Transient Collateral Circulation during Coronary Vasospasm

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Transient Collateral Circulation during Coronary Vasospasm Shigemasa Tani, MD, Shingo Furuya, MD, Ken Nagao, MD, Atsushi Hirayama, MD The American Journal of Medicine Volume 123, Issue 3, Pages e9-e10 (March 2010) DOI: 10.1016/j.amjmed.2009.08.021 Copyright © 2010 Elsevier Inc. Terms and Conditions

Figure 1 Initial left coronary angiogram (left: left anterior oblique view) shows the collateral vessels from the left anterior descending artery to the right coronary artery (arrows). Right coronary angiogram (right: left anterior oblique view) shows severe stenosis of the proximal right coronary artery (arrow). The American Journal of Medicine 2010 123, e9-e10DOI: (10.1016/j.amjmed.2009.08.021) Copyright © 2010 Elsevier Inc. Terms and Conditions

Figure 2 The vasospasm of the right coronary artery was relieved by administration of isosorbide dinitrate to the right coronary artery, and moderate organic stenosis remained (arrow). The collateral vessels to the right coronary artery, which were seen on the initial left coronary angiogram, can no longer be visualized. The American Journal of Medicine 2010 123, e9-e10DOI: (10.1016/j.amjmed.2009.08.021) Copyright © 2010 Elsevier Inc. Terms and Conditions