Article
Beta1-adrenergic receptor polymorphisms, QTc interval and occurrence of symptoms in type 1 of long QT syndrome.
International journal of cardiology - 31 May 2007
Paavonen Kristian J, Swan Heikki, Piippo Kirsi, Laitinen Päivi, Fodstad Heidi, Sarna Seppo, Toivonen Lauri, Kontula Kimmo, Viitasalo Matti
Abstract excerpt
BACKGROUND: The most prevalent LQT1 form of inherited long QT syndrome is caused by mutations of the KCNQ1 gene resulting repolarizing I(Ks) potassium current to decrease and the QT interval to prolong. As abrupt sympathetic activation triggers ventricular arrhythmias that may cause syncopal atta...
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