Characterization of reentrant circuit in macroreentrant right atrial tachycardia after surgical repair of congenital heart disease : Isolated channels between scars allow focal ablation

The purpose of this study was to characterize the circuit of macroreentrant right atrial tachycardia (MacroAT) in patients after surgical repair of congenital heart disease (SR-CHD). Sixteen patients with atrial tachycardia (AT) after SR-CHD were studied (atrial septal defect in 6, tetralogy of Fall...

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Bibliographic Details
Published in:Circulation (New York, N.Y.) N.Y.), 2001-02, Vol.103 (5), p.699-709
Main Authors: NAKAGAWA, Hiroshi, SHAH, Nayyar, OTOMO, Kenichiro, ZULU WANG, LAZZARA, Ralph, JACKMAN, Warren M, MATSUDAIRA, Kagari, OVERHOLT, Edward, CHANDRASEKARAN, Krishnaswamy, BECKMAN, Karen J, SPECTOR, Peter, CALAME, James D, RAO, Arun, HASDEMIR, Can
Format: Article
Language:English
Subjects:
Adult
Atrial Flutter
Atrial Function, Right
Biological and medical sciences
Cardiology. Vascular system
Catheter Ablation
Congenital heart diseases. Malformations of the aorta, pulmonary vessels and vena cava
Electrophysiology
Female
Follow-Up Studies
Fontan Procedure
Heart
Heart Septal Defects, Atrial - complications
Heart Septal Defects, Atrial - physiopathology
Heart Septal Defects, Atrial - surgery
Humans
Male
Medical sciences
Middle Aged
Tachycardia - etiology
Tachycardia - physiopathology
Tachycardia - surgery
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Summary:The purpose of this study was to characterize the circuit of macroreentrant right atrial tachycardia (MacroAT) in patients after surgical repair of congenital heart disease (SR-CHD). Sixteen patients with atrial tachycardia (AT) after SR-CHD were studied (atrial septal defect in 6, tetralogy of Fallot in 4, and Fontan procedure in 6). Electroanatomic right atrial maps were obtained during 15 MacroATs in 13 patients, focal AT in 1 patient, and atrial pacing in 2 patients without stable AT. A large area of low bipolar voltage (
ISSN:0009-7322
1524-4539
DOI:10.1161/01.CIR.103.5.699