Fig. 2

Preoperative and postoperative coronary angiography. A Preoperative angiography indicated 50% stenosis in right main coronary artery. B Angiographic findings of right coronary artery after onset of Adams-Stokes syndrome. C After administration of nitroglycerin into the spasm site, the posterior descending branch was visualized. White arrow indicated the spasm in the orifice of the posterior descending branch in the non-manipulated vessel