Is supraventricular tachycardia always caused by Wolff-Parkinson-White Syndrome?

I have had a few episodes of SVT and it is now controlled with medication, but after doing some research on my own, I'm wondering if I have this condition.

Supraventricular tachycardia(SVT) is not always caused by Wolff-Parkinson-White Syndrome(WPW). SVT is any rapid heart rate that origionates frome a site above the ventricles of the heart.These beats usually origionate from the atria at a rate greater than 150 beats per minute. SVT is general term used to describe any rhythm on an EKG that has a narrow QRS complex that is greater than 150 beats per minute. Often you will not be able to tell exactly what the actual heart rhythm is until the heart is slowed down. SVT may actually be atrial fibrilation, atrial flutter or WPW. WPW is a slur in the intitiation of the QRS complex called a delta wave. WPW can only be diagnosed when the heart rate is slow enough to actually be able to see all of the parts of the electrical activity during the cardiac cycle. If you are concerned about whether or not you have this you will need to have an EKG done when you are not in SVT. WPW is treated differently than atrial fibrilation and atrial flutter.

WPW Syndrome always causes SVT attacks, however, being WPW, this is unlike most other SVT's; with WPW you have an extra pathway in your heart called the Bundle of Kent that leads directly to your ventricles. When your heart goes into an attack of SVT, if the electrical impulse travels through the Bundle of Kent (alternate pathway) instead of the AV node (the one that usually conducts the electrical impulse that starts the heart beat), it can cause ventricular tachycardia, and if left untreated, can turn into cardiac arrest. This is why WPW is classified as one of the more deadly atrial rhythms. The only way to know if you indeed have WPW, you will need an electrocardiogram done to evaluate your heart under resting circumstances. When an individual is in normal sinus rhythm, the ECG characteristics of WPW syndrome are a short PR interval, widened QRS complex (greater than 120ms in length) with slurred upstroke of the QRS complex, and secondary repolarization changes reflected in ST segment-T wave changes. This is the only way to know if you actually do have WPW.