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Titolo:
Effect of different location of atrial lead position on nearfield and farfield electrograms in dual chamber pacemaker-defibrillators
Autore:
Kantharia, BK; Wilbur, SL; Padder, FA; Pennington, JC; Samuels, FL; Movsowitz, CM; Hessen, SE; Saari, C; Kutalek, SP;
Indirizzi:
Hahnemann Univ Hosp, Div Cardiac Electrophysiol, Philadelphia, PA 19102 USA Hahnemann Univ Hosp Philadelphia PA USA 19102 Philadelphia, PA 19102 USA
Titolo Testata:
JOURNAL OF INTERVENTIONAL CARDIAC ELECTROPHYSIOLOGY
fascicolo: 1, volume: 5, anno: 2001,
pagine: 59 - 66
SICI:
1383-875X(200103)5:1<59:EODLOA>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
AMPLITUDE;
Keywords:
dual chamber pacemaker-cardioverter defibrillator; farfield ventricular electrogram; farfield R wave; nearfield atrial electrogram; ventricular fibrillation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
14
Recensione:
Indirizzi per estratti:
Indirizzo: Kantharia, BK Hahnemann Univ Hosp, Div Cardiac Electrophysiol, Mail Stop 470,Broad & Vine St, Philadelphia, PA 19102 USA Hahnemann Univ Hosp Mail Stop 470,Broad & Vine St Philadelphia PA USA 19102
Citazione:
B.K. Kantharia et al., "Effect of different location of atrial lead position on nearfield and farfield electrograms in dual chamber pacemaker-defibrillators", J INTERV C, 5(1), 2001, pp. 59-66

Abstract

The normal functioning of dual chamber pacemaker-cardioverter defibrillator (AV pacer/ICD) may be affected by oversensing of the farfield R wave (FFRW) by the atrial channel. This study aimed to investigate whether placementof the AV pacer/ICD's atrial lead at a lateral (LAT) wall location compared to a medial (MED) location i.e. the appendage of the right atrium, would reduce the amplitude of FFRWs but not the nearfield atrial electrograms (AEGMs) during sinus rhythm (SR) and ventricular fibrillation (VF). In 17 patients, real time electrograms were recorded during SR and induced VF throughthe atrial lead initially at the MED and subsequently at the LAT location. In 10 patients the electrograms in SR were also recorded on a computerizeddata acquisition and recording system at different band-pass filter settings. Although FFRWs were recorded both at MED and LAT locations, they were much smaller, 3.5 +/-4.1[emsp4 ]mm during SR and 1.7 +/-2.2 mm during VF at the LAT location. At 30-500 Hz band-pass filter, lower amplitudes of FFRWs 0.14 +/-0.09 mV were recorded at the LAT location. The V/A ratios of the amplitudes of FFRWs and AEGMs were smaller at the LAT location during SR and VF. The nearfield AEGMs were of similar amplitudes at the MED and LAT locations. These data indicate that lower amplitudes of FFRWs are recorded by placement of the atrial lead at the lateral wall of the right atrium. Oversensing of FFRWs may be prevented to improve functioning of the AV pacer-ICD.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/04/20 alle ore 21:01:20