机构地区:[1]天津市第三中心医院心脏中心,天津300170 [2]天津医科大学总医院心内科
出 处:《中国介入心脏病学杂志》2017年第7期379-384,共6页Chinese Journal of Interventional Cardiology
摘 要:目的比较环肺静脉隔离术(CPVI)前后心房各部位有效不应期(ERP)的变化。方法入选2015年4月至2015年12月入住天津医科大学总医院行首次射频消融术(RFCA)的阵发性心房颤动(房颤)患者30例。CARTO 3系统以FAM模式完成右心房(RA)、左心房(LA)电解剖模型构建。并于上腔静脉(SVC)、中位右心房(MRA)、右心耳(RAA)、左心房前壁(LA-A)、左心房顶部(LA-R)、左心房后壁(LA-P)、左心耳(LAA)、左上肺静脉(LSPV)、左下肺静脉(LIPV)、右上肺静脉(RSPV)、右下肺静脉(RIPV)、冠状静脉窦近端(CSp)、冠状静脉窦远端(CSd)定位取点。所有患者均完成双侧CPVI,并达到肺静脉(PV)-LA双向传导阻滞。于CPVI术前、术后应用心房S1S2程序刺激分别测定心房各部位ERP。并计算右心房(RA,包括SVC、MRA、RAA、CSp)、左心房(LA,包括LA-A、LA-R、LA-P、LAA、CSd)、肺静脉(PV,包括LSPV、LIPV、RSPV、RIPV)的ERP。观察CPVI术前、术后心房电生理特性的改变。结果 (1)CPVI术前心房各部位ERP比较:RAA(197.4±28.6)ms最小(P<0.01);其次为PV,分别为LSPV(213.0±47.5)ms、LIPV(208.9±45.9)ms、RSPV(209.3±43.6)ms、RIPV(213.5±48.1)ms和LAA(218.1±27.7)ms。LA、RA及PV比较:PV ERP(211.2±35.2)ms最短,其次为RA ERP(227.0±23.7)ms及LA ERP(241.0±21.5)ms(P<0.05)。(2)CPVI术前、术后各部位比较:RAA[(197.4±28.6)ms比(208.6±32.2)ms,P=0.003],CSp[(234.7±29.1)ms比(246.9±29.7)ms,P=0.007],LA-R[(242.9±28.9)ms比(258.3±26.9)ms,P=0.003],LA-P[(252.2±28.5)ms比(261.1±30.2)ms,P=0.039],CSd[(238.6±28.3)ms比(250.3±23.6)ms,P=0.009]。LA、RA及PV比较:RA[(227.0±23.7)ms比(235.9±21.7)ms,P=0.002),LA[(241.0±21.5)ms比(249.7±19.9)ms,P=0.001),术后ERP均较术前延长。(3)术前共诱发房性心律失常90例次,以RAA(17)、LAA(12)及PV(36)诱发次数多,上述部位ERP均较短。术后共诱发房性心律失常8例次,位于RAA(4)、LAA(3)及SVC(1)。结论 (1)阵发性房颤患者心房各部位ERP比较,以PV、LAA与RAA最短;该部位程序�Objective To investigate the effects of circumferential pulmonary vein isolation( CPVI) on atrial effective refractory period( ERP) in patients with paroxysmal atrial fibrillation. Methods30 patients who underwent radiofrequency catheter ablation for paroxysmal AF were enrolled in this study.Using FAM mode,the RA and LA anatomical models were achieved in the CARTO 3 system. SVC,MRA,RAA,LA-A,LA-R,LA-P,LAA,LSPV,LIPV,RSPV,RIPV,CSp,CSd,were respectively located in the RA or LA anatomical model. Before and after CPVI,ERPs were measured in different locations of the atrium using programmed stimulation. The ERPs of the RA( SVC,MRA,RAA,CSp),LA( LA-A,LAR,LA-P,LAA,CSd),PVs( LSPV,RSPV,LIPV,RIPV) were compared. Bilateral CPVIs were completed in all patients, and PV-LA bidirectional conduction block was achieved. The changes of electrophysiological characteristics of atrium before and after CPVI were observed. Results( 1) ERP at different locations in the atrium before CPVI: Comparisons of ERPs at different locations of atrium: RAA had the minimal ERPs[( 197. 4 ± 28. 6) ms( P〈0. 01); followed by PVs measuring,respectively,LSPV( 213. 0 ± 47. 5) ms,LIPV( 208. 9 ± 45. 9) ms,RSPV( 209. 3 ± 43. 6) ms,RIPV( 213. 5 ±48. 1) ms and LAA( 218. 1 ± 27. 7) ms. Comparisons of ERPs in RA,LA,and PVs showed: PVs had the lowest ERPs( 211. 2 ± 35. 2) ms versus RA ERP( 227. 0 ± 23. 7) ms versus LA ERP( 241. 0 ±21. 5) ms( P〈0. 05).( 2) Comparisons of ERPs before and after CPVI: Comparisons of ERPs at different locations of atrium showed: RAA [( 197. 4 ± 28. 6) ms vs.( 208. 6 ± 32. 2) ms,P = 0. 003 ],CSp[( 234. 7 ± 29. 1) ms vs.( 246. 9 ± 29. 7) ms,P = 0. 007],LA-R [( 242. 9 ± 28. 9) ms vs.( 258. 3 ± 26. 9) ms,P = 0. 003],LA-P [( 252. 2 ± 28. 5) ms vs.( 261. 1 ± 30. 2) ms,P = 0. 039]and CSd [( 238. 6 ± 28. 3) ms vs.( 250. 3 ± 23. 6) ms,P = 0. 009]. ERPs were found statistically prolonged at all different
分 类 号:R541.75[医药卫生—心血管疾病]
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...