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Titolo:
BEAT-TO-BEAT MEASUREMENT AND ANALYSIS OF THE R-T INTERVAL IN 24-H ECGHOLTER RECORDINGS
Autore:
SPERANZA G; NOLLO G; RAVELLI F; ANTOLINI R;
Indirizzi:
IST RIC SCI & TECNOL,MED BIOPHYS AREA I-38050 TRENT ITALY UNIV TRENT,DIPARTIMENTO FIS I-38050 TRENT ITALY
Titolo Testata:
Medical & biological engineering & computing
fascicolo: 5, volume: 31, anno: 1993,
pagine: 487 - 494
SICI:
0140-0118(1993)31:5<487:BMAAOT>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
HEART-RATE-VARIABILITY; QT INTERVAL; SPECTRAL-ANALYSIS; VENTRICULAR REPOLARIZATION; MYOCARDIAL-INFARCTION; ARTERIAL-PRESSURE; PROLONGATION; ALGORITHM; DURATION; SIGNAL;
Keywords:
AUTONOMIC NERVOUS SYSTEM; ECG HOLTER RECORDING; ECG SIGNAL PROCESSING; HEART RATE VARIABILITY; Q-T INTERVAL; SPECTRAL ANALYSIS; VENTRICULAR REPOLARIZATION DURATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
28
Recensione:
Indirizzi per estratti:
Citazione:
G. Speranza et al., "BEAT-TO-BEAT MEASUREMENT AND ANALYSIS OF THE R-T INTERVAL IN 24-H ECGHOLTER RECORDINGS", Medical & biological engineering & computing, 31(5), 1993, pp. 487-494

Abstract

This study assesses the feasibility of beat-to-beat measurement of the R-T interval in Holter ECG recordings. The low sampling rate of the Holter system was increased by a specific interpolating filter, and the precision and accuracy of two T-wave fiducial point (T-wave maximum:T(m), T-wave end: T(e)) detection algorithms were compared. The results of the validation tests show better performance of the T(m) measurement procedure in the presence of high noise levels. The overall process for the beat-to-beat R-T interval measurement was then tested on ECG Holter recordings collected during free and controlled respiration. Finally, the R-T(m) and the corresponding R-R intervals were measured on 24 h ECG recordings of healthy subjects and the spectral analysis was applied to the constructed series. Both R-R and R-T(m) spectra showtwo main frequency components (low-frequency approximately 0.1 Hz, high-frequency approximately 0.25 Hz) changing in their power ratios continuously throughout the 24 h period. The method described seems to provide a dynamic index of the sympatho-vagal balance at the ventricle that can be useful for a deeper understanding of ventricular repolarisation duration variability.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/09/20 alle ore 23:07:08