Use of a 64 channel computerized cardiac mapping system in arrhythmia surgery
Yonsei Medical Journal
;
: 378-385, 1995.
Article
Dans Anglais
| WPRIM
| ID: wpr-104976
ABSTRACT
A multipoint and computerized intraoperative mapping system has been known to be of value in improving the results of surgery for cardiac arrhythmia. It shows great potential as a new tool in the surgical intervention of the more common and lethal types of supraventricular tachyarrhythmias such as atrial flutter and atrial fibrillation. In addition, it also enhances the ability of the investigators to map and ablate the sometimes fleeting automatic atrial tachycardia. The authors developed a 64 channel computerized cardiac mapping system using a microcomputer (Macintosh IIx) and this has been used for basic research in cardiac electrophysiology as well as in arrhythmia surgery. In this system, bipolar electrograms are obtained from 64 different cardiac sites simultaneously at a sampling rate of 1 Ksample/sec and with a continuous and total data storage of up to 30 seconds. When the reference electrode is selected, delay time from the reference point is displayed on a two dimensional diagram of the heart. This system was used in one patient who underwent a surgical ablation of a ventricular tachycardia in whom we observed a ventricular activation sequence involving a variety of rhythms over several minutes. The system design permits easy expansion to a simultaneous sampling from 256 sites. This 64-channel mapping appeared to have the potential to be of great help in our understanding of cardiac arrhythmia as well as in its diagnosis and surgical treatment.
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Troubles du rythme cardiaque
/
Tachycardie par réentrée intranodale
/
Diagnostic assisté par ordinateur
/
Électrophysiologie
/
Coeur
/
Communications interauriculaires
/
Procédures de chirurgie cardiaque
Type d'étude:
Etude diagnostique
Limites du sujet:
Humains
langue:
Anglais
Texte intégral:
Yonsei Medical Journal
Année:
1995
Type:
Article
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