Ventricular preexcitation in Japanese schoolchildren is less frequent than previously reported in younger children, increases with age, and is associated with few symptoms and no significant morbidity.
The prevalence of preexcitation in younger schoolchildren was less frequent than previously reported. The prevalence of preexcitation and left free wall pathways increased with age. The symptoms were few and there was no significant morbidity.
Sano et al. (Wed,) studied this question.