Background Impairment of endothelial function is an independent predictor of coronary events. The aim of this study was to clarify the influence of arterial access and coronary angiography on endothelial function.
Methods Eighteen patients with stable angina pectoris who underwent coronary angiography were included in this study. Brachial artery flow-mediated dilatation of patients was measured before angiography, after femoral arterial sheath insertion, and after coronary angiography.
Results Of 18 patients, 11 had angiographically apparent atherosclerosis. Flow-mediated dilatation after femoral arterial sheath insertion (mean ± SD, 6.62% ± 3.87%) was found to be significantly lower than either before (10.62% ± 5.18%) or after coronary angiography (11.66% ± 5.30%; P = 0.007 and P = 0.001, respectively). Basal and postangiographic flow-mediated dilatation values were similar. Flow-mediated dilatation significantly decreased after sheath insertion in the group with angiographically normal coronary arteries (14.47% ± 4.34% vs 5.98 ± 4.00%, respectively; P = 0.006), whereas the difference was not significant in patients with CAD (8.17% ± 4.16% vs 7.03% ± 3.92%, respectively).
Conclusions Coronary angiography did not result in endothelial vasomotor dysfunction. Femoral arterial sheath insertion during coronary angiography was associated with a short-lived endothelial dysfunction. Larger studies are needed to interpret the effect of coronary atherosclerosis on attenuation of endothelial response against arterial wall injury.
- coronary angiography
- endothelial dysfunction
- flow-mediated dilatation
- femoral arterial sheath insertion
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