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Titolo:
RELATIONSHIP BETWEEN AUTONOMIC NERVOUS-SYSTEM LEST RESULTS, EJECTION FRACTION AND INDUCIBILITY OF SUSTAINED VENTRICULAR ARRHYTHMIAS BY MEANS OF ELECTROPHYSIOLOGICAL STUDIES
Autore:
FUENMAYOR AJ; ROSALES JG; FUENMAYOR AM;
Indirizzi:
APARTADO POSTAL 154 MERIDA 5101 VENEZUELA UNIV ANDES,DEPT PHYSIOL MERIDA VENEZUELA UNIV ANDES,CARDIOVASC RES CTR,ELECTROPHYSIOL & ARRHYTHMIA SECT MERIDAVENEZUELA
Titolo Testata:
Cardiology
fascicolo: 3, volume: 87, anno: 1996,
pagine: 200 - 204
SICI:
0008-6312(1996)87:3<200:RBANLR>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
HEART-RATE-VARIABILITY; ACUTE MYOCARDIAL-INFARCTION; QT INTERVAL PROLONGATION; SUDDEN-DEATH; MORTALITY; RISK;
Keywords:
AUTONOMIC NERVOUS SYSTEM; VENTRICULAR TACHYCARDIA; VENTRICULAR FIBRILLATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
14
Recensione:
Indirizzi per estratti:
Citazione:
A.J. Fuenmayor et al., "RELATIONSHIP BETWEEN AUTONOMIC NERVOUS-SYSTEM LEST RESULTS, EJECTION FRACTION AND INDUCIBILITY OF SUSTAINED VENTRICULAR ARRHYTHMIAS BY MEANS OF ELECTROPHYSIOLOGICAL STUDIES", Cardiology, 87(3), 1996, pp. 200-204

Abstract

Autonomic nervous system dysfunction and low left ventricular ejection fraction have been associated with an increased incidence of cardiacarrhythmias and sudden death. This research was conducted to determine whether Valsalva ratio (longest to shortest R-R interval during Valsalva manoeuvre), R-R variability (standard deviation of R-R intervals in a 60-second electrocardiographic recording strip), and corrected QTinterval permit the identification of those patients with an inducible sustained ventricular arrhythmia when submitted to electrophysiological studies. We also evaluated the ejection fraction as a predictive index of inducibility. We studied 42 patients (21 males), 38 +/- 19 years old, who were submitted to an electrophysiological study in order to evaluate supraventricular (control group: n = 16) or ventricular arrhythmias (n = 26). The patients studied for the evaluation of ventricular arthythmias presented structural and functional cardiac damage. Their ejection fraction (0.41 +/- 0.17) was significantly reduced (p = 0.01) when compared to that of the control group (0.61 +/- 0.08). The patients with cardiac damage had abnormal autonomic nervous system testresults. None of the measurements was significantly related to the inducibility of sustained ventricular tachyarrhythmias in the group of patients who had structural and functional involvement. The finding of abnormal cardiac autonomic nervous system indices and low ejection fraction can be related to structural heart disease, but neither the abnormal cardiac autonomic nervous system indices nor the low ejection fraction allows us to identify the patients who will develop inducible sustained ventricular tachyarrhythmias when submitted to electrophysiological study.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/11/20 alle ore 19:46:21