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Characteristic tachycardia morphologies may provide clinical markers for this underlying mechanism. 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. Methods and results: The study population comprised 114 patients with perimitral flutter who underwent de novo ablation of an MIL. The initial 57 patients (group A) underwent catheter ablation using a novel superolateral MIL design, connecting the left-sided pulmonary veins with the mitral annulus 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.

Mitral isthmus ablation

Subsequently, linear ablation of a left atrial roof and the mitral isthmus (MI) was performed. The MI ablation was applied from the 4 o’clock direction of the mitral annulus (MA) to the left-side Anousheh, R, et al. Effect of mitral isthmus block on development of atrial tachycardia following ablation for atrial fibrillation. PACE , Vol. 33, April 2010, pp.

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However, the effect MIL on mitral valve (MV) function is not known. We aimed to characterize the effect of MIL ablation on MV function. 2011-02-01 · Linear ablation created over the left atrial (LA) roof and the left lateral mitral valve isthmus (LLMI) has been shown to be effective in eliminating the tachycardia when complete bidirectional conduction block was achieved.9, 10, 11 However, achieving complete bidirectional conduction block of LLMI is difficult in a significant number of patients, 12 possibly because of the wide range of Background and objective: Anterior mitral lines (AML) have been suggested as an alternative to mitral isthmus ablation for perimitral flutter (PMF) treatment. The aim of this study was to test the efficacy of AML (i.e.: the modified anterior line (MAL, figure, panel A), the anteroseptal line (ASL, panel B), and lines between scar tissue and anterior mitral annulus) in that scenario.

Klinisk prövning på Atrial Fibrillation: PVI, LA linear ablation

Objective: We A patient with symptomatic typical atrial flutter (AFL) underwent right atrial isthmus ablation with an 8-mm catheter. Eight months later, his typical AFL recurred. The acute endpoint for AF ablation procedure is electrical isolation of the an ablation line will be placed in the mitral isthmus to prevent postablation LA flutter. Although no ablation system is yet approved in patients with persistent AF, strategies include linear lesions (left atrial roof; mitral isthmus line), ablation of av M Scheinman · 2016 · Citerat av 2 — This technique is still the preferred method for ablative cure of AVNRT.

In the first 7 patients, initial ablation performed in the right ventricular outflow tract of acute sub-clinical circumflex artery 'injury' following mitral isthmus ablation.
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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: A hierarchical approach guided by electroanatomic correlation.

A: vanligt (moturs): Aorta- eller mitral-endokardit med svår akut insufficiens eller klaffobstruktion som Reumatism (särskilt i närvaro av mitral stenos ( där vägen till den patologiska impulsen inte inkluderar isthmus.
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3. Discussion Cardiac surgeons were the pioneers of curative ablation of atrial fibrillation (AF). Since the 80’s, when Cox and colleagues introduced the LA isolation pro- An anterior ablation line, connecting the right upper pulmonary vein with anterior mitral annulus, including the scar area, was acomplished in 73% (n=11).

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Subsequently, linear ablation of a left atrial roof and the mitral isthmus (MI) was performed. 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. 2012-07-01 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 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. Pathik B (1), Choudry S (1), Whang W (1), D'Avila A (1), Koruth J (1), Sofi … 1995-12-15 Objectives: This study sought to compare efficacy and safety of the septal mitral isthmus line (SMIL) with that of the lateral mitral isthmus line (LMIL) for treatment of mitral annular flutter (MAF).