PMID: 16620695Apr 20, 2006Paper

Pulmonary vein tachycardia after pulmonary vein isolation in patients with atrial fibrillation

Chinese Medical Journal
Chang-sheng MaChun-shan Lu

Abstract

Pulmonary vein (PV) isolation has been developed to treat patients with atrial fibrillation (AF), and the electrophysiological endpoint of PV isolation is the disappearance or dissociation of pulmonary vein potentials (PVPs). Pulmonary vein tachycardia (PVT) is the dissociated PV rhythm with a rapid rate. However, the characteristics and significance of PVT after pulmonary vein isolation in patients with AF remains unclear. From June 2003 to June 2005, a total of 285 consecutive patients with drug refractory AF were included in this study, and they underwent segmental pulmonary vein ablation (SPVA) or circumferential pulmonary vein ablation (CPVA). PV isolation was the initial endpoint for both approaches with documenting disappearance or dissociation of PVPs. PVT was characterized as dissociated activities within PVs with a circle length (CL) of < 300 ms, and was classified into organized PVT or disorganized PVT according to the variance of CL. Systematic follow-up was conducted after initial procedures. Continuous variables were analyzed by Student's t test and categorical variables were analyzed by chi-square test. Three hundred and fifteen PVs were ablated in 85 patients underwent SPVA approach, 400 circular lesions surroun...Continue Reading

References

May 14, 2003·Journal of Cardiovascular Electrophysiology·Julián VillacastínRosa González
Jun 26, 2003·Pacing and Clinical Electrophysiology : PACE·Hakan OralFred Morady
Aug 14, 2003·Pacing and Clinical Electrophysiology : PACE·Niranjan SeshadriAndrea Natale
Oct 3, 2003·Journal of the American College of Cardiology·Sabine ErnstKarl-Heinz Kuck
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