Medical Reserch and Education ›› 2020, Vol. 37 ›› Issue (1): 41-46.DOI: 10.3969/j.issn.1674-490X.2020.01.008

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  • Received:2019-12-05 Online:2020-02-25 Published:2020-02-25

Abstract: Objective To study the correlation between the level of thyroid stimulating hormone(TSH)and the severity of coronary artery disease in patients with subclinical hypothyroidism(SCH).Methods 246 patients with coronary heart disease diagnosed by coronary angiography, according to the level of serum TSH, were selected and divided into subclinical hypothyroidism group(126 patients)and normal nail function group(120 patients), and the SYNTAX score of coronary artery disease in subclinical hypothyroidism group was calculated. Spearman was used to analyze the correlation between TSH level and severity of coronary artery disease. Results There was no significant difference in age, sex, smoking history, prevalence of hypertension, systolic blood pressure and diastolic blood pressure between subclinical hypothyroidism group and normal group(P>0.05).The TSH,TC, TG, LDL-C, AIP in subclinical hypothyroidism group were higher than those in normal group, the difference was statistically significant(P<0.05). The TSH, TC, TG, LDL-C, AIP were higher than middle group and low group、middle group were higher than low group in subclinical hypothyroidism group, the difference was statistically significant(P<0.05). Spearman correlation analysis showed that TSH was positively correlated with SYNTAX score(r=0.768, P<0.001). Conclusion The increase of TSH at subclinical level is one of the risk factors of coronary heart disease, and has a positive correlation with the severity of coronary artery disease.

Key words: coronary heart disease, subclinical hypothyroidism, SYNTAX score, plasma arteriosclerosis index

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