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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Saito, S., Watanabe, I., Hibiya, K., Honye, J., Moriuchi, M., Ozawa, Y., & Kanmatsuse, K. (1998). Intracoronary ST-segment alternans during coronary balloon angioplasty. Japanese Heart Journal, 39(2), 221–224. https://doi.org/10.1536/ihj.39.221
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