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目的 探讨心房总传导时间(TACT)与阵发性心房颤动(简称房颤)导管射频消融术(RFCA)后复发的关系.方法 入选2012~2014年行RFCA的阵发性房颤患者116例,TACT测定即在术前基础心律为窦性心律时,脉冲多普勒采样容积放在二尖瓣环上的左房侧壁,从体表心电图Ⅱ导联P波的起始时间至组织多普勒追踪A’波波峰的时间(PAGTDI)间期,测定3个心动周期,取其平均值,术后3个月空白期后评定治疗效果并随访6个月.根据随访结果将患者分成复发组和未复发组.结果 随访结束,116例患者中29例(25%)患者复发,复发组TACT较未复发组长[(144±23)msvs(124±20)ms,P<0.001)],多因素分析发现TACT是预测阵发性房颤RFCA术后复发的独立因素(OR=1.045,95%CI1.021~1.073,P<0.001).结论 TACT可用于预测阵发性房颤射频消融术后复发.
Objective To investigate the relationship between total atrial conduction time (TACT) and recurrence of paroxysmal atrial fibrillation (RFCA) after radiofrequency catheter ablation (RFCA) .Methods 116 patients with paroxysmal atrial fibrillation who underwent RFCA from 2012 to 2014, TACT measurement that preoperative basic rhythm of sinus rhythm, the pulse Doppler sampling volume on the left atrial wall on the mitral valve annulus, from the body surface ECG Ⅱ lead P wave start time to tissue Doppler The patients were divided into recurrence group (PAGTDI), 3 cardiac cycles (mean, 3 months after surgery) And no recurrence group.Results At the end of follow-up, 29 (25%) of 116 patients had recurrent TACT compared with those without recurrence (144 ± 23 ms vs 124 ± 20 ms, P <0.001) Multivariate analysis revealed that TACT was an independent predictor of recurrence after paroxysmal atrial fibrillation (OR = 1.045, 95% CI 1.021 to 1.073, P <0.001) .Conclusion TACT can be used to predict radiofrequency ablation of paroxysmal atrial fibrillation After the recurrence.