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Title
PERCUTANEOUS MULTIELECTRODE ENDOCARDIAL MAPPING DURING VENTRICULAR-TACHYCARDIA IN THE SWINE MODEL
Author:
ELDAR M; FITZPATRICK AP; OHAD D; SMITH MF; HSU S; WHAYNE JG; VERED Z; ROTSTEIN Z; KORDIS T; SWANSON DK; CHIN M; SCHEINMAN MM; LESH MD; GREENSPON AJ;
Addresses:
CHAIM SHEBA MED CTR,NEUFELD CARDIAC RES INST IL-52621 TEL HASHOMER ISRAEL TEL AVIV UNIV,NEUFELD CARDIAC RES INST IL-69978 TEL AVIV ISRAEL UNIV CALIF SAN FRANCISCO,DEPT MED SAN FRANCISCO CA 00000 THOMAS JEFFERSON UNIV HOSP,DEPT MED PHILADELPHIA PA 19107 EP TECHNOL SUNNYVALE CA 00000
Heading Title:
Circulation
issue: 5, volume: 94, year: 1996,
pages: 1125 - 1130
SICI:
0009-7322(1996)94:5<1125:PMEMDV>2.0.ZU;2-R
Source:
ISI
Language:
ENG
Subject:
CANINE MYOCARDIAL-INFARCTION; CORONARY-ARTERY DISEASE; CATHETER ABLATION; EPICARDIAL ACTIVATION; SURGICAL-TREATMENT; RESECTION; ARRHYTHMIAS; PATTERNS; REENTRY; SYSTEM;
Keywords:
MAPPING; TACHYCARDIA; CATHETER;
Document Type:
Article
Nature:
Serial
Edition:
Science Citation Index Expanded
Science Citation Index Expanded
Citations:
27
Reviewed:
Addresses for extracts:
Citation:
M. Eldar and others, "PERCUTANEOUS MULTIELECTRODE ENDOCARDIAL MAPPING DURING VENTRICULAR-TACHYCARDIA IN THE SWINE MODEL", Circulation, 94(5), 1996, pp. 1125-1130

Abstract

Background Identification of critical areas within the ventricular tachycardia circuit is a prerequisite for catheter ablation. Currently, mapping during ventricular tachycardia, usually performed with standard catheters, is difficult and time-consuming and can be used only in patients with hemodynamically stable tachycardia. Methods and Results Atotal of 43 pigs underwent closed-chest induction of myocardial infarction. A basket-shaped catheter carrying 64 electrodes was deployed inthe left ventricle during normal sinus rhythm. Unipolar pacing at 3 mA was successful in 78% of the basket catheter electrodes, demonstrating good electrode-tissue contact. Hemodynamic and echocardiographic measurements did not reveal any significant interference with myocardialor valvular function during or after catheter deployment. One hundredeighteen episodes of monomorphic ventricular tachycardia were induced28 pigs through right ventricular stimulation, 81 of which were mapped and analyzed. Ventricular tachycardia mapping was rapid, requiring only several beats and <10 seconds to complete. Presystolic potentials,a possible target for ablation, were identified in 58% of the tachycardia episodes mapped. Pathological examination revealed only minor valvular and endocardial catheter-induced lesions immediately after mapping and none a month later. Conclusions The multielectrode catheter enables rapid and safe percutaneous endocardial mapping of ventricular tachycardia in the swine model. Exploration of the clinical potential ofthe multielectrode catheter seems warranted.

ASDD Area Sistemi Dipartimentali e Documentali, Bologna University, Review Catalogue
Document created on 15/07/19 at 19:58:56