Macroreentrant Atrial Tachycardia in Patients without Previous Atrial Surgery or Catheter Ablation: Clinical and Electrophysiological Characteristics of Scar-Related Left Atrial Anterior Wall Reentry

2012 ◽  
Vol 24 (4) ◽  
pp. 404-412 ◽  
Author(s):  
SEIJI FUKAMIZU ◽  
HARUMIZU SAKURADA ◽  
TAKEKUNI HAYASHI ◽  
RINTARO HOJO ◽  
KOTA KOMIYAMA ◽  
...  
Keyword(s):  
Catheter Ablation ◽  
Left Atrial ◽  
Atrial Tachycardia ◽  
Anterior Wall

scholarly journals Successful Catheter Ablation of Focal Left Atrial Tachycardia Originating From the Mitral Annulus Aorta Junction

2006 ◽  
Vol 47 (3) ◽  
pp. 461-468 ◽  
Author(s):  
Kiyoshi Otomo ◽  
Koji Azegami ◽  
Takeshi Sasaki ◽  
Mihoko Kawabata ◽  
Kenzo Hirao ◽  
...  
Keyword(s):  
Catheter Ablation ◽  
Left Atrial ◽  
Atrial Tachycardia ◽  
Mitral Annulus

Radiofrequency Catheter Ablation of Atrial Tachycardia with Unusual Left Atrial Sites of Origin: Report of Two Cases

1996 ◽  
Vol 19 (6) ◽  
pp. 988-992 ◽  
Author(s):  
CHRISTOPHER MALLAVARAPU ◽  
DAVID SCHWARTZMAN ◽  
DAVID J. CALLANS ◽  
CHARLES D. GOTTLIEB ◽  
FRANCIS E. MARCHLINSKI
Keyword(s):  
Catheter Ablation ◽  
Left Atrial ◽  
Radiofrequency Catheter Ablation ◽  
Atrial Tachycardia

scholarly journals New Discovery of Left Atrial Macroreentry Tachycardia: Originating from the Spontaneous Scarring of Left Atrial Anterior Wall

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Xuefeng Zhu ◽  
Hongxia Chu ◽  
Jianping Li ◽  
Chunxiao Wang ◽  
Wenjing Li ◽  
...  
Keyword(s):  
Pulmonary Artery ◽  
Left Atrial ◽  
Atrial Tachycardia ◽  
Low Voltage ◽  
Area Under The Curve ◽  
Anterior Wall ◽  
Female Age ◽  
Gender And Age ◽  
History Of ◽  
And Gender

Aims. This study sought to describe left atrial macroreentry tachycardia (LAMRT) originating from the spontaneous scarring of left atrial anterior wall (LAAW) and its clinical and electrophysiological characteristics, mechanisms, and the formation of substrates. Methods and Results. 9 of 123 patients (89% female, age 79.78 ± 5.59 years) had LAMRT originating from the LAAW with no cardiac surgery or prior left atrial (LA) ablation. The mean tachycardia cycle length (TCL) was 241.67 ± 38.00 milliseconds. Spontaneous scars areas and low voltage areas (LVAs) in the LAAW were found in all patients. Successful ablation of the critical isthmus caused termination of the LAMRT and was not inducible in all patients. Arrhythmogenic substrates of LAMRT were the spontaneous scars of LAAW, which matched with the aorta or/and pulmonary artery contact area. The area under the curve (AUC) of age and combination of gender and age for predicting the LAMRT originating from the LAAW were 0.918 and 0.951, respectively, with a cutoff value of ≥73.5 years of age and gender (female) predicting LAMRT with 88.9% sensitivity and 89% specificity. Conclusion. Combination of gender and age provides a simple and useful criterion to distinguish LAMRT from cavotricuspid isthmus- (CTI-) dependent atrial tachycardia in macroreentry atrial tachycardia (MRAT) in patients without a history of surgery or ablation. Aorta or/and pulmonary artery contacting LA may be related to spontaneous scars. Ablation the isthmus eliminated LAMRT in all patients.

scholarly journals Catheter Ablation of Ectopic Atrial Tachycardia Originating from the Left Atrial Appendage using CARTOMERGE® System

2008 ◽  
Vol 24 (2) ◽  
pp. 87-90
Author(s):  
Masahiko Goya ◽  
Ken-ichi Hiroshima ◽  
Hitoshi Yasumoto ◽  
Harushi Niu ◽  
Yoshimitsu Soga ◽  
...  
Keyword(s):  
Catheter Ablation ◽  
Left Atrial ◽  
Atrial Tachycardia ◽  
Left Atrial Appendage ◽  
Atrial Appendage ◽  
Ectopic Atrial Tachycardia
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