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Vasc Med. 2006 Nov;11(4):239-44.

Association of improvement of brachial artery flow-mediated vasodilation with cardiovascular events.

Author information

1
Division of Cardiology, Innsbruck Medical University, Innsbruck, Austria.

Abstract

The aim of this pilot study was to test the prognostic value of serial measurements of peripheral endothelial function, assessed by brachial artery flow-mediated dilation (FMD), in patients with angiographically proven coronary artery disease. In 68 patients, FMD was measured on the day after coronary angiography and again after a mean of 14 +/- 12 months. Patients were divided into two groups: absolute improvement in FMD > or = 3% (FMD-improver = FMD-i) and < 3% (FMD-non-improver = FMD-ni). After a mean follow-up of 44 +/- 12 months, cardiovascular events were recorded. Baseline characteristics were similar between groups, except the number of risk factors which was smaller in FMD-i (1.6 +/- 0.7 vs 2.1 +/- 0.9, p < 0.02). Cardiovascular events were more frequent in FMD-ni (9 vs 1 event; p < 0.05). In Kaplan-Meier analysis, a trend towards a better outcome in patients with improved FMD was found using the log-rank test (p = 0.08). The single baseline FMD showed no relationship with late cardiovascular events. Thus, 'delta-FMD' may be more closely related to prognosis than a single FMD measurement.

PMID:
17390547
DOI:
10.1177/1358863x06075006
[Indexed for MEDLINE]

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