Changes of P wave dispersion on ECG in patients with paroxysmal atrial fibrillation after radiofrequen-cy ablation
10.3969/j.issn.1008-0074.2014.04.29
- VernacularTitle:阵发性房颤患者射频消融术后心电图P波离散度的变化
- Author:
Mao-jing WANG
;
Shang-lang CAI
;
- Publication Type:Journal Article
- Keywords:
Atrial fibrillation;
Catheter ablation;
Electrocardiography
- From:
Chinese Journal of cardiovascular Rehabilitation Medicine
2014;23(4):463-465
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To explore the influence of radiofrequency ablation (RFA)on P-wave dispersion (difference between maximum and minimum P-wave interval)in patients with paroxysmal atrial fibrillation (PAF).Methods:A total of 95 PAF patients underwent circumferential pulmonary vein isolation.The preoperative and postoperative 12-lead ECG were recorded for 24h,maximum P-wave interval (Pmax)and minimum P-wave interval (Pmin)were measured,and P-wave dispersion was calculated.Since three months after operation,patients received outpatient follow up and dynamic ECG every month for six months.The operation was judged for successful or not according to symptoms of atrial fibrillation and dynamic ECG results,and patients were divided into success group (n=70)and recurrence group (n=25).Results:Compared with before operation,there was significant reduction in P-wave dis-persion [(48.84±4.08)ms vs.(42.22±4.02)ms,P <0.01]in all PAF patients after RFA.Compared with be-fore operation,there was significant reduction in P-wave dispersion [(47.63±3.58)ms vs.(40.67±4.82)ms,P<0.01]in success group;and reduction in P-wave dispersion [(49.51±1.64)ms vs.(48.26±3.48)ms]in recur-rence group,but no significant difference (P =0.346).After circumferential pulmonary vein isolation,P-wave dis-persion in success group was significantly lower than that of recurrence group (P <0.01).Conclusion:Circumferen-tial pulmonary vein ablation can improve P-wave dispersion in patients with atrial fibrillation,and it's more signifi-cant for success group.P-wave dispersion can predict the recurrence of atrial fibrillation after circumferential pulmo-nary vein ablation.
