Intracoronary ST-segment Alternans during Coronary Balloon Angioplasty

Satoshi SAITO; Ichiro WATANABE; Kazuhira HIBIYA; Junko HONYE; Masahito MORIUCHI; Yukio OZAWA; Katsuo KANMATSUSE

doi:10.1536/ihj.39.221

Satoshi SAITO, Ichiro WATANABE, Kazuhira HIBIYA, Junko HONYE, Masahito MORIUCHI, Yukio OZAWA, Katsuo KANMATSUSE

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Keywords: Acute myocardial ischemia, ST alternans, Intracoronary electrogram, PTCA

JOURNAL FREE ACCESS

1998 Volume 39 Issue 2 Pages 221-224

DOI https://doi.org/10.1536/ihj.39.221

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Abstract

ST-segment alternans has been described in experimental coronary artery occlusion and in patients with variant angina. It is also seen during coronary angioplasty. This report describes a patient who on balloon inflation during coronary angioplasty demonstrated ST-segment alternans only on intracoronary electrocardiogram but did not on surface 12 lead electrocardiogram. Hemodynamic pulsus alternans of the aortic pressure tracing was not observed during electrical alternans.

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