Heart rhythm : the official journal of the Heart Rhythm Society
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Comparative Study
Prevalence of long and short QT in a young population of 41,767 predominantly male Swiss conscripts.
Abnormally long and short QT intervals are recognized to be associated with an increased risk for life-threatening ventricular arrhythmias. It is therefore important to define the upper and lower border of the normal QT. ⋯ The present study shows the distribution of QT intervals in an unselected young population. Because none of the subjects presented a QTc < 300 ms, it may be concluded that the short QT syndrome is a very rare entity in the population of young male adults.