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Purpose

Arrhythmia recurrence following pulmonary vein isolation (PVI) occurs predominantly due to the reconnection of previously isolated pulmonary veins (PVs). The prognostic implications of detection and treatment of acute PV reconnection are not well understood. We aim to examine the prognostic significance of acute PV reconnection on arrhythmia recurrence at 1 year following PVI.

Methods

This prospective study included 44 patients (22 men, 60?±?7 years) who underwent index PVI procedure for treatment of atrial fibrillation (AF). Acute PV reconnection and/or dormant PV conduction were assessed sequentially in response to a 30-min waiting period, intravenous isoproterenol infusion and/or adenosine. All cases of acute PV reconnection and/or dormant conduction were successfully targeted with additional ablation.

Results

Freedom from AF at 1 year was 75 % (83.3 % in paroxysmal and 65 % in persistent AF, p?=?ns). Acute PV reconnection and/or dormant conduction were evident in 16 of 44 patients (36.3 %). AF recurrence was documented in eight of 16 patients with, but only in three of 28 patients without acute reconnection (p?=?0.009). Three patients underwent a redo procedure, all from the group of patients with acute PV reconnection. In a multivariate model, acute PV reconnection was a strong independent predictor of arrhythmia recurrence (hazards ratio [HR], 6.36; 95 % confidence interval [CI], 1.12–31.6).

Conclusion

Identification of acute PV reconnection, even when successfully targeted, is a strong predictor of arrhythmia recurrence following PVI.  相似文献   

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Left Atrial Stiffness and Atrial Fibrillation . Introduction: An increased left atrial (LA) stiffness reflects the structural remodeling and deterioration of the LA function. This study was designed to estimate LA stiffness by measuring a combination of the strain and LA pressure in patients undergoing pulmonary vein isolation (PVI) of atrial fibrillation (AF) and to evaluate the influence of the LA stiffness on the cardiac function, serum markers, and recurrence of AF after PVI. Methods: In 155 consecutive patients with AF, the brain natriuretic peptide (BNP) and aminoterminal procollagen type III propeptide (PIIIP) plasma levels were measured before the PVI. The difference between the minimum and maximum LA systolic pressures was directly measured by a transseptal puncture. The ratio of the difference in the LA pressures to the peak systolic LA strain evaluated by speckle‐tracking echocardiography was used as an index of the LA stiffness. Results: The calculated LA stiffness index was related to the BNP level (rs= 0.444, P < 0.001), E/E′ ratio (rs= 0.444, P < 0.001), LA volume index (rs= 0.370, P < 0.001), and PIIIP level (rs= 0.305, P = 0.002). During a mean follow‐up period of 33.8 ± 12.2 months, 45 patients (29%) presented with AF recurrences. A Cox proportional hazard regression analysis showed the LA stiffness index was an independent predictor of recurrence of AF (HR 2.88; 95% CI 1.75 to 4.73, P < 0.001). Conclusions: In patients with AF, the LA stiffness index is related to left ventricular diastolic dysfunction, LA dilatation, and collagen synthesis and may predict AF recurrences after PVI. (J Cardiovasc Electrophysiol, Vol. 22, pp. 999‐1006, September 2011)  相似文献   

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目的探讨环肺静脉射频消融(CPVA)治疗心房颤动(简称房颤)患者术前血浆大内皮素-1(big ET-1)浓度能否预测术后房颤复发。方法 119例房颤患者接受单一术者进行的单次CPVA手术,其中阵发性房颤75例,持续性房颤44例。房颤复发定义为随访期内心电图和/或24h动态心电图证实房颤发作持续时间≥30s。术前血浆big ET-1浓度测定应用酶联免疫吸附分析法测定。结果在28±12个月的随访中,CPVA术后房颤复发率为30.3%(36/119),其中阵发性房颤为25.3%(19/75),持续性房颤为38.6%(17/44)。房颤复发患者术前血浆bigET-1浓度升高明显(1.29±0.77fmol/ml vs 0.66±0.49fmol/ml,P<0.001),无论是阵发性房颤(1.30±0.69fmol/ml vs 0.61±0.40fmol/ml,P=0.001),还是持续性房颤(1.29±0.87fmol/ml vs 0.78±0.63fmol/ml,P=0.007)均升高。多因素Logistic回归分析显示:血浆bigET-1与消融后房颤复发有关,能独立预测房颤复发(P<0.001)。亚组分析显示:阵发性房颤患者血浆bigET-1浓度升高与消融后房颤复发有关(P=0.001);持续性房颤患者血浆bigET-1浓度升高不能预测CPVA术后房颤的复发。结论 CPVA术前血浆bigET-1水平升高可能是阵发性房颤术后房颤复发的预测因素。  相似文献   

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目的探讨环肺静脉射频消融(CPVA)治疗心房颤动(房颤)患者消融术前血浆高敏C反应蛋白(hsCRP)浓度能否预测术后房颤复发。方法121例房颤患者接受单一术者进行的单次CPVA术,其中阵发性房颤77例,持续性房颤44例。房颤复发定义为随访期内心电图和/或24h动态心电图证实房颤发作持续时间≥30s。应用酶联免疫法测定血浆hsCRP浓度。结果在5~44(28±12)个月的随访中,单次CPVA术后房颤复发率为29.75%(36/121),其中阵发性房颤为24.68%(19/77),持续性房颤为38.6%(17/44)。房颤复发患者无论是阵发性房颤[(2.16±1.51)mg/L对(1.27±1.19)mg/L,P=0.028],还是持续性房颤[(2.59±1.52)mg/L对(1.45±1.32)mg/L,P=0.005],消融术前血浆hsCRP浓度均较高[(2.36±1.51)mg/L对(1.33±1.23)mg/L,P〈0.001]。多因素Logistic回归分析显示,血浆hsCRP浓度升高与消融术后房颤复发有关,能独立预测房颤复发(P〈0.001)。结论CPVA术前血浆hsCRP浓度升高与术后房颤复发有关,可能是术后房颤复发的独立预测因素。  相似文献   

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目的探讨Lasso标测导管指导下行节段性肺静脉电隔离术后心房颤动(房颤)早期复发和延迟愈合的相关因素。方法120例[男性104例,女性16例;平均年龄(50.4±8.9)岁]行节段性肺静脉电隔离术的房颤患者,单因素和多因素分析老龄(≥60岁)、性别、房颤类型、病史、合并高血压、左心房直径、射血分数、P波离散度、被隔离肺静脉数及手术时间与早期复发和延迟愈合的相关性。结果早期复发率为48.3%(58/120),左心房扩大(P=0.004)和老龄(P=0.033)与早期复发显著相关,左心房直径是早期复发的独立预测因素(OR=1.16,95%CI为1.04~1.28,P=0.005);延迟愈合率为29.3%(17/58),与延迟愈合显著相关的变量为:P波离散度(P<0.001)、左心房直径(P=0.016)、老龄(P=0.001)。P波离散度是延迟愈合的独立预测因素(OR=0.92,95%CI为0.87-0.97,P=0.005)。结论左心房扩大、老龄与肺静脉隔离术后房颤早期复发有关,左心房直径是早期复发的独立预测因素;P波离散度较小、左心房无扩大的低龄患者延迟愈合的可能性较大,P波离散度是延迟愈合的独立预测因素。  相似文献   

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Atrial fibrillation (AF) is known to cause platelet activation. AF and its degree of thrombogenesis could be associated with monocyte-platelet aggregates (MPAs). We investigated on whether the content of MPAs or other platelet activation markers is associated with the recurrence of AF after pulmonary vein isolation (PVI). A total of 73 patients with symptomatic AF underwent PVI. After 6 months, all patients were evaluated for episodes of AF recurrence. At the same time, flow-cytometric quantification analyses were performed to determine the content of MPAs. Further platelet activation parameters were detected by using either cytometric bead arrays or quantitative immunological determination. Patients with recurrent AF (n = 20) compared to individuals without AF relapse (n = 53) were associated with an increased content of MPAs (43 ± 3% vs. 33 ± 2%, p = 0.004), as well as an increased CD41 expression on monocytes (191 ± 20 vs. 113 ± 6, p = 0.001). The level of the soluble platelet activation markers such as D-dimer, sCD40L, and sP-selectin did not differ between these groups. The content of MPAs correlated weakly with the level of sCD40L (r = 0.26, p = 0.03), but not with sP-selectin and D-dimer, whereas sP-selectin and sCD40L correlated with each other (r = 0.38, p = 0.001). Only the cellular marker of platelet activation, the content of MPAs, was increased in patients with recurrent AF after PVI. In contrast, soluble markers remained unaltered. These data indicate a distinct mechanism and level of platelet activation in AF. The clinical relevance of MPAs in identifying AF recurrence or in guiding the therapy with anticoagulants remains to be elucidated.  相似文献   

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Conduction recovery after pulmonary vein isolation for atrial fibrillation.   总被引:2,自引:0,他引:2  
BACKGROUND: Although pulmonary vein (PV) isolation is useful for curing atrial fibrillation (AF), its recurrence rate is still high, so the aim of the present study was to investigate the cause of recurrence after PV isolation. METHODS AND RESULTS: Eighty-five patients with paroxysmal AF underwent PV isolation and AF recurred in 48 patients after the first session. Thirty of these 48 patients who underwent a second session were evaluated. In 49 (71%) of 69 PVs ablated in 25 patients (83%), recovery of conduction was observed between the left atrium and PV. In 45 (92%) of 49 PVs, conduction recurrences were seen from the same segment or part of a segment that was ablated in the first session. However, in the other 4 PVs (8%), conduction recurrences occurred in a different segment that had not been ablated before. In the second session, the mean number of segments ablated in the PV ostium was significantly less than in the first session (2.3+/-5.0 vs 1.4+/-6.0, p<0.01). After the second session, 16 patients (53%) did not show recurrence of AF. CONCLUSION: The major cause of recurrence of PV isolation was recovery of PV conduction from the same segment that had been ablated in the PV ostium. Therefore, an additional session may be necessary to increase the success rate.  相似文献   

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《Heart rhythm》2022,19(12):2044-2050
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BACKGROUND: A persistent left superior vena cava (SVC) can be an arrhythmogenic source in patients with atrial fibrillation (AF) through connections from the coronary sinus (CS) and the left atrium (LA). The left SVC can be electrically isolated. However, little clinical data about the impact of left SVC disconnection on AF outcome are available. We report on six patients with left SVC and recurrent AF. OBJECTIVES: The purpose of this study was to assess the impact of left SVC isolation on AF recurrence. METHODS: Six patients (4 men and 2 women; age 50 +/- 6.4 years) with symptomatic drug-refractory AF and persistent left SVC presented to our laboratory for treatment. Four of the patients had left SVC isolation only because there was no conduction recovery in the pulmonary veins (PVs) after several previous procedures. RESULTS: Conduction between the left SVC and the CS and LA was documented, as was spontaneous ectopies in three patients that degenerated into AF in one patient. Isolation of the left SVC was successful in all patients. Isolation was relatively easy to perform (10.25 +/- 1.6 minutes), with no complications. After follow-up of 13 +/- 7.4 months, all patients were in sinus rhythm and free from AF without antiarrhythmic drugs. CONCLUSION: This study stresses the importance of looking for unusual sources of AF in patients presenting for repeat procedures or in those in whom the PVs have been ruled out as a source triggering AF. We present clinical evidence that in patients with AF and left SVC, isolation of the PVs only may not be sufficient to suppress AF. Thus, diagnosis and isolation of the left SVC appears critical to preventing AF recurrence in patients with AF when ablation is considered.  相似文献   

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目的 评价P波间期对阵发性房颤射频消融术后复发的影响.方法 100例药物治疗无效的症状性阵发性房颤患者,在Ensite Velocity三维标测系统指导下行环肺静脉前庭线性消融,消融终点为肺静脉电隔离.结果 术中肺静脉隔离率100%.术后随访(14.0±5.5)个月,其中72例成功维持窦性心律(窦律维持组),28例复发(复发组).复发组最大P波间期及P波离散度均较窦律维持组明显延长[最大P波间期:(138±16)mm比(126±14)mm,P波离散度:(58±21)mm比(49±15)mm],两组差异有统计学意义.结论 阵发性房颤射频消融术前标准体表12导联心电图(ECG)所测的最大P波间期及P波离散度可预测术后复发.  相似文献   

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