Time-frequency analysis of heart rate variability in neonatal piglets exposed to hypoxia

Shiying Dong, Mostefa Mesbah, Barbara E. Lingwood, John M. O'Toole, Boualem Boashash

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Citations (Scopus)

Abstract

To determine whether the sympathetic nervous system plays any role in the inter-individual variation of cardiovascular response to hypoxia in newborns, neonatal heart rate variability (HRV) analysis was used to assess autonomic response during hypoxia in piglets. Due to the nonstationary nature of HRV signals and the inaccuracy in pre-defined neonatal HRV frequency bands using standard spectral methods, we applied time-frequency distribution analysis to assess neonatal HRV. Although sympathetic activity was initially enhanced to stimulate the cardiac compensation, it did not account for the variation of cardiovascular response since the power of low frequency component in HRV neither showed corresponding changes with the heart rate nor had any correlation with the brain injury. This may be attributed to immaturity of the neural pathway.

Original languageEnglish
Title of host publicationComputing in Cardiology 2011, CinC 2011
Pages701-704
Number of pages4
Volume38
Publication statusPublished - 2011
EventComputing in Cardiology 2011, CinC 2011 - Hangzhou, China
Duration: Sep 18 2011Sep 21 2011

Other

OtherComputing in Cardiology 2011, CinC 2011
CountryChina
CityHangzhou
Period9/18/119/21/11

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ASJC Scopus subject areas

  • Computer Science(all)
  • Cardiology and Cardiovascular Medicine

Cite this

Dong, S., Mesbah, M., Lingwood, B. E., O'Toole, J. M., & Boashash, B. (2011). Time-frequency analysis of heart rate variability in neonatal piglets exposed to hypoxia. In Computing in Cardiology 2011, CinC 2011 (Vol. 38, pp. 701-704). [6164662]