First, let me state that wpw in pregnancy is a complicated issue. Most of the management relates to symptoms. If you have lots of symptoms of racing heart beats from your wpw and are not pregnant now, consider catheter ablation. It's relatively safe and very effective (in skilled hands) at curing this problem up front and will never complicate future prenancies if successful. If you have no symptoms of racing heart beats, it's difficult to say how pregnancy will effect the frequency of future arrhythmic events. You see, your blood volume increases 20% during the pregnancy in preparation for delivery, so your heart has to work harder during that time. If you start to develop rapid heart rhythms during preganacy, some drop in blood pressure can occur, and this can theoretically decrease blood flow to the baby slightly. Whether this with effect the pregnancy is difficult to say.... In this case, an electrophysiology study (to test the 'short-circuit' caused by wpw), might make sense, and if needed catheter ablation of the short circuit could be accomplished at the same time. If you are pregnant, however, then it is unlikely anyone will perform either procedure since xrays are used, and docs don't want to expose the fetus to xray.
Hope this helps a health forum with your doctor, too.
And wpw and high blood pressure aren't generally related.
All the best-
--boombox