Hajime Horie, MD; Tetsuya Matsumoto, MD; Masayuki Takahashi, MD; Yuko Nakazawa, MD; Hiroshi Yokohama, MD; Kazuo Minai, MD; Masahiko Kinoshita, MD

Abstract
While studying flow-dependent coronary dilation using a Doppler flow velocity guidewire, total occlusion of a stenosed segment of the left circumflex artery during the intracoronary infusion of bradykinin was angiographically documented. Total occlusion was not demonstrated during intracoronary infusion of bradykinin after angioplasty. This is angiographic confirmation of the coronary steal phenomenon that has been previously described in the fie l d of stress scintigraphy.
(Jpn Circ J 2001; 65: 123-125)

Key Words: Bradykinin; Coronary steal phenomenon; Flow-dependent coronary vasodilation

Mailing address: Hajime Horie, MD, First Department of Internal Medicine, Shiga University of Medical Science, Seta Tsukinowa, Otsu, Shiga 520-2192, Japan. E-mail: hajime@belle.shiga-med.ac.jp