QT interval prolongation and torsades de pointes unmasked by intracoronary acetylcholine administration.
Intracoronary acetylcholine administration, which was performed to exclude vasospasms, unmasked an abnormal QT interval prolongation and initiated torsades de pointes in a patient with normal QT interval at rest.
Chinushi
M
M
First Department of Internal Medicine, Niigata University School of Medicine, Japan. chinushi@med.niigata-u.ac.jp
Nakagawa
I
I
Hori
T
T
Yamashita
F
F
Washizuka
T
T
Aizawa
Y
Y
D000109:Acetylcholine / Q000008:administration & dosage; D000368:Aged; D003331:Coronary Vessels; D004562:Electrocardiography; D005260:Female; D006801:Humans; D007267:Injections; D016171:Torsades de Pointes / Q000175:diagnosis*
D000109:Acetylcholine