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Importance of tachycardia cycle length for differentiating typical atrial flutter from scar-related in adult congenital heart disease

Authors
 JAE-SUN UHM  ;  HEE-SUN MUN  ;  BOYOUNG JOUNG  ;  MOON-HYOUNG LEE  ;  HUI-NAM PAK  ;  JONG-YOUN KIM  ;  JUNG-HOON SUNG  ;  HYE JIN HWANG  ;  JAEMIN SHIM  ;  JIN WI 
Citation
 PACE - Pacing and Clinical Electrophysiology, Vol.35(11) : 1338-1347, 2012 
Journal Title
 PACE - Pacing and Clinical Electrophysiology 
ISSN
 0147-8389 
Issue Date
2012
Abstract
BACKGROUND:  Radiofrequency catheter ablation (RFCA) for intraatrial reentrant tachycardia (IART) in congenital heart disease (CHD) remains difficult. METHODS:  Thirty-four consecutive adult patients (age, 37.6 ± 12.8 years; male, 21) with previously repaired CHD and IART underwent an electrophysiological study and RFCA. CHD included atrial septal defect (ASD, n = 14), tetralogy of Fallot (n = 11), ventricular septal defect (n = 4), pulmonary atresia (n = 2), atrioventricular septal defect (n = 1), transposition of the great arteries (n = 1), and double-outlet right ventricle (n = 1). RESULTS:  Duration of CHD repair to IART onset was 19.1 ± 8.5 years. Thirty and four patients had single- and double-loop reentrant tachycardia, respectively. Among the total of 38 IARTs, which were mapped, 22 (57.9%) and 13 (34.2%) IARTs were cavotricuspid isthmus (CTI)-dependent atrial flutter (AFL) and scar-related AFL, respectively. Typical AFL electrocardiography findings including definite sawtooth appearance in inferior leads and positive F wave in lead V1 were observed in only 12 of 21 patients (57.1%) with CTI-dependent AFL. CTI-dependent AFL had a significantly longer tachycardia cycle length (TCL) than scar-related AFL (267.6 ± 34.4 ms and 235.9 ± 37.0 ms, respectively; P = 0.031). TCL > 250 ms had 79% sensitivity as the cutoff value for differentiating CTI-dependent from scar-related AFL. The acute success rates of RFCA in CTI-dependent and scar-related AFLs were 85.7% and 90.0%, respectively. The recurrence rates in CTI-dependent and scar-related AFLs were 11.1% and 11.1%, respectively, during a follow-up of 21.2 ± 28.3 months. CONCLUSIONS:  CTI-dependent AFL was the most common IART in adult patients with repaired CHD and was easily manageable by RFCA. TCL might help to differentiate CTI-dependent AFL from other IARTs
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/91626
DOI
10.1111/j.1540-8159.2012.03494.x
Appears in Collections:
1. Journal Papers (연구논문) > 1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실)
Yonsei Authors
김종윤(Kim, Jong Youn) ; 문희선(Mun, Hee Sun) ; 박희남(Pak, Hui Nam) ; 심재민(Shim, Jae Min) ; 엄재선(Uhm, Jae Sun) ; 위진(Wi, Jin) ; 이문형(Lee, Moon Hyoung) ; 정보영(Joung, Bo Young) ; 황혜진(Hwang, Hye Jin)
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Full Text
http://onlinelibrary.wiley.com/doi/10.1111/j.1540-8159.2012.03494.x/abstract
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