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Circ J. 2012;76(6):1469-75. Epub 2012 Apr 3.

Clinical significance of flow-mediated dilation, brachial intima-media thickness and pulse wave velocity in patients with and without coronary artery disease.

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1
Department of Cardiology, Fukuoka University School of Medicine, Fukuoka, Japan.

Abstract

BACKGROUND:

Little is known about the interrelationships among brachial flow-mediated vasodilatation (bFMD), brachial-ankle pulse wave velocity (baPWV) and brachial intima-media thickness (bIMT) in patients with and without coronary artery disease (CAD).

METHODS AND RESULTS:

Two-hundred consecutive patients with stable angina pectoris (SAP) were enrolled as the CAD group and 50 age-, sex- and body mass index-matched patients without CAD were selected as the non-CAD group. bFMD, diastolic blood pressure (DBP) and high-density lipoprotein cholesterol (HDL-C) in the CAD group were significantly lower. The CAD group showed significantly higher levels of hemoglobin A(1c)(HbA(1c)) and low-density lipoprotein cholesterol (LDL-C), but not baPWV. CAD was independently associated with bFMD, DBP, HbA(1c) and HDL-C. bFMD and HDL-C significantly decreased and LDL-C increased as the number of diseased vessels with significant stenosis increased. The number of diseased vessels was independently associated with bFMD and HDL-C. In addition, bFMD, bIMT, the time constant of the shear rate and the time constant of the flow rate as assessed by a new program, Trend Plus(®), were associated with the presence of CAD. Among these parameters, the presence of CAD was independently associated with bIMT as well as bFMD.

CONCLUSIONS:

bFMD was a better predictor of the severity of CAD than either baPWV or coronary risk factors in patients with SAP. In addition, bIMT may be a critical predictor of CAD.

PMID:
22473454
DOI:
10.1253/circj.cj-11-1283
[Indexed for MEDLINE]
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