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Titolo:
HEART-RATE-VARIABILITY DEPRESSION IN PATIENTS WITH UNSTABLE ANGINA
Autore:
HUANG J; SOPHER M; LEATHAM E; REDWOOD S; CAMM AJ; KASKI JC;
Indirizzi:
ST GEORGE HOSP,SCH MED,DEPT CARDIOL SCI LONDON SW17 0RE ENGLAND ST GEORGE HOSP,SCH MED,DEPT CARDIOL SCI LONDON SW17 0RE ENGLAND
Titolo Testata:
The American heart journal
fascicolo: 4, volume: 130, anno: 1995,
pagine: 772 - 779
SICI:
0002-8703(1995)130:4<772:HDIPWU>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
ACUTE MYOCARDIAL-INFARCTION; CARDIAC PARASYMPATHETIC ACTIVITY; FREQUENCY-DOMAIN MEASURES; POWER SPECTRAL-ANALYSIS; PERIOD VARIABILITY; PRESSURE VARIABILITIES; CARDIOVASCULAR CONTROL; MORTALITY; TIME;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
42
Recensione:
Indirizzi per estratti:
Citazione:
J. Huang et al., "HEART-RATE-VARIABILITY DEPRESSION IN PATIENTS WITH UNSTABLE ANGINA", The American heart journal, 130(4), 1995, pp. 772-779

Abstract

The degree of reduction in heart rate variability (HRV) after myocardial infarction has been shown to have prognostic significance, but HRVhas not been studied extensively in patients with unstable angina. Weassessed spectral and nonspectral measurements of HRV in 52 patients with unstable angina, 52 patients with acute myocardial infarction, and 41 normal subjects. The spectral bands of 0.04 to 0.15 Hz (low frequency), 0.15 to 0.4 (high frequency), and nonspectral parameters SDNN, SDANN, SDNN index, rMSSD, and pNN50 were calculated from continuous 24-hour ECGs. All measures of HRV were reduced in patients with acute coronary syndromes compared to normal controls (p < 0.001), and there was no significant difference in measure of HRV between unstable angina and myocardial infarction patients. In patients with unstable angina who stabilized after admission, HRV had increased by the second 24 hours of monitoring. In contrast, HRV was further depressed in patients who had episodes of chest pain or transient ST-segment depression duringthe second 24 hours. rMSSD, pNN50, and SDNN index were lower in patients with unstable angina who had transient silent ischemia compared tothose without silent ischemia. Of the patients with unstable angina, 4 died and 1 had nonfatal acute myocardial infarction within 11 months. HRV was lower in these patients than in patients without further cardiac events.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 09/08/20 alle ore 23:36:51