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