Background: 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.

A mitral isthmus (MI) linear lesion created in a reanimated human heart: (A) initiation of the linear lesion with support from a transseptal sheath and secondary diagnostic catheter; (B) the ablation catheter (1) is pulled along the MI with twisting of a diagnostic catheter (2) towards the fossa ovalis, and retraction of the transseptal sheath (3) from the left atrium; (C) increased deflection

Ablation distal (ABL d) is located in the CS at the thickest (8 mm) portion of the mitral isthmus. CSd 5 coronary sinus distal; CSp 5 coronary sinus proximal; LS 5 PentaRay catheter located in the left atrial appendage. Flautt et al Left Atrial ICE Guiding Mitral Isthmus Ablation 81 Background: The mitral isthmus is a critical part of perimitral reentrant tachycardia, as well as an important substrate of persistent atrial fibrillation. .

Mitral isthmus ablation

In 82% of these (n=9), conversion to sinus rhythm (SR) was obtained with the first RF ablation set; effective mitral isthmus block (MIB) was achieved in all except 1 (technical limitations). 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). 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.

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. This study included 143 consecutive patients with nonparoxysmal atrial fibrillation who underwent initial MI ablation.

This study aimed to assess the contribution of the VOM in achieving MI conduction block. 1995-12-15 · CONCLUSIONS: The mitral isthmus contains a critical region of slow conduction in some patients with ventricular tachycardia after inferior myocardial infarction, providing a vulnerable and anatomically localized target for catheter ablation. At 1 year after the last procedure, 87 patients with mitral isthmus ablation and 69 without (P=0.002) were arrhythmia free without antiarrhythmic drugs, mitral isthmus ablation being the only 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 within the CS (7.0% versus 71.9%; P<0.001), and (3) an associated higher risk of pericardial tamponade (5.2% versus 0%; P=0.24). INTRODUCTION: The ligament of Marshall may hinder the creation of mitral isthmus (MI) block or pulmonary vein (PV) isolation (PVI) in radiofrequency (RF) catheter ablation of atrial fibrillation (AF).

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 (MI) linear ablation, between the left pulmonary vein (PV) and the mitral annulus (MA), plays an important role in the treatment of atrial fibrillation (AF). 1, 2 It is widely accepted that the endpoint for MI ablation should be bidirectional conduction block across the ablation line. Daisuke Sato, Hiroki Mani, Yu Makihara, Hiroki Kitajima, Yuji Nishikawa, Seno Keitaro, Yeong-Hwa Chun, Electrogram characteristics of the coronary sinus in cases requiring epicardial ablation within the coronary sinus for creating a conduction block at the left lateral mitral isthmus, Journal of Interventional Cardiac Electrophysiology, 10.1007/s10840-018-0403-6, 53, 1, (53-61), (2018).

Roof-dependent ATs are the second most common LA macroreentrant AT after AF ablation.
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In 82% of these (n=9), conversion to sinus rhythm (SR) was obtained with the first RF ablation set; effective mitral isthmus block (MIB) was achieved in all except 1 (technical limitations).

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.
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ERAF efter PVI + RL + MIL-ablation var signifikant relaterad till 3 månaders PVI kombinerad med taklinjen [RL] och mitral isthmuslinjen [MIL]) vid den 3

32.5 ± 6.9 cm2, P = 0.005; electroanatomic volume: 124 ± 32 vs. 165 ± 23 mL, P = 0.02). Radiofrequency Catheter Ablation Targeting the Vein of Marshall in Difficult Mitral Isthmus Ablation or Pulmonary Vein Isolation. Lee JH(1), Nam GB(1), Kim M(1), Hwang YM(1), Hwang J(1), Kim J(1), Choi KJ(1), Kim YH(1).

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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

Mitral isthmus ablation is often used as an adjunctive treatment strategy to pulmonary vein isolation in patients with non-paroxysmal atrial fibrillation (AF). 1–5 It is widely recognized that achieving mitral isthmus block is challenging, often requiring extensive ablation with irrigation catheters, the use of high ablation power, and epicardial ablation from within the coronary sinus (CS

,abjuring,ablate,ablated,ablates,ablating,ablation,ablations,ablative,ablatives ,isthmic,isthmoid,isthmus,isthmuses,istle,istles,it,italic,italicization,italicizations ,mitosis,mitotic,mitral,mitre,mitred,mitres,mitring,mitsvah,mitsvahs,mitsvoth,mitt 64 Ablation av förmaksfladder. Skapande av blockerande linje över isthmus mellan trikuspidalklaffen och V Cava inferior Lyckandefrekvens ca 90-95% Tekniskt 401-671-7676. Isthmus Gswcla. 401-671-8716 Ablation Quantumdns · 401-671-2993. Dezi Bellis Mitral Ilovekeywest unthinkably.

32.5 ± 6.9 cm2, P = 0.005; electroanatomic volume: 124 ± 32 vs. 165 ± 23 mL, P = 0.02). Mitral isthmus (MI) ablation was limited due to technical challenges in the index ablation for long‐standing persistent atrial fibrillation (LPeAF). The role of adjunctive MI ablation was controversial. Hypothesis. MI block could be achieved in most patients undergoing repeat LPeAF ablation and was associated with favorable clinical outcomes An anterior ablation line, connecting the right upper pulmonary vein with anterior mitral annulus, including the scar area, was acomplished in 73% (n=11).