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1.
Background Recurrent atrial tachyarrhythmia (ATa) after circumferential pulmonary vein ablation (CPVA) includes atrial tachycardia (AT) and atrial fribrillation (AF). However, whether there are some differences in clinical course and mechanisms between the recurrent AT and the recurrent AF remained unclear. This study was conducted to investigate the incidence, mechanism, clinical course of the recurrent AT and AF in patients under CPVA.Methods One hundred and thirty consecutive patients (M/F=95/35) with highly symptomatic and multiple antiarrhythmic drugs (AADs) refractory paroxysmal (n=91) or persistent (n=39) AF were included. The ablation protocol consisted solely of two continuous circular lesions around the ipsilateral pulmonary veins (PV) guided by CARTO system. The endpoint of CPVA is PV isolation. For patients with recurrent ATa within 2 months after the initial procedure, cardioversion with direct current was attempted if the ATa lasted for more than 24 hours. A repeat ablation procedure was performed only for patients with AADs refractory recurrent ATa and at least followed up for 2 months after the initial procedure.Results Within 2 months after the initial procedure, 52 patients (40.0%) had experienced episodes of symptomatic recurrent ATa. Among them, 23 patients (44.2%) with recurred AT alone (AT group), 14 patients (26.9%) with recurred AF alone (AF group), and 15 patients (28.8%) with recurred AT and AF (AT plus AF group). The delayed cure rate (65.2%) in AT group was significant higher than that in AF group (21.4%, P<0.05) and AF plus AT group (26.7%, P<0.05). A repeat ablation was performed in 21 patients, including 6 patients with recurrent AT alone, 8 patients with recurrent AF alone, and 7 patients with recurrent AF plus AT. The mean number of PV gaps was 1.2±0.4 in AT group, which was significantly lower than that in AF group (2.6±0.7, P<0.05) and AF plus AT group (2.0±0.6, P<0.05). Delayed cure rate and number of PV gaps between AF group and AF plus AT group were comparable (P>0.05).Conclusions Present study indicates that recurrent AT and AF after CPVA have the different clinical course and different electrophysiological findings during repeat procedure as follows: ⑴After CPVA, spontaneous resolution of recurrent ATa was mainly found in patients with recurrent AT alone (about two thirds patients). ⑵The type of recurrent ATa after CPVA is associated with the number of PV gaps. Chin Med J 2005; 118(21):1773-1778  相似文献   

2.
《中华医学杂志(英文版)》2012,125(24):4368-4372
Background  The effects of anxiety and depression on the recurrence of persistent atrial fibrillation (AF) after circumferential pulmonary vein ablation (CPVA) are not clear. Whether CPVA can alleviate the anxiety and depression symptoms of persistent AF patients is unknown.
Methods  One hundred and sixty-four patients with persistent AF, of which 43 treated with CPVA (CPVA group) and 103 treated with anti-arrhythmics drugs (medicine group), were enrolled. The Zung Self-Rating Anxiety Scale (SAS), and Zung Self-Rating Depression Scale (SDS) were assessed before and 12 months after treatment in all patients.
Results  The scores of SAS (40.33±7.90 vs. 49.76±9.52, P <0.01) and SDS (42.33±8.73 vs. 48.17±8.77, P <0.01) decreased 12 months after CPVA. Over 12 months follow-up, AF relapsed in 17 patients in CPVA group. Compared with the data in the recurrent group (17 patients), the scores of SAS and SDS were significantly lower in the non-recurrent group (26 patients) at baseline. The results of multivariate Logistic regression analysis showed normal scores of SAS and SDS were the independent risk factors of AF recurrence after CPVA.

Conclusions  Anxiety and depression increase the recurrence risk of persistent AF after CPVA. CPVA can ameliorate the anxiety and depression symptoms in patients with persistent AF. 

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3.
Background 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. Methods 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 &lt;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.Results Three hundred and fifteen PVs were ablated in 85 patients underwent SPVA approach, 400 circular lesions surrounding ipsilateral PVs (including 790 PVs) were produced in the rest of 200 patients received CPVA approach. Electrical isolation was achieved in all of these PVs. Of these, PVPs were abolished in 89.8% (992/1105) of the ablated PVs, dissociated PV rhythms were documented in the rest 10.2 % (113/1105) of the treated PVs. Among the 113 dissociated PV rhythms, 28 met the criteria of PVT with mean CL of (155±43) ms (2 PVTs in 2 patients received SPVA, 26 PVTs in 18 patients underwent CPVA). PVT was more frequently documented in patients underwent CPVA approach [9.0% (18/200) vs 2.3% (2/85), P=0.04]. During the 6-month follow-up, it was indicated that no significant difference existed in AF free rate between patients with PVT and those without PVT (P=0.75). Conclusions PVT dissociated from LA activations can be documented after PV isolation, especially in patients underwent CPVA approach. However, PVT does not affect the follow-up results.  相似文献   

4.
Background The circumferential pulmonary vein ablation (CPVA) has been proved effective for atrial fibrillation (AF) treatment and is becoming more widely accepted and practiced. This study aims to evaluate the characteristics of the CARTO and the Ensite/NavX system and draw a comparison between them on the aspects of procedural parameters and clinical effectiveness.Methods Seventy-five cases with paroxysmal or chronic symptomatic AF were randomly assigned to CPVA procedure guided by the Ensite/NavX system (group Ⅰ, n=40) and by the CARTO system (group Ⅱ, n=35). After successful transseptal procedure, the geometry of left atrium was created under the guidance of the two systems. Radiofrequency energy was applied to circumferentially ablate tissues out of pulmonary veins’ (PVs’) ostia. In cases with chronic AF, linear ablation was applied to modify the substrate of left atrium (LA). The endpoint of the procedure was complete PVs isolation. Results Seventy-five cases underwent the procedure successfully. The total procedure and fluoroscopic durations in group Ⅱ were significantly shorter than in group Ⅰ [(150±23) min and (18±17) min versus (170±34) min and (25±16) min, P=0.03 and 0.04, respectively]. There was no significant difference in the fluoroscopic and procedure durations for geometry creation between group Ⅰ and group Ⅱ [(8±4) min and (16±11) min versus (5±4) min and (14±8) min, respectively]. The fluoroscopic durations for CPVA were (15±5) min in group Ⅰ versus (10±6) min in group Ⅱ (P=0.05), and the CPVA procedural durations were significantly shorter in group Ⅱ than in group Ⅰ [(18±11) min versus (25±10) min, P=0.04]. AF was terminated by radio frequency delivery in 14 cases (35%) in group Ⅰ versus 5 cases (14%) in group Ⅱ (P=0.035). After CPVA complete PV isolation was attained in 26 cases (65%) in group Ⅰ versus 11 cases (31%) in group Ⅱ (P=0.004). During a mean follow-up of 7 months, 32 (80%) cases in group Ⅰ and 24 (69%) cases in group Ⅱ were arrhythmia-free (P=0.06). One case developed pericardium effusion and another one case was found to have intestinal artery thrombosis in group Ⅱ. One case had moderate hemothorax in group Ⅰ. All the complications were cured by proper treatment. No PV stenosis was observed. Conclusions The CPVA procedure for atrial fibrillation is effective and safe. Although there is difference between the CARTO and the Ensite/NavX system, the CPVA procedure guided by either of them yields similar clinical results.  相似文献   

5.
Objective To investigate the feasibility and effectiveness of radiofrequency catheter ablation (RFCA) to treat permanent atrial fibrillation (AF) under the guidance of Carto-Merge technique. Methods Fifteen male patients with permanent AF underwent RFCA under the guidance of Carto-Merge technique. The mean age was 54.00±10.44 years, and duration of AF was 23.66±14.93 months. Cardiac magnetic resonance angiography (MRA) was performed to obtain pre-procedural three-dimensional (3D) images on the anatomy of left atrium (LA) and pulmonary veins (PVs) before RFCA procedure. Then the electroanatomical map was integrated with 3D images of MRA to form Carto-Merge map that guided step-by-step ablation strategy of permanent AF. Circumferential PV ablation was performed first until complete PVs electric isolation confirmed by Lasso catheter. If AF was not terminated, lesion lines on roof of LA, mitral isthmus, and tricuspid isthmus were produced. Results The episodes of AF were terminated during RFCA in 2 patients, by direct current cardioversion in the remaining 13 patients. Transient AF occurred in 2 patients after ablation on 1st day and 1st week respectively, AF terminated spontaneously not long after taking metoprolol. One patient developed persistent atrial flutter (AFL) in 2 months after procedure and AFL was eliminated by the second ablation. Persistent AF recurred on 1st day, 1st and 5th week respectively in 3 patients, and did not terminate after 3 months even though amiodarone was given. The remaining 12 patients were all free of AF during 2-11 months of follow-up. The recent success rate for RFCA of permanent AF was 80%. Conclusions Carto-Merge technique can effectively guide RFCA of permanent AF. When combined with single Lasso mapping, it can simplify the mapping, lower expenses, and enhance the success rate of RFCA of permanent AF.  相似文献   

6.

Background  Patients with persistent or permanent atrial fibrillation (AF) often need direct current cardioversion after radiofrequency ablation. The aim of this study was to investigate the effectiveness and safety of ibutilide for cardioversion of persistent or permanent atrial fibrillation after radiofrequency ablation and the factors related to conversion.

Methods  Patients with persistent or permanent atrial fibrillation were treated with combined ablation strategy including circumferential pulmonary vein isolation, linear ablation and CAFÉ potential ablation. If AF was not terminated after ablation, ibutilide was used for cardioversion (1 mg, intravenous injection in 10 minutes). These patients were divided into a conversion group and a non-conversion group according to whether AF was converted to sinus rhythm within 30 minutes after administration. ECG monitoring was performed during the injection of ibutilide. Atrial waves recorded by coronary sinus electrodes were measured for calculating average wavelength of AF waves in six seconds. The QT interval was measured immediately after conversion and 2 hours after injection of ibutilide.

Results  Forty patients whose AF was not converted to sinus rhythm after radiofrequency ablation were given an intravenous injection of ibutilide. Of the 40 patients, 29 cases were converted to sinus rhythm, with a conversion rate of 72.5%. The average conversion time was (13.2±5.5) minutes. Compared with the conversion group, patients in the non-conversion group had a longer history of AF (9.4±5.3) years vs. (4.3±2.8) years, P <0.05), and a markedly enlarged left atrium (47.3±2.9) mm vs. (42.1±4.5) mm, P <0.05). There were no significant differences in gender, age, body mass index and left ventricular function between the two groups. Ibutilide significantly prolonged the average wavelength of the AF wave (171.8±29.5) ms vs. (242.0±40.0) ms, P <0.001). Two hours after ibutilide treatment, the QT interval was significantly shortened (421.0±24.7) ms vs. (441.0±37.4) ms, P <0.05). No cases of serious arrhythmias or other adverse reactions were found.

Conclusions  A single dose of ibutilide for conversion of persistent or permanent AF after radiofrequency ablation is safe and effective.

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7.
Objective To detect the feasibility and theoretic basis for treatment with hyperbaric oxygenation (HBO) in chronic hepatitis and to compare the changes in hepatic function, immunity, pathologic morphology, ultrastructure and HBV in hepatic tissues before and after treatment. Methods Sixty cases of chronic hepatitis were randomly selected and divided into two groups: the experiment (n=30) and control groups (n=30). Patients in the experimental group were treated with HBO for 6 courses. Patients in the control group were treated for 60 days with the usual drugs used in the clinic. The function and bloodstream graph of liver were examined and liver biopsies were made before and after treatments. Routine paraffin sections were stained with HE and observed under the light microscope. Ultra thin slides from paraformaldehyde and glutaraldehyde fixed liver tissue were stained with lead citrate and observed with the transmission electric microscope. HBsAg and HBcAg in liver of the experimental group were detected with ABC immunohistochemistry method before and after treatment. Results For the experimental group, ALT, SB, γ-GT, AKP, IgG, and IgM in blood and the degeneration and necrosis of hepatocytes were remarkably decreased (P&lt;0.05), the mean contractive wave of bloodstream in liver and the bloodstream in right ramus of janitrix were remarkably increased (P&lt;0.05), and the swelling of mitochondria, increase of lysosomes, generation of Kupffer cells, infiltration of lymphocytes in portal area and capillary generation were all remarkably alleviated (P&lt;0.05) after treatment with HBO. There were significant differences between the experimental and control groups after treatment with different methods (P&lt;0.05). For patients in the experimental group, the fibrosis and fat-storing cells in the liver were not reduced (P&gt;0.05), and the expression of HBsAg and HBcAg in liver was not weakened (P&lt;0.05) after treatment. Conclusions Treatment with HBO for chronic hepatitis was effective and recommendable, but it could not reverse liver fibrosis. However, it might be able to delay or prevent the liver from fibrosis, so it might be more effective at the early and middle stages of chronic hepatitis. HBO could not inhibit the HB virus. So we consider that treatment with HBO should be simultaneous with anti HBV therapy.  相似文献   

8.
Objective To investigate the pathogenesis of thromboembolism in patients with mitral stenosis in a pre-thrombotic state.Methods The biochemical markers’ levels in plasma for platelet activity [soluble P-selectin (GMP-140)], states of thrombin generation [antithrombin Ⅲ (AT Ⅲ) and protein C (PC)], fibrinolysis [D-dimer (DD), plasminogen activator inhibitor 1 (PAI-1), tissue plasminogen activator (t-PA) and FDP] and von Willebrand factor (vWF) were determined from blood specimens obtained from the femoral veins and arteries and the right and left atria of 43 consecutive patients (20 with atrial fibrillation and 23 with sinus rhythm) with mitral stenosis (MS), undergoing percutaneous mitral valvuloplasty. The same parameters were compared with those of 15 control subjects, who had no detectable heart disease, but with paroxysmal supraventricular tachycardia undergoing radiofrequency catheter ablation of the left accessory pathway through a transseptal passage. Results Blood from the left atrium contained an excessive amount of platelet activity, thrombin generation and fibrinolysis compared with the blood from the right atrium, and the femoral veins and arteries. However blood from the right atrium was much lower in these activities when compared with those from the left atrium, and the femoral veins and arteries in both groups. Compared with those in the control subjects, GMP-140 in the left atrium was significantly higher (P&lt;0.05) and AT Ⅲ was significantly lower (P&lt;0.05) in patients with MS. Compared with the patients with MS and spontaneous left atrial echocontrast (LASEC)≤1, the patients with MS and LASEC≥2 had significantly higher levels of GMP-140 in plasma (P&lt;0.05), and significantly lower levels of AT Ⅲ (P&lt;0.05) and PC (P&lt;0.01) levels in the left atrium. However, there were no significant differences between patients with atrial fibrillation and those with sinus rhythm regarding amounts of plasma coagulation markers in the left atrium. Univariate regression analysis revealed that LASEC was negatively correlated with plasma levels of blood from the left atria in the patients with MS. Conclusion Coagulability is increased in the left atria of patients with MS and is positively correlated with LASEC.  相似文献   

9.
Background  Major atrial coronary arteries, including the sinus node artery (SNA), were commonly found in the areas involved in atrial fibrillation (AF) ablation and could cause difficulties in achieving linear block at the left atrial (LA) roof. The SNA is a major atrial coronary artery of the atrial coronary circulation. This study aimed to determine impact of the origin of SNA on recurrence of AF after pulmonary vein isolation (PVI) in patients with paroxysmal AF.
Methods  Seventy-eight patients underwent coronary angiography for suspected coronary heart disease, followed by catheter ablation for paroxysmal AF. According to the origin of SNA from angiographic findings, they were divided into right SNA group (SNA originating from the right coronary artery) and left SNA group (SNA originating from the left circumflex artery). Guided by an electroanatomic mapping system, circumferential pulmonary vein ablation (CPVA) was performed in both groups and PVI was the procedural endpoint. All patients were followed up at 1, 3, 6, 9 and 12 months post-ablation. Recurrence was defined as any episode of atrial tachyarrhythmias (ATAs), including AF, atrial flutter or atrial tachycardia, that lasted longer than 30 seconds after a blanking period of 3 months.
Results  The SNA originated from the right coronary artery in 34 patients (43.6%) and the left circumflex artery in 44 patients (56.4%). Freedom from AF and antiarrhythmic drugs (AADs) at 1 year was 67.9 % (53/78) for all patients. After 1 year follow-up, 79.4% (27/34) in right SNA group and 59.1% (26/44) in left SNA group (P=0.042) were in sinus rhythm. On multivariate analysis, left atrium size (HR=1.451, 95%CI: 1.2401.697, P <0.001) and a left SNA (HR=6.22, 95%CI: 2.01–19.25, P=0.002) were the independent predictors of AF recurrence.
Conclusions  The left SNA is more frequent in the patients with paroxysmal AF. After one year follow-up, the presence of a left SNA was identified as an independent predictor of AF recurrence after CPVA in paroxysmal AF.
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10.
Objective To investigate the influence and mechanism of incidence of atrioventricular bloc k (AVB) treated with thrombolytic therapy in acute inferior myocardial infarcti on (AIMI). Methods A total of 46 patients with AIMI were divided into the thrombolytic group (n=23 ) and the non-thrombolytic group (n=23). Intravenous or intracoronary urokinas e was given to the former group. We observed the advancing courses of AVB, an d further assessed the relationship between occurrence of AVB and stenosis of in farct-related artery (IRA) with coronary angiography. Results Two cases died of Ⅲ° AVB in the non-thrombolytic group, but none was fo un d in the thrombolytic group. The occurrence rate of AVB was similar in both gro ups; but that of Ⅲ° AVB was much lower in the thrombolytic group (4 cases) than that in the non-thrombolytic group (11 cases, P&lt;0.05), and the durat ion of AVB decreased from 201±113 hours to 102±60 hours after thrombolytic the rapy (P&lt;0.01), which was mainly due to the decrease of AVB in the vanishin g interval, but not in the developing interval. The coronary angiography demon strated that there were an increasing reperfusion flow and a decreasing coronar y stenosis of the infarct-related artery after thrombolytic therapy. Conclusion Thrombolytic therapy can reduce the incidence of severe AVB, shorten its durat ion and decrease the mortality by increasing the coronary reperfusion flow in th e patients with AIMI.  相似文献   

11.
Background Recurrent atrial tachyarrhythmia (ATa) after circumferential pulmonary vein ablation (CPVA) includes atrial tachycardia (AT) and atrial fribrillation (AF). However, whether there are some differences in clinical course and mechanisms between the recurrent AT and the recurrent AF remained unclear. This study was conducted to investigate the incidence, mechanism, clinical course of the recurrent AT and AF in patients under CPVA.Methods One hundred and thirty consecutive patients (M/F=95/35) with highly symptomatic and multiple antiarrhythmic drugs (AADs) refractory paroxysmal (n=91) or persistent (n=39) AF were included. The ablation protocol consisted solely of two continuous circular lesions around the ipsilateral pulmonary veins (PV) guided by CARTO system. The endpoint of CPVA is PV isolation. For patients with recurrent ATa within 2 months after the initial procedure, cardioversion with direct current was attempted if the ATa lasted for more than 24 hours. A repeat ablation procedure was performed only for patients with AADs refractory recurrent ATa and at least followed up for 2 months after the initial procedure.Results Within 2 months after the initial procedure, 52 patients (40.0%) had experienced episodes of symptomatic recurrent ATa. Among them, 23 patients (44.2%) with recurred AT alone (AT group), 14 patients (26.9%) with recurred AF alone (AF group), and 15 patients (28.8%) with recurred AT and AF (AT plus AF group). The delayed cure rate (65.2%) in AT group was significant higher than that in AF group (21.4%, P<0.05) and AF plus AT group (26.7%, P<0.05). A repeat ablation was performed in 21 patients, including 6 patients with recurrent AT alone, 8 patients with recurrent AF alone, and 7 patients with recurrent AF plus AT. The mean number of PV gaps was 1.2±0.4 in AT group, which was significantly lower than that in AF group (2.6±0.7, P<0.05) and AF plus AT group (2.0±0.6, P<0.05). Delayed cure rate and number of PV gaps between AF group and AF plus AT group were comparable (P>0.05).Conclusions Present study indicates that recurrent AT and AF after CPVA have the different clinical course and different electrophysiological findings during repeat procedure as follows: ⑴After CPVA, spontaneous resolution of recurrent ATa was mainly found in patients with recurrent AT alone (about two thirds patients). ⑵The type of recurrent ATa after CPVA is associated with the number of PV gaps.  相似文献   

12.
目的 探讨个体化消融原则的临床效果及右房的作用.方法 房扑/房颤患者82例,男性42例,女性40例,年龄18~77(48.5±10.3)岁,左房内径26~52(35.4±5.3)mm.其中53例为阵发性房颤,14例为持续性房颤,15例为典型房扑.所有患者在Carto指导下进行个体化消融原则,以房扑/房颤被终止且不被诱发、肺静脉电位消失为消融终点.随访成功的定义为未服用抗心律失常药物、无任何症状性房性心律失常发作至少3个月.结果 ①随访时间3~28(13.4±3.3)个月,房扑和阵发性房颤消融随访成功率88.2%,持续性房颤仅为57.1%(P<0.05).2例有心包压塞,1例合并假性动脉瘤.无肺静脉狭窄等血管严重并发症.②阵发性房颤53例,其中10例为局灶性房早、短阵房速诱发的房颤(4例病灶位于右房内),8例行靶静脉线性消融,这类亚组手术无任何心律失常发作.其余43例阵发性房颤患者均行环肺静脉线性消融术,合并典型(4例)和非典型(6例)房扑者外加三/二尖瓣峡部消融.③15例典型房扑(4例为持续性房扑)患者,均行三尖瓣峡部消融,4例合并房颤者外加双侧肺静脉线性消融.④14例持续性房颤均经历了消融由房颤转变为房扑的过程,6例被消融终止和8例电复律复为窦律,半数分别进行了三/二尖瓣峡部消融和冠状静脉窦内消融,2例合并了起源于右房的房扑和房速.结论 Carto指导下房颤/房扑个体化消融可获得较好的临床疗效,右房的作用不能忽略.  相似文献   

13.
环肺静脉加辅助径线消融治疗持续性和永久性心房颤动   总被引:2,自引:0,他引:2  
目的 评估环肺静脉加辅助径线消融治疗持续性和永久性心房颤动(房颤)的有效性和安全性,分析房颤消融后复发的危险因素.方法 通过多中心临床注册研究的方式收集全国2006年1月至2006年12月期间行环肺静脉加辅助径线消融治疗持续性和永久性房颤的127例病例资料,分析环肺静脉加辅助径线消融治疗持续性和永久性房颤的成功率和复发率,对心脏功能和房性心律失常的影响,以及并发症发生情况.将临床和超声影像学指标作为待选变量,探讨消融后房颤复发的危险凶素.结果 在平均(94±4)个月随访期间,成功率为68.5%,复发率为31.5%.消融成功的患者术后左心房内径[(41±8)mm vs(43±7)mm]、左心室舒张末期直径[(49±7)mm vs(48±6)mm]和左心室射血分数[(61±8)%vs(62±10)%]较术前无明显改变(均P>0.05).消融后房性心动过速和房性早搏有所增加(P<0.05和P<0.01).消融并发症为皮下血肿3例(2.4%).与复发相关的危险因素有女性(P<0.05)和左心房增大(P<0.05).结论 环肺静脉加辅助径线消融治疗持续性和永久性心房颤动安全性好,具有较好的有效性.  相似文献   

14.
目的 对阵发性心房颤动(简称房颤)患者行球囊冷冻消融后复发房性快速性心律失常的电生理机制进行初步探讨.方法 连续入选阵发性房颤行球囊冷冻消融后复发房性快速性心律失常、并行再次消融的患者.术中使用三维电解剖标测系统,先对左心房进行电压标测,判断各支肺静脉及肺静脉前庭是否仍有电传导,若有,则行射频消融,完成肺静脉及肺静脉前庭的电隔离.之后,在患者自发或诱发心律失常条件下,寻找肺静脉以外的病灶.对于稳定性心律失常,消融其局部病灶或关键峡部;若为持续房颤,则消融左心房后顶部线及后底部线,尽量实现消融线的双向阻滞.结果 共有43例患者入选,男性28例(65. 1%),平均年龄(65. 9±11. 8)岁. 43例患者共175支肺静脉,其中6例患者(14. 0%)共计12支肺静脉(6. 9%)仍有电传导. 27例(62. 8%)患者虽肺静脉内已实现电隔离,但肺静脉前联合或后联合处的前庭部位仍有电传导,具体表现: 左侧前联合21例,左侧后联合18例,右侧前联合25例,右侧后联合17例. 10例患者有非肺静脉病灶,其中5例位于右心房,5例位于左心房.结论 肺静脉前庭的前、后联合部位仍存在电传导,是球囊冷冻消融术后复发房性快速性心律失常最常见的电生理现象.  相似文献   

15.
环肺静脉线性消融治疗慢性心房颤动疗效分析   总被引:4,自引:0,他引:4  
Ma CS  Liu X  Dong JZ  Yu RH  Wang XH  Liu XP  Shi HF  Long DY  Fang DP  Hu FL  Tang RB 《中华医学杂志》2006,86(16):1111-1114
目的探讨三维标测系统指导下环肺静脉线性消融治疗慢性心房颤动(房颤)的疗效和安全性。方法2004年8月至2005年11月间对连续100例慢性房颤患者进行三维标测系统(CARTO系统或EnSiteNavXTM系统)指导下的环肺静脉线性消融,消融的主要终点为肺静脉电学隔离。随访成功的定义为未服用抗心律失常药物无任何房性心律失常发作至少3个月以上。统计相关变量,分析影响成功率的因素。结果平均随访9·7±5·7个月,累计成功率为70%(70例)。复发患者中峡部消融比例及平均射血分数均低于无房颤复发的患者。主要并发症包括心脏压塞3例(3%)、脑卒中1例(1%)、无症状性肺静脉狭窄2例(2%)。结论三维标测系统指导下环肺静脉线性消融治疗慢性房颤疗效较好,安全性有待进一步提高。  相似文献   

16.
目的:分析环肺静脉消融治疗老年患者心房颤动的有效性和安全性,并分析其术后复发危险因素。方法:通过多中心临床注册研究的方式分析全国2006年1-12月460例行环肺静脉消融治疗老年房颤患者(年龄≥60岁)的有效病例资料,观察手术的成功率、复发率和并发症发生情况,并分析其复发危险因素。结果:在平均(9.0±3.7)月的随访期间,环肺静脉消融治疗老年患者心房颤动的成功率为75.9%,复发率为24.1%。阵发性房颤、持续性房颤和永久性房颤成功率分别为77.1%、69.4%和55.6%。消融总的并发症发生率为3.0%,其中心包压塞7例(1.5%),皮下血肿5例(1.1%),感染1例(0.2%),脑卒中1例(0.2%)。术前左房内径增大是消融后房颤复发的危险因素(P<0.01)。结论:环肺静脉消融治疗老年患者心房颤动具有较好的有效性和安全性,术前左房内径增大是消融后房颤复发的危险因素。  相似文献   

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