Evaluation of endothelial dysfunction with flow-mediated dilatation after transradial coronary angiography

Objective Transradial coronary angiography (TRCA) may lead to endothelial dysfunction. Therefore, this study investigated the TRCA-related endothelial dysfunction and its relation to operator experience, the number of punctures and procedure duration.Methods and results A total of 57 patients (42 males and 17 females) who underwent TRCA were included in this single-centre study. Nine months after the procedure, all patients underwent radial artery B-mode ultrasound imaging, and flow-mediated dilatation (FMD) and nitroglycerin-mediated dilatation (NMD) techniques were employed. The non-intervened right radial artery was accepted as control. The percentage change in diameter after FMD was significantly greater in the right radial artery compared to the left radial artery (right 13.6% vs left 10.1%, P = 0.041). The percentage change in diameter after NMD was similar in both right and left radial arteries (right 23.8% vs left 23.4%, P = 0.932). According to the puncture numbers, the percentage change was sign...