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Titolo:
EVIDENCE FOR ELECTRICAL ORGANIZATION DURING VENTRICULAR-FIBRILLATION IN THE HUMAN HEART
Autore:
CLAYTON RH; MURRAY A; CAMPBELL RWF;
Indirizzi:
FREEMAN RD HOSP,DEPT REG MED PHYS NEWCASTLE TYNE NE7 7DN TYNE & WEAR ENGLAND FREEMAN RD HOSP,DEPT ACAD CARDIOL NEWCASTLE TYNE NE7 7DN TYNE & WEAR ENGLAND
Titolo Testata:
Journal of cardiovascular electrophysiology
fascicolo: 8, volume: 6, anno: 1995,
pagine: 616 - 624
SICI:
1045-3873(1995)6:8<616:EFEODV>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
EPICARDIAL ACTIVATION; MYOCARDIAL-ISCHEMIA; ARRHYTHMIAS; EXCITATION; MECHANISMS; FREQUENCY; STIMULI; DOGS;
Keywords:
VENTRICULAR FIBRILLATION; ECG ANALYSIS; CROSS-CORRELATION FUNCTION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
27
Recensione:
Indirizzi per estratti:
Citazione:
R.H. Clayton et al., "EVIDENCE FOR ELECTRICAL ORGANIZATION DURING VENTRICULAR-FIBRILLATION IN THE HUMAN HEART", Journal of cardiovascular electrophysiology, 6(8), 1995, pp. 616-624

Abstract

Introduction: Ventricular fibrillation is a most dangerous cardiac arrhythmia that has received considerable attention, yet its pattern of electrical activation remains controversial. The aim of this study wasto investigate the degree of organization during the clinical arrhythmia and to examine the phase relationship between deflections in independent ECG leads. Methods and Results: Ten recordings of ventricular fibrillation were examined, Each had been provoked during routine electrophysiological study. The mean duration of ventricular fibrillation was 21 seconds (range 11 to 34), Independent and approximately orthogonal ECG leads I, a VF, and V-2 were recorded to computer at a sampling rate of 250 Hz. The phase relationship of each ECG lead pair was measured from the lag of peaks in their cross-correlation function (CCF), In 61% of the 1-second ECG epochs analyzed, CCF peak lag changed by < 20 msec compared to the previous epoch, Thus, the overall phase relationship was stable most of the time, Changes in CCF peak lag tended to be either gradual or to punctuate periods of stability. Conclusions: This study provides evidence of organized myocardial activation during human ventricular fibrillation.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/07/20 alle ore 22:56:27