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  • Title: The correlation between coronary stenosis index and flow-mediated dilation of the brachial artery.
    Author: Kaku B, Mizuno S, Ohsato K, Murakami T, Moriuchi I, Arai Y, Nio Y, Hirase H, Nagata M, Takahashi Y, Ohnaka M.
    Journal: Jpn Circ J; 1998 Jun; 62(6):425-30. PubMed ID: 9652318.
    Abstract:
    We examined the relationship between flow-mediated dilation (FMD) of the brachial artery and the extent and severity of coronary artery disease (CAD). Using high-resolution ultrasonography, we measured FMD and nitroglycerin-induced brachial artery dilation. We studied 121 patients (77 men, 44 women; mean age 64+/-11 years, range 25-79 years) who underwent coronary arteriography. The extent and severity of CAD were assessed by the coronary stenosis index (CSI). The adjusted FMD correlated inversely with CSI (rs=-0.63, p<0.0001). Multivariate analysis demonstrated that the adjusted FMD was an independent predictor of CSI. The adjusted FMD was 10.2+/-4.8% in patients without CAD (n=32), 7.7+/-6.0% in patients with single-vessel disease (n=31), 5.2+/-5.5% in patients with double-vessel disease (n=29), and 2.0+/-3.9% in patients with triple-vessel disease (n=29). The adjusted FMD was significantly lower in the double- (p<0.01) and triple-vessel (p<0.0001) disease groups than in patients without CAD. The adjusted FMD was significantly lower in the triple-vessel disease group than in the single-vessel disease group (p<0.001). Based on our results, as coronary atherosclerosis becomes more severe, the adjusted brachial artery FMD becomes more severely impaired.
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