2019-07-25

Compared with conventional ablation that targets the inferolateral aspect of the mitral isthmus, the herein described novel approach demonstrated (1) a borderline significant higher success rate to achieve bidirectional mitral isthmus blockade (98.2% versus 87.7%; P=0.06), (2) a significant reduction in the need for epicardial ablation from

The MI ablation was applied from the 4 o’clock direction of the mitral annulus (MA) to the left-side pulmonary vein bottoms, and further radiofrequency applications were delivered within the coronary sinus (CS) opposite of the endocardial MI line. Abstract and Figures. Mitral isthmus ablation forms part of the electrophysiologist's armoury in the catheter ablation treatment of atrial fibrillation. It is well recognised however, that mitral 2012-07-01 · A Review of Mitral Isthmus Ablation Abstract:. Mitral isthmus ablation forms part of the electrophysiologist’s armoury in the catheter ablation treatment of Key words. Background. Based on the multiple wavelet hypothesis, the Cox-maze procedure was designed using linear lesions to Mechanism.

Mitral isthmus ablation

The objective of this review is to summarize the techniques and specific strategies that allow for increased success and durability of mitral isthmus ablation. 2019-11-01 · Rarely mitral isthmus ablation is performed empirically, most commonly during repeat AF ablation when all pulmonary veins are chronically isolated. Once OAT is induced, it is characterized by surface 12-lead electrocardiogram, as well as entrainment and activation mapping. Epicardiac conduction via the vein of Marshall (VOM) can bypass the mitral isthmus (MI) line, making MI ablation difficult. This study aimed to assess the contribution of the VOM in achieving MI conduction block. Methods.

Mitral isthmus ablation forms part of the electrophysiologist's armoury in the catheter ablation treatment of atrial fibrillation.

9 Oct 2018 Cavotricuspid-isthmus ablation line was made in patients with PV antra, we ablated the mitral isthmus, mitral annulus, roof line, septal line,

Methods. This study included 143 consecutive patients with nonparoxysmal atrial fibrillation who underwent initial MI ablation. isthmus was part of the critical zone of the reentry circuit.

isthmus was part of the critical zone of the reentry circuit. A mitral isthmus line from the left inferior PV to the mitral isthmus was performed. During ablation, the atrial flutter terminated (Figure 5), and the ablation line was completed from the left inferior PV to the mitral valve annulus. After ablation, we demon-

21 Oct 2019 Keywords: Atrial Fibrillation; Left Atrial Linear Ablation; Mitral Isthmus Ablation; Inferolateral Mitral Isthmus; Superoseptal Mitral.

BACKGROUND MAF is the most common left atrial macro-re-entrant organized atrial tachycardia (OAT) occurring after catheter ablation of atrial fibrillation. The 2 most common lesion sets for 2014-07-01 · Mitral isthmus ablation is an important component of catheter ablation for persistent atrial fibrillation and mitral isthmus dependent flutters. We describe a case where mitral isthmus ablation caused a fistula between the left circumflex artery and the left atrium and symptomatic ischaemia. The fistula was successfully closed with a covered stent.
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It is well recognised however, that mitral isthmus ablation is Background: The mitral isthmus is a critical part of perimitral reentrant tachycardia, as well as an important substrate of persistent atrial fibrillation. Deployment of an endocardial mitral isthmus line (MIL) with the end point of bidirectional block may be challenging and often requires additional epicardial ablation within the coronary sinus. Mitral isthmus ablation: A hierarchical approach guided by electroanatomic correlation.

The role of adjunctive MI ablation was controversial.
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PV electrical isolation and cavotricuspid and mitral isthmus ablation were performed. Their clinical outcome was compared with that of 100 consecutive patients undergoing ablation for the same indications, treated by PV electrical isolation and cavotricuspid ablation, without mitral isthmus ablation from April to December 2001.

Mitral isthmus thickness predicted ablation failure with a ROC area of 0.84. The best threshold to predict MI ablation failure was 8.3 mm with a sensitivity of 67% and a specificity of 97%. Left atrial size was of greater importance in failed cases (2D echo surface: 24.1 ± 2.5 vs. 32.5 ± 6.9 cm2, P = 0.005; electroanatomic volume: 124 ± 32 vs.

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After circumferential pulmonary vein isolation and roof line ablation, mitral isthmus ablation was performed during left atrial appendage pacing using an irrigated ablation catheter (endocardium: maximum power: 40/50 W, maximum temperature: 48°C; CS: maximum power: 25/30 W, maximum temperature: 48°C).

Mitral isthmus ablation forms part of the electrophysiologist’s armoury in the catheter ablation treatment of atrial fibrillation. It is well recognised however, that mitral isthmus ablation is technically challenging and incomplete ablation may be pro-arrhythmic, leading some to question its role.

WPW med preexciterat förmaksflimmer– fram till ablation. •. Symtomgivande Typiskt fladder: macro reentrant i cavo-tricuspid-isthmus. A: vanligt (moturs): Aorta- eller mitral-endokardit med svår akut insufficiens eller klaffobstruktion som

Background.

”isolerer” lungevenerne o mitral: 2.5-3.5 eller 2.0-3.0 + magnyl livslangt Kateterablation sv.t. isthmus regionen → kurativt. med en låg proteindiet i gnagare, 9 kirurgisk ablation eller ligering av M-mode ekokardiografi används för att bedöma trikuspidal (TAPSE) och mitral E. Changes in myocardial performance index and aortic isthmus and ablation. ablative. ablaut. ablaze. able.