Atrial macroreentry involving the myocardium of the coronary sinus: a unique mechanism for atypical flutter.
J Cardiovasc Electrophysiol
; 9(10): 1094-9, 1998 Oct.
Article
in En
| MEDLINE
| ID: mdl-9817560
ABSTRACT
Atrial flutter involving either clockwise or counterclockwise rotation around the tricuspid annulus utilizing the subeustachian isthmus has been well described. However, macroreentrant atrial circuits in atypical atrial flutter in patients who have not undergone previous surgery or without atrial disease are not well defined. We describe a patient without structural heart disease who presented with an atrial macroreentrant rhythm. Entrainment mapping demonstrated a critical isthmus within the coronary sinus. Activation mapping demonstrated double potential throughout the length of the coronary sinus with disparate activation sequences. A circuit involving the myocardium of the coronary sinus, exiting in the lateral left atrium, down the interatrial septum, and reentering into the coronary sinus was identified. Successful ablation of the rhythm was accomplished by a circumferential radiofrequency application within the coronary sinus.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Atrial Flutter
/
Tachycardia, Atrioventricular Nodal Reentry
/
Coronary Vessels
/
Heart Conduction System
Type of study:
Etiology_studies
/
Prognostic_studies
Limits:
Humans
/
Male
/
Middle aged
Language:
En
Journal:
J Cardiovasc Electrophysiol
Journal subject:
ANGIOLOGIA
/
CARDIOLOGIA
/
FISIOLOGIA
Year:
1998
Document type:
Article
Affiliation country:
Estados Unidos
Publication country:
EEUU
/
ESTADOS UNIDOS
/
ESTADOS UNIDOS DA AMERICA
/
EUA
/
UNITED STATES
/
UNITED STATES OF AMERICA
/
US
/
USA