Document Detail

Fetal heart rate variability due to vibroacoustic stimulation: linear and nonlinear contribution.
MedLine Citation:
PMID:  15026836     Owner:  NLM     Status:  MEDLINE    
OBJECTIVES: This work aims at characterizing the variation of fetal heart rate (FHR) provoked by vibroacoustic stimulation (VAS). The FHR signal is analyzed by means of a multiparametric approach consisting of linear and nonlinear indices. METHODS: The FHR signals of 13 fetuses were collected through a US standard CTG monitor (HP1351A) and were sampled at a frequency of 2 Hz. The VAS was provided after a period of quiet of 10 minutes. The analysis was performed on the quiet period and on two successive time windows of 10 minutes each, after the stimulation. FHR classical parameters (delta, short term variability, long term irregularity, accelerations and decelerations) as well as power spectral density (PSD) and approximate entropy (ApEn) were computed for each period. RESULTS: Results confirm that there is a significant change in fetal conditions after the stimulus is applied. This change can be clearly observed either in time domain parameters and in the regularity index (ApEn). Individual data are all consistent with an increase of variability and a decrease of regularity after VAS. CONCLUSIONS: The obtained results give further strength to the hypothesis that vibratory stimuli tests represent a reliable method for monitoring the neural development of the fetus during pregnancy.
G Magenes; M G Signorini; D Arduini; S Cerutti
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Methods of information in medicine     Volume:  43     ISSN:  0026-1270     ISO Abbreviation:  Methods Inf Med     Publication Date:  2004  
Date Detail:
Created Date:  2004-03-17     Completed Date:  2004-05-19     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0210453     Medline TA:  Methods Inf Med     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  47-51     Citation Subset:  IM    
Dipartimento di Informatica e Sistemistica, Via Ferrata 1, 27100 Pavia, Italy.
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MeSH Terms
Acoustic Stimulation* / adverse effects
Autonomic Nervous System / physiology
Central Nervous System / physiology
Computer Simulation
Heart Rate, Fetal / physiology*
Models, Statistical
Nonlinear Dynamics
Signal Processing, Computer-Assisted
Vibration* / adverse effects

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