Pseudo sinus rhythm originating from the left superior pulmonary vein in a patient with paroxysmal atrial fibrillation.
We report the case of a patient with paroxysmal atrial fibrillation in whom the background cardiac rhythm falsely mimicked sinus rhythm but actually originated from the left superior pulmonary vein. P waves during the ectopic rhythm were flat in lead I, negative in lead aVL, and without a typical "dome-and-dart" feature in precordial leads. Radiofrequency applications inside the left superior pulmonary vein eliminated both atrial fibrillation and the ectopic pacemaker.
Yamane
T
T
Hôpital Cardiologique du Haut-Lévêque, Bordeaux, France. jacques.clementy@pu.u-bordeaux2.fr
Shah
D C
DC
Jais
P
P
Haïssaguerre
M
M
D001281:Atrial Fibrillation / Q000175:diagnosis* / Q000601:surgery; D017115:Catheter Ablation; D004562:Electrocardiography; D006329:Heart Conduction System / Q000502:physiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011667:Pulmonary Veins / Q000473:pathology* / Q000601:surgery