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Titolo:
Analysis of right ventricular function in the exercising horse: use of theFourier Transform
Autore:
Weigle, GE; Langsetmo, I; Gallagher, RR; Dyer, RA; Erickson, HH; Fedde, MR;
Indirizzi:
Kansas State Univ, Dept Anat & Physiol, Manhattan, KS 66506 USA Kansas State Univ Manhattan KS USA 66506 Physiol, Manhattan, KS 66506 USA Kansas State Univ, Dept Elect & Comp Engn, Manhattan, KS 66506 USA Kansas State Univ Manhattan KS USA 66506 mp Engn, Manhattan, KS 66506 USA
Titolo Testata:
EQUINE VETERINARY JOURNAL
fascicolo: 2, volume: 32, anno: 2000,
pagine: 101 - 108
SICI:
0425-1644(200003)32:2<101:AORVFI>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
TIME CONSTANT; PRESSURE; RELAXATION; HEART; FALL;
Keywords:
horse; cardiac function; right ventricular pressure; signal separation; signal processing; right ventricular relaxation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
21
Recensione:
Indirizzi per estratti:
Indirizzo: Erickson, HH Kansas State Univ, Dept Anat & Physiol, Manhattan, KS 66506 USA Kansas State Univ Manhattan KS USA 66506 attan, KS 66506 USA
Citazione:
G.E. Weigle et al., "Analysis of right ventricular function in the exercising horse: use of theFourier Transform", EQUINE V J, 32(2), 2000, pp. 101-108

Abstract

The objective of this study was to develop and test a technique to allow dynamic cardiac function to be studied during exercise in the horse. Blood pressure waveforms in the exercising horse are difficult to interpret because of the large influence of stride and respiration. A method has been devised to study dynamic right ventricular variables during high-speed exercise in the horse. A Fast Fourier Transform was performed on the digitised pressure waveforms and the frequency components associated with stride and respiration were removed. An inverse Fourier Transform was then performed to generate a time-domain pressure signal. Several dynamic right ventricular variables were calculated using the derived signal. Various parameters associated with removing frequencies from the frequency-domain pressure signal werechanged to determine their influence on the variables. Most of the variables were not sensitive to these parameters. When compared during separate exercise bouts, some variables differed among runs, while others were not significantly different. Using the signal separation technique described here,right ventricular function of an exercising horse can be critically analysed.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/04/20 alle ore 19:40:44