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Titolo:
PERFORMANCE ASSESSMENT OF STANDARD ALGORITHMS FOR DYNAMIC R-T INTERVAL MEASUREMENT - COMPARISON BETWEEN R-T-APEX AND R-T-END APPROACH
Autore:
PORTA A; BASELLI G; LOMBARDI F; CERUTTI S; ANTOLINI R; DELGRECO N; RAVELLI F; NOLLO G;
Indirizzi:
ITC,CTR MAT & BIOFIS MED,VIA SOMMAR 18 I-38050 TRENT ITALY ITC,CTR MAT & BIOFIS MED I-38050 TRENT ITALY POLITECN MILAN,DIPARTIMENTO BIOINGN I-20133 MILAN ITALY UNIV BRESCIA,DIPARTIMENTO ELETTRON AUTOMAZ BRESCIA ITALY UNIV MILAN,OSPED L SACCO MILAN ITALY
Titolo Testata:
Medical & biological engineering & computing
fascicolo: 1, volume: 36, anno: 1998,
pagine: 35 - 42
SICI:
0140-0118(1998)36:1<35:PAOSAF>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
VENTRICULAR REPOLARIZATION DURATION; SPECTRAL-ANALYSIS; QT INTERVAL; HEART-RATE; HOLTER RECORDINGS; PROLONGATION; VARIABILITY; DISPERSION; DEATH;
Keywords:
Q-T INTERVAL; VENTRICULAR REPOLARIZATION DURATION; AUTOMATIC R-T MEASUREMENT; R-T VARIABILITY; TIME-AND FREQUENCY-DOMAIN ANALYSIS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
22
Recensione:
Indirizzi per estratti:
Citazione:
A. Porta et al., "PERFORMANCE ASSESSMENT OF STANDARD ALGORITHMS FOR DYNAMIC R-T INTERVAL MEASUREMENT - COMPARISON BETWEEN R-T-APEX AND R-T-END APPROACH", Medical & biological engineering & computing, 36(1), 1998, pp. 35-42

Abstract

Three automatic approaches to ventricular repolarisation duration measurement (R-T-apex, R-T-end threshold and RTend fitting methods) are compared on computer-generated and real ECG signals, in relation to their reliability in the presence of the most common electrocardiographicartefacts (i.e. additive broadband noise and additive and multiplicative periodical disturbances). Simulations permit the evaluation of theamount of RT beat-to-beat variability induced by the artefacts. The R-T-end threshold method performs better than the R-T-end fitting one, and, hence, the latter should be used with caution when R-T-end variability is addressed. Whereas the R-T-apex method is more robust with regard to broadband noise than the R-T-end threshold one, the reverse situation is observed in the presence of periodical amplitude modulations. A high level of broadband noise does not prevent the detection of the central frequency of underlying R-T periodical changes. Comparison between the power spectra of the beat-to-beat R-T variability series obtained from three orthogonal ECG leads (X,Y,Z) is used to assess the amount of real and artefactual variability in 13 normal subjects at rest. The R-T-apex series displays rhythms at high frequency (HF) with apercentage power on the Z lead (57.1+/-4.9) greater than that on the X and Y leads (41.9+/-4.6 and 46.1+/-4.9, respectively), probably because of respiratory-related artefacts affecting the Z lead more remarkably. More uniform HF power distributions over X,Y,Z leads are observedin the R-T-end threshold series (31.8 +/-3.8, 39.2+/-4.1 and 35.1+/-4.2, respectively), thus suggesting minor sensitivity of the R-T-end threshold measure to respiratory-related artefacts.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/09/20 alle ore 21:49:09