scholarly journals Ablation of a focal left atrial tachycardia via a retrograde approach using remote magnetic navigation

EP Europace ◽  
2008 ◽  
Vol 10 (6) ◽  
pp. 687-689 ◽  
Author(s):  
A. S. Thornton ◽  
M. Rivero-Ayerza ◽  
L. J. Jordaens
Keyword(s):  
Left Atrial ◽  
Atrial Tachycardia ◽  
Magnetic Navigation ◽  
Retrograde Approach ◽  
Remote Magnetic Navigation

scholarly journals Successful ablation of focal left atrial tachycardia using Stereotaxis NiobeTM remote magnetic navigation system

EP Europace ◽  
2008 ◽  
Vol 10 (3) ◽  
pp. 280-283 ◽  
Author(s):  
R. Mehta ◽  
D. T. Hart ◽  
B. S. Nagra ◽  
Z. Liu ◽  
B. K. Kantharia
Keyword(s):  
Navigation System ◽  
Left Atrial ◽  
Atrial Tachycardia ◽  
Magnetic Navigation ◽  
Remote Magnetic Navigation ◽  
Successful Ablation

scholarly journals The Impact of Left Atrial Size in Catheter Ablation of Atrial Fibrillation Using Remote Magnetic Navigation

2018 ◽  
Vol 2018 ◽  
pp. 1-8
Author(s):  
Xiao-yu Liu ◽  
Hai-feng Shi ◽  
Jie Zheng ◽  
Ku-lin Li ◽  
Xiao-xi Zhao ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Catheter Ablation ◽  
Left Atrial ◽  
Magnetic Navigation ◽  
Remote Magnetic Navigation ◽  
X Ray ◽  
Group A ◽  
Group B ◽  
The Impact

Objective. The objective of this study was to investigate the impact of left atrial (LA) size for the ablation of atrial fibrillation (AF) using remote magnetic navigation (RMN). Methods. A total of 165 patients with AF who underwent catheter ablation using RMN were included. The patients were divided into two groups based on LA diameter. Eighty-three patients had small LA (diameter <40 mm; Group A), and 82 patients had a large LA (diameter ≥40 mm; Group B). Results. During mapping and ablation, X-ray time (37.0 (99.0) s vs. 12 (30.1) s, P<0.001) and X-ray dose (1.4 (2.7) gy·cm2 vs. 0.7 (2.1) gy·cm2, P=0.013) were significantly higher in Group A. No serious complications occurred in any of the patients. There was no statistical difference in the rate of first anatomical attempt of pulmonary vein isolation between the two groups (71.1% vs. 57.3%, P=0.065). However, compared with Group B, the rate of sinus rhythm was higher (77.1% vs. 58.5%, P<0.001) during the follow-up period. More patients in Group A required a sheath adjustment (47/83 vs. 21/82, P<0.001), presumably due to less magnets positioned outside of the sheath. In vitro experiments with the RMN catheter demonstrated that only one magnet exposed created the sheath affects which influenced the flexibility of the catheter. Conclusions. AF ablation using RMN is safe and effective in both small and large LA patients. Patients with small LA may pose a greater difficulty when using RMN which may be attributed to the fewer magnets beyond the sheath. As a result, the exposure of radiation was increased. This study found that having at least two magnets of the catheter positioned outside of the sheath can ensure an appropriate flexibility of the catheter.

The magnetic navigation system allows avoidance of puncturing a baffle during ablation of a postincisional macroreentrant tachycardia

2009 ◽  
Vol 19 (2) ◽  
pp. 216-219 ◽  
Author(s):  
Bruno Schwagten ◽  
Judith Cuypers ◽  
Tamas Szili-Torok
Keyword(s):  
Left Atrium ◽  
Female Patient ◽  
Navigation System ◽  
Atrial Tachycardia ◽  
Tricuspid Atresia ◽  
Magnetic Navigation ◽  
Retrograde Approach

AbstractAn 18-year-old female patient with tricuspid atresia, discordant ventriculo-arterial connections, a total cavo-pulmonary connection, and a Damus-Kaye-Stansel suffered with atrial tachycardia. Use of a magnetically navigated catheter made it possible to create an electro-anatomical map of both atriums using a retrograde approach. It then proved possible to ablate successfully the tachycardia in the left atrium thanks to the unique capabilities of the magnetic navigation system.

The efficacy of class III D,L sotalol in treatment of left atrial tachycardia after pulmonary vein isolation

2009 ◽  
Vol 150 (36) ◽  
pp. 1694-1700 ◽  
Author(s):  
Attila Mihálcz ◽  
Csaba Földesi ◽  
Attila Kardos ◽  
Károly Ladunga ◽  
Tamás Szili-Török
Keyword(s):  
Pulmonary Vein ◽  
Pulmonary Vein Isolation ◽  
Left Atrial ◽  
Atrial Tachycardia ◽  
Class Iii

Pitvarfibrilláció miatt végzett pulmonalis vena izolációját követően a betegek egy részénél iatrogén bal pitvari tachycardia jelentkezik. Cél: A sotalolterápia hatásosságának összehasonlítása az 1C tip. propafenonnal szemben, a postablatiós arrhythmiák kezelésében. Módszer és eredmények: A vizsgálatba 75, pitvarfibrillációban szenvedő beteget (átlagéletkor 55,4 ± 7,14 év) választottunk, akiknél a pulmonalis vénák valódi elektromos izolálását végeztük. A beavatkozás során az elektromos izolációt körkörös multipoláris katéterrel ellenőriztük. Az ablatiót követően folytattuk az antiarrhythmiás terápiát még minimum 6 hétig, de célunk annak leépítése volt. Az utánkövetést 1, majd 3 havonta tervezett, ambuláns vizsgálatok alapján végeztük. A 12. hónap végén 67 betegnél tudtuk a protokoll szerint gyűjtött adatokat elemezni. 21 betegnél jelentkezett 3 hónapot követően tartósan bal pitvari tachycardia (31,3%). 11 beteg propafenon-, 4 beteg amiodaron- és 6 beteg sotalolterápiában részesült. Az első két csoportnál sotalolterápiára váltottunk, míg az utolsó csoportnál propafenonterápiát kezdtünk. A 12. hónap végére a sotalol hatásossága 80%, a propafenon hatásossága 20% volt. Következtetések: Adataink alapján PV-izolációt követően a sotalolterápia nem hatásosabb a bal pitvari tachycardiák megelőzésében, mint a propafenon. A 3 hónapon túl fellépő postablatiós bal pitvari tachycardiák kezelésében a sotalol hatásosabb, mint az IC-csoportba tartozó propafenon.

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