title: A case of variant angina developing transient collateral circulation during vasospasm.
abstract: Variant angina is characterized by spontaneous episodes of angina, usually occurring in the morning and having ST segment elevation on the electrocardiogram. However, in the case presented here, vasospasm and angina was shown by ergonovine without ST elevation. The patient was a 60-year-old man who presented with a 2-year history of frequent chest pain. There were no abnormalities in coronary angiography. When ergonovine (100 µg) was injected, total occlusion of the proximal right coronary artery was seen, without ST elevation at the electrocardiogram. The cause was collateral from left anterior descending artery to distal right coronary artery at the left coronary angiography. Therefore, in a patient with variant angina without ST elevation, a transient collateral circulation during vasospasm should be considered.
authors: Division of Cardiology, Cardiac and Vascular Center, Inha University College of Medicine, Incheon, Korea.
authors: Won Seop
authors: WS
authors: Lee
authors: Dae Hyeok
authors: DH
authors: Kim
authors: Keum Soo
authors: KS
authors: Park
authors: Sung Ill
authors: SI
authors: Woo
authors: Sung Hee
authors: SH
authors: Shin
authors: Kwan
authors: K
authors: Jun
authors: Woong
authors: W
authors: Cheon
authors: Eun Seon
authors: ES
authors: Jeong
authors: Sang Don
authors: SD
authors: Park
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