In Wolff-Parkinson-White (WPW) syndrome, an extra electrical pathway between your heart’s upper and lower chambers causes a rapid heartbeat. The condition, which is present at birth, is fairly rare.
The episodes of fast heartbeats usually aren’t life-threatening, but serious heart problems can occur. Treatment can stop or prevent episodes of fast heartbeats. A catheter-based procedure (ablation) can permanently correct the heart rhythm problems.
Most people with an extra electrical pathway have no fast heartbeat. This condition, called Wolff-Parkinson-White pattern.