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  • Title: Comparison of brachial artery wall thickness versus endothelial function to predict late cardiovascular events in patients undergoing elective coronary angiography.
    Author: Suessenbacher A, Dörler J, Wunder J, Hohenwarter F, Alber HF, Pachinger O, Frick M.
    Journal: Am J Cardiol; 2013 Mar 01; 111(5):671-5. PubMed ID: 23266073.
    Abstract:
    An increased brachial artery intima media thickness (BA-IMT) has been shown to be of prognostic value. Conflicting prognostic data have been reported for brachial artery flow-mediated vasodilation (BA-FMD), and the longest evaluated follow-up period to date is 5.5 years. We sought to investigate the very late prognostic value of BA-IMT and BA-FMD in 396 consecutive patients (age 54 ± 9 years) admitted for invasive evaluation of chest pain. BA-IMT and BA-FMD were measured using high-resolution ultrasonography. The patients were divided according to the median BA-IMT (0.37 mm) and median BA-FMD (7.6%). After a mean follow-up of 141 ± 12 months, cardiovascular events were documented. More cardiovascular events were found in patients with an increased BA-IMT (50 vs 78 events, p = 0.003). When the groups were compared according to the median BA-FMD, no differences in the number of events were documented (70 vs 75 events, p = 0.60). On multivariate Cox regression analysis, including age, number of risk factors, BA diameter, presence of coronary artery disease, BA-FMD, and BA-IMT, only the presence of coronary artery disease and BA-IMT remained significantly associated with outcome. In conclusion, BA-IMT, but not BA-FMD, predicted cardiovascular events and cardiovascular death with ≤12 years of follow-up in patients undergoing an invasive evaluation of chest pain. Our results represent, by far, the longest follow-up of BA-IMT and peripheral endothelial function testing compared with previously reported data.
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