Radiofrequency catheter ablation (RFCA) of isthmus-dependent AFL is performed with a steerable mapping/ablation catheter positioned across the CTI via a femoral vein. 3, 5 – 7, 24 – 26 Catheters with either saline-irrigated ablation electrodes (Thermocool Classic or SF, Biosense Webster, Inc, Diamond Bar, CA, or Chili, Boston Scientific, Inc., Natick, MA), or large distal ablation

Radiofrequency (RF) catheter ablation is one of the most common strategies for the current management of cavotricuspid isthmus (CTI)-dependent atrial flutter

Electromagnetic versus fluoroscopic mapping of the inferior isthmus for ablation of typical atrial flutter: A prospective randomized study. Electrograms recorded from two distal electrode pairs (E1 and E2) positioned just anterior to the ablation line were analyzed during atrial flutter and during coronary sinus pacing, before and after ablation. Complete isthmus block was verified by the presence of widely split double electrograms along the entire ablation line. Background Catheter ablation of left atrial linear lesions is an effective treatment option for perimitral flutter and is often used as a substrate modification approach for persistent atrial fibrillation.

Background: Treatment of left atrium (LA) flutter is a relevant electrophysiological challenge due to its high complexity in mapping interpretation and, often, in effective ablation. Perimitral macroreentry is a frequent mechanism and ablation strategy classically consists in an inferior mitral isthmus blockage line. Se hela listan på ahajournals.org Atrial flutter most commonly occurs in a reentrant circuit around the tricuspid valve — typical atrial flutter or type I. Ablation for this rhythm is easy since it requires only venous access to 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. This article first reviews DESIGN: 127 patients underwent elective cavotricuspid isthmus ablation with the indication of symptomatic, typical atrial flutter. The occurrence of atrial flutter, atrial fibrillation, cerebrovascular events and the need for additional ablation procedures for symptomatic atrial fibrillation was assessed during long-term follow-up. 2019-11-01 · Rarely mitral isthmus ablation is performed empirically, most commonly during repeat AF ablation when all pulmonary veins are chronically isolated.

Ablation of Isthmus-dependent Atrial Flutter; A Comparison of 10 mm Tip Standard, 6 mm Tip Irrigated Radiofrequency, and Cryotherapy Catheters Kaoru Okishige 1*, Mitsumi Yamashita , Tomofumi Nakamura1, Yasuteru Yamauchi , Kenzo Hirao2, Tetsuo Sasano2 1Heart Center, Japan Red Cross Yokohama City Bay Hospital, Yokohama, Japan

April 2005) ablation, atrial flutter, atrioventricular node, flutter isthmus, morphology. Introduction. The inferior right atrial cavo-tricuspid isthmus, a criti-. Ablation of AFL interrupts the circuit at its narrowest portion the cavotricuspid isthmus (CTI).

Atrial flutter ablation is a procedure to create scar tissue within an upper chamber of the heart in order to block the electrical signals that cause a fluttering heartbeat. Atrial flutter occurs when your heart's electrical signals tell the upper chambers of your heart (atria) to beat too quickly.

Ripple mapping is highly effective at locating the critical isthmus maintaining the tachycardia and avoiding anatomic ablation lines. This approach has a higher termination rate with less radiofrequency ablation required. Atrial flutter most commonly occurs in a reentrant circuit around the tricuspid valve — typical atrial flutter or type I. Ablation for this rhythm is easy since it requires only venous access to Generally, if cavotricuspid isthmus-dependent flutter is induced, it is ablated. If other OATs are induced, they are targeted only among patients with history of OAT. Rarely mitral isthmus ablation is performed empirically, most commonly during repeat AF ablation when all pulmonary veins are chronically isolated. Typical atrial flutter is often referred to as isthmus-dependent flutter. The rhythm is due to macroreentry, there is an excitable gap, and the rhythm can be entrained.

8 Mapping of atypical flutter occurring in the absence of prior surgery can nevertheless demonstrate regions of low-voltage amplitude and scarring critical to the arrhythmia mechanism. This can occur in the context of structural heart disease, such as heart Atrial flutter ablation may be challenging in the presence of modified/complex anatomy. It is mandatory to precisely define the critical isthmus for those procedures. In this purpose, image integration gives a roadmap before starting the procedure, and remote magnetic navigation may be helpful as well in these complex anatomies.
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Background: Treatment of left atrium (LA) flutter is a relevant electrophysiological challenge due to its high complexity in mapping interpretation and, often, in effective ablation.

typical flutter; atypical flutter; cavotricuspid isthmus; mapping; isthmus block; differential pacing; entrainment Catheter ablation of the cavo-tricuspid isthmus (CTI) is a well-established and curative first-line therapy for patients with typical atrial flutter with success rates ∼ 90%. Recurrence of CTI-dependent flutters postablation is due to Recurrence of atrial flutter (AFL) after cavotricuspid isthmus (CTI) ablation for typical AFL is uncommon, but the long term integrity of this line in patients without recurrent clinical flutter is unknown. Methods: CTI line was performed 27 Oct 2015 The aim of this study was to determine the acute and long-term outcome of radiofrequency catheter ablation (RFCA) for cavotricuspid isthmus-dependent atrial flutter (CTI-AFL) in adults with and without previous cardiac&nbs 22 Mar 2016 A patient with symptomatic typical atrial flutter (AFL) underwent right atrial isthmus ablation with an 8-mm catheter.
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2021-03-30 · The positive significance of isthmus ablation in patients with atrial flutter on quality of life has recently been described. 25 In addition, catheter ablation is curative in many patients, may obviate the need for life-long antiarrhythmic drug medication, and may be more cost effective in the long term than antiarrhythmic drug therapy.

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