Intracoronary ST-segment alternans during coronary balloon angioplasty.
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.
Second Department of Medicine, Nihon University School of Medicine, Tokyo, Japan.
S
S
Saito
I
I
Watanabe
K
K
Hibiya
J
J
Honye
M
M
Moriuchi
Y
Y
Ozawa
K
K
Kanmatsuse
D000328:Adult; D000788:Angina Pectoris, Variant / Q000503:physiopathology*; D015906:Angioplasty, Balloon, Coronary; D004562:Electrocardiography / Q000379:methods; D006801:Humans; D019157:Ischemic Preconditioning, Myocardial; D008297:Male