Wavelet decomposition of baroreceptor function tests in pigs

Author

Wiklund, U. ; Morrison, S. ; Akay, M.

Author_Institution

Dept. of Biomed. Eng., Univ. Hosp., Umea, Switzerland

Volume

3

fYear

1998

fDate

29 Oct-1 Nov 1998

Firstpage

1478

Abstract

In this paper the function of baroreceptive mechanisms in anesthetized pigs were assessed during pharmacological baroreceptor function tests. Using the discrete wavelet transform the respiratory related high-frequency component was decomposed from the beat-to-beat heart period and systolic arterial pressure variability signals. The pigs were mechanically ventilated at 24 breaths/minute. The results showed that in these pigs the respiratory component acted as a noise source that blurred the sigmoid-shaped relationship between blood pressure and heart period changes during the baroreceptor function tests

Keywords

cardiovascular system; discrete wavelet transforms; electrocardiography; mechanoception; medical signal processing; neurophysiology; spectral analysis; ECG signal; anesthetized pigs; baroreceptive mechanisms; baroreceptor function tests; beat-to-beat heart period; blood pressure changes; discrete wavelet transform; heart period changes; respiratory related high-frequency component; sigmoid-shaped relationship; subband decomposition; systolic arterial pressure variability signals; wavelet decomposition; Animals; Biomedical engineering; Blood pressure; Catheters; Discrete wavelet transforms; Drugs; Fluctuations; Frequency; Heart; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 1998. Proceedings of the 20th Annual International Conference of the IEEE

Conference_Location

Hong Kong

ISSN

1094-687X

Print_ISBN

0-7803-5164-9

Type

conf

DOI

10.1109/IEMBS.1998.747165

Filename

747165