Dual Uncommon Atrioventricular Connections in a Patient With Wolff-Parkinson-White Syndrome.

BACKGROUND

Accessory pathways (APs) from the atrial appendage are uncommon and primarily described on the right side. Furthermore, connections involving the left atrial appendage (LAA) are even rarer.

METHODS AND RESULTS

This case report describes a 27-year-old female with recurrent supraventricular tachycardia (SVT) due to Wolff-Parkinson-White (WPW) syndrome. Electrophysiological evaluation identified dual atrioventricular (AV) connections: one from the LAA and another from the left coronary cusp (LCC).

CONCLUSION

The electrical characteristics of WPW syndrome need a deeper understanding. The retrograde conduction can persist even after successfully eliminating the antegrade conduction.