title: Evolving J waves prior to ventricular fibrillation postoperative coronary bypass.
abstract: A 74-year-old man without history of ventricular arrhythmias underwent coronary bypass surgery for 3-vessel disease. On the 4th postoperative day, he developed ventricular fibrillation (VF). His monitored ECG showed no elevation of the ST-segment and no prolongation of QT interval, but evolving J waves prior to VF were shown. These J waves gradually decreased after defibrillation. The subsequent angiography revealed patent grafts and normal left ventricular function. J waves reappeared in inferior leads when contrast medium was injected into the coronary artery. Therefore, evolving J wave can be a marker of latent ischemia and a predictor of VF.
authors: Department of Cardiology, Tachikawa General Hospital, Japan. tatikawa@niigata-inet.or.jp
authors: Hitoshi
authors: H
authors: Kitazawa
authors: Takayuki
authors: T
authors: Wakasugi
authors: Tsutomu
authors: T
authors: Sugimoto
authors: Kazuo
authors: K
authors: Yamamoto
authors: Shinpei
authors: S
authors: Yoshii
authors: Yoshifusa
authors: Y
authors: Aizawa
mesh_terms: D000368:Aged; D001026:Coronary Artery Bypass; D004562:Electrocardiography; D006801:Humans; D008297:Male; D011183:Postoperative Complications / Q000503:physiopathology*; D057234:Preoperative Period; D014693:Ventricular Fibrillation / Q000503:physiopathology*