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Titolo:
Pace mapping of postinfarction scar to detect ventricular tachycardia exitsites and zones of slow conduction
Autore:
van Dessel, PFHM; de Bakker, JM; van Hemel, NM; Linnenbank, AC; Jessurun, ER; Defauw, JA;
Indirizzi:
St Antonius Hosp, Dept Cardiol, NL-3430 EM Nieuwegein, Netherlands St Antonius Hosp Nieuwegein Netherlands NL-3430 EM euwegein, Netherlands St Antonius Hosp, Dept Cardiothorac Surg, NL-3430 EM Nieuwegein, Netherlands St Antonius Hosp Nieuwegein Netherlands NL-3430 EM euwegein, Netherlands Univ Amsterdam, Expt & Mol Cardiol Grp, Cardiovasc Res Inst, Amsterdam, Netherlands Univ Amsterdam Amsterdam Netherlands c Res Inst, Amsterdam, Netherlands Interuniv Cardiol Inst Netherlands, Utrecht, Netherlands Interuniv CardiolInst Netherlands Utrecht Netherlands cht, Netherlands Univ Amsterdam, Dept Med Phys, Amsterdam, Netherlands Univ Amsterdam Amsterdam Netherlands t Med Phys, Amsterdam, Netherlands
Titolo Testata:
JOURNAL OF CARDIOVASCULAR ELECTROPHYSIOLOGY
fascicolo: 6, volume: 12, anno: 2001,
pagine: 662 - 670
SICI:
1045-3873(200106)12:6<662:PMOPST>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
MYOCARDIAL-INFARCTION; RADIOFREQUENCY ABLATION; HEART; REENTRY; ELECTROGRAMS; MECHANISMS; DISEASE; SYSTEM; ORIGIN;
Keywords:
ventricular tachycardia; myocardial infarction; mapping; sinus rhythm;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
21
Recensione:
Indirizzi per estratti:
Indirizzo: van Dessel, PFHM St Antonius Hosp, Dept Cardiol, POB 2500, NL-3430 EM Nieuwegein, Netherlands St Antonius Hosp POB 2500 Nieuwegein Netherlands NL-3430 EM
Citazione:
P.F.H.M. van Dessel et al., "Pace mapping of postinfarction scar to detect ventricular tachycardia exitsites and zones of slow conduction", J CARD ELEC, 12(6), 2001, pp. 662-670

Abstract

Introduction: The exit site and central common pathway of slow conduction are preferred sites to guide radiofrequency ablation of postinfarction ventricular tachycardia (VT), Both require inducibility of VT. In addition, their low amplitude hampers direct recording of potentials generated by activation in pathways of slow conduction. We hypothesized that pace mapping during sinus rhythm would help to detect the VT exit site and potentials generated by activation in pathways of slow activation. Methods and Results: In 13 patients suffering from VT late after anterior (n = 10) or inferior (n = 3) myocardial infarction, stimulation was performed in scarred endocardium at 23.5 (range 13 to 36) sites per patient duringarrhythmia surgery. Multielectrode recordings (64 sites) during stimulation at a fixed cycle length of 500 msec were obtained. Endocardial breakthrough sites distant (>2 cm) from the pacing site were found at 4.3 (range 3 to19) pacing sites per patient. Low-amplitude discrete potentials (LADPs) could be detected between the pacing site and the breakthrough site in 2.3 (range 0 to 13) of 4.3 stimulation sequences, In these patients, 19 VTs were induced and the exit site determined. In 6 patients, the distant pacing breakthrough site was identical to the VT exit site; in 7 patients, no similarexit sites were found. LADPs during VT were found at a median 2.0 (range 0to 14) sites per patient. Conclusion: Pace mapping of the postinfarction endocardial scar during sinus rhythm revealed 50% of the endocardial exit sites of VT and the same number of LADPs observed during VT.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 10/07/20 alle ore 11:47:16