Catheter ablation of premature ventricular contractions originating from the His bundle region.
We describe a 35-year-old man with idiopathic frequent premature ventricular contractions (PVCs) originating from the His-bundle region, where a low frequency ventricular potential was recorded in the bipolar recording and QR pattern in the unipolar recording. Electro-anatomical mapping revealed a confined low voltage zone (<1.2 mV) in the His-bundle region, and the activation spread out radially to the entire right ventricle. The PVCs were successfully abolished without any atrioventricular block by a step-wise incremental radiofrequency energy application to the His-bundle region. The patient has remained free from PVCs or any symptoms without medication during a 23 month follow-up period.
Ashikaga
Keiichi
K
Awakigahara Hospital, Miyazaki, Japan.
Tsuchiya
Takeshi
T
Nakashima
Aya
A
Hayashida
Kiyoshi
K
D000328:Adult; D000715:Anatomy / Q000379:methods; D002036:Bundle of His / Q000503:physiopathology* / Q000601:surgery; D002037:Bundle-Branch Block / Q000503:physiopathology; D017115:Catheter Ablation / Q000379:methods*; D004562:Electrocardiography / Q000379:methods*; D004563:Electrochemistry / Q000379:methods; D022062:Electrophysiologic Techniques, Cardiac; D004699:Endocardium / Q000473:pathology; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D008297:Male; D011312:Pressure; D014693:Ventricular Fibrillation / Q000503:physiopathology / Q000628:therapy*; D018879:Ventricular Premature Complexes / Q000503:physiopathology / Q000628:therapy*