Spectral analysis of the ventricular repolarisation duration in 24-hour Holter monitoring: technical requirements and early results

Author

Speranza, Giorgio ; Nollo, Giandomenico ; Ravelli, Flavia

Author_Institution

Biofisica Med., Istituto per la Ricerca Sci. e Tecnologica, Trento, Italy

fYear

1993

fDate

5-8 Sep 1993

Firstpage

459

Lastpage

462

Abstract

The study examines the feasibility of measuring RT intervals in Holter ECG recordings in order to apply spectral analysis. To obtain a resolution of 1 msec in the RT measurements an oversampling procedure was first introduced and the precision of two algorithms for the detection of the maximum and the end of the T-wave were compared as a function of noise. Following this, spectral analysis was applied on RR and RT series measured on five 24-hour Holter ECG tapes. Both RR and RT spectra were characterised by two main bands at low (LF~0.1 Hz) and high (HF~0.25 Hz) frequency. Throughout the 24 hour period RT and RR spectra showed synchronous changing in power spectral distribution but with a different balance between LF and HF bands

Keywords

electrocardiography; medical signal processing; spectral analysis; 24-hour Holter monitoring; Holter ECG recordings; RT interval measurement; T-wave; oversampling procedure; power spectral distribution; spectral analysis; synchronous changing; technical requirements; ventricular repolarisation duration; Autonomic nervous system; Electrocardiography; Finite impulse response filter; Frequency; Hafnium; Heart rate interval; Instruments; Monitoring; Noise measurement; Spectral analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Computers in Cardiology 1993, Proceedings.

Conference_Location

London

Print_ISBN

0-8186-5470-8

Type

conf

DOI

10.1109/CIC.1993.378404

Filename

378404