid and carotid atherosclerotic plaque in elderly patients with coronary heart disease

WANG Linlin1, FAN Jun1, YE Chenyu1, YING Chunmei2   

  1. 1. Department of Clinical Laboratory,Kongjiang Hospital,Shanghai 200093,China
    2. Department of Clinical Laboratory,Obstetrics and Gynecology Hospital Affiliated to Fudan University,Shanghai 200011,China
  • Received:2020-09-30 Online:2021-06-30 Published:2021-06-30

Abstract:

Objective To investigate the correlation between blood lipid and carotid atherosclerotic plaque in elderly patients with coronary heart disease(CHD). Methods A total of 138 elderly CHD patients with plaque were enrolled as plaque group,and 138 elderly CHD patients without plaque were enrolled as non-plaque group. The clinical general data were collected. Total cholesterol(TC),triglyceride(TG),low-density lipoprotein cholesterol(LDL-C),high-density lipoprotein cholesterol(HDL-C),apolipoprotein B(apo B),apolipoprotein(a)[Lp(a)],small and dense low-density lipoprotein cholesterol(sd-LDL-C) and non-high-density lipoprotein cholesterol(non-HDL-C) were determined,and the ratios of sd-LDL-C/LDL-C and LDL-C/HDL-C were calculated. Carotid atherosclerotic extent was graded as 4 according to plaque index(0~3). Spearman correlation analysis was used to analyze the correlation between different carotid plaque grades and serum factors. Risk factors for carotid atherosclerotic plaque in elderly patients with CHD were analyzed by multivariate Logistic regression. Results Body mass index(BMI),the proportion of diabetes mellitus history,the proportion of smoking history,serum levels of sd-LDL-C,Lp(a) and apo B,the ratios of sd-LDL-C/LDL-C and LDL-C/HDL-C in plaque group were higher than those in non-plaque group(P<0.05),and the other indexes showed no statistical significance between the 2 groups(P>0.05). Serum sd-LDL-C,Lp(a),apo B levels and sd-LDL-C/LDL-C ratios of grade 1,2 and 3 increased in turn(P<0.05). Serum sd-LDL-C,Lp(a),apo B and sd-LDL-C/LDL-C ratio were positively correlated with the grade of carotid plaque sclerosis(r values were 0.502,0.396,0.475 and 0.415,P<0.001). Multivariate Logistic regression analysis showed that diabetes mellitus,smoking,the increased levels of sd-LDL-C,Lp(a),apo B and sd-LDL-C/LDL-C ratio were risk factors for carotid atherosclerotic plaque in elderly patients with CHD [odds ratios(OR) were 2.203,2.147,1.514,1.829,1.412 and 1.376,respectively,P<0.05]. Conclusions Serum sd-LDL-C,Lp(a) and apo B levels and sd-LDL-C/LDL-C and LDL-C/HDL-C ratios are correlated with carotid atherosclerotic plaque in elderly patients with CHD.

Key words: Blood lipid, Carotid atherosclerotic plaque, Coronary heart disease, Elder

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