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المؤلفDong S.
المؤلفMesbah M.
المؤلفLingwood B.E.
المؤلفO'Toole J.M.
المؤلفBoashash B.
تاريخ الإتاحة2022-05-31T19:01:40Z
تاريخ النشر2011
اسم المنشورComputing in Cardiology
المصدرScopus
معرّف المصادر الموحدhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84859939363&partnerID=40&md5=24a895525f2b837fa17db33ee3c651eb
معرّف المصادر الموحدhttp://hdl.handle.net/10576/31940
الملخصTo 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.
اللغةen
الموضوعBrain injury
Heart rate variability
Heart rates
Low-frequency components
Neural pathway
Nonstationary
Spectral methods
Sympathetic activities
Sympathetic nervous systems
Time frequency analysis
Time-frequency distributions
Cardiology
Frequency bands
Heart
Pediatrics
العنوانTime-frequency analysis of heart rate variability in neonatal piglets exposed to hypoxia
النوعConference Paper
الصفحات701-704
رقم المجلد38
dc.accessType Abstract Only


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