The phenomenon of QT stunning: The abnormal QT prolongation provoked by standing persists even as the heart rate returns to normal in patients with long QT syndrome

Heart Rhythm, 05/24/2012

The present study extends the previous findings on the abnormal response of the QT interval in response to standing in patients with long QT syndrome (LQTS). This study also shows that this abnormal response persists even after the heart rate slows back to baseline.

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