1.
Heart
; 82(5): e8, 1999 Nov.
Article
in English
| MEDLINE
| ID: mdl-10525528
ABSTRACT
A 23 year old woman with idiopathic long QT syndrome had repeated syncopal attacks associated with torsades de pointes. T wave alternans (TWA) was recorded and the QT interval was abnormally prolonged during treadmill exercise test. Monophasic action potential (MAP) alternans also appeared after an abrupt shortening of the cycle length in electrophysiological study. After intravenous administration of nicorandil 6 mg, both TWA and MAP alternans disappeared.
Subject(s)
Anti-Arrhythmia Agents/therapeutic use , Long QT Syndrome/drug therapy , Nicorandil/therapeutic use , Adult , Electrocardiography , Electrophysiology , Exercise Therapy , Female , Humans , Long QT Syndrome/physiopathology , Syncope/etiology , Syncope/physiopathology
2.
J Cardiovasc Electrophysiol
; 10(8): 1161, 1999 Aug.
Article
in English
| MEDLINE
| ID: mdl-10466498