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  • Title: Long QT syndrome and torsade de pointes in transient left ventricular apical ballooning syndrome.
    Author: Denney SD, Lakkireddy DR, Khan IA.
    Journal: Int J Cardiol; 2005 Apr 28; 100(3):499-501. PubMed ID: 15837097.
    Abstract:
    A recently reported cardiac syndrome of reversible left ventricular apical ballooning, also called Takotsubo cardiomyopathy or ampulla cardiomyopathy, clinically resembles acute myocardial infarction and presents with chest pain, anterior electrocardiographic changes and minimal elevation of cardiac enzymes in absence of myocardial ischemia or injury. Left ventricular function recovers completely in days to weeks. This syndrome is likely a non-ischemic, metabolic-dependent syndrome caused by stress-induced activation of the cardiac adrenoceptors, and results in markedly abnormal ventricular repolarization. Reported here is a case of left ventricular apical ballooning syndrome with QT interval prolongation in a young man who developed torsade de pointes and experienced aborted sudden cardiac death. Patient had a complete recovery of cardiac function and normalization of QT interval in a few days. The syndrome of transient left ventricular apical ballooning could be considered among the causes of long QT syndrome and torsade de pointes.
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