is wpw light threatening
Wolff-Parkinson-White Syndrome in Children. WPW may lead to 2 kinds of heart rhythm problems: 1  Supraventricular tachycardia (SVT) . 2  Tachycardia (pronounced tack-ih-CARD-ee-ah) means the heart is beating too fast. 3  SVT may require treatment. 4  It is not usually life threatening.