Document Detail

Self-similarity behavior characterization of fetal heart rate signal in healthy and intrauterine growth retarded fetuses.
MedLine Citation:
PMID:  17946744     Owner:  NLM     Status:  MEDLINE    
In this paper we deal with the problem of the interpretation of the fetal heart rate (FHR) signal. From literature is known that FHR contains both linear and non linear components. Starting from this consideration we analyzed FHR as a fractal time series and we evaluated its self similarity behavior using the Hurst's coefficient (H). We first evaluated the stationarity of FHR time series and then we estimated H with Detrend fluctuation analysis (DFA) method. We calculated Hurst's coefficient for healthy fetuses and for fetuses affected by Intrauterine grow retardation (IUGR). Results provided H = 0.350 +/- 0.064 (avg +/- std) for healthy patients and H = 0.461 +/- 0.059 for IUGR. It is also shown that IUGR patients exhibit a "less non-stationary" and longer-memory behavior than normals with a reduced information content of FHR signal. We propose for this phenomenon a physiological explanation connected with the abnormal autonomic nervous system development of IUGR patients.
F Esposti; M G Signorini; M Ferrario; G Magenes
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference     Volume:  1     ISSN:  1557-170X     ISO Abbreviation:  Conf Proc IEEE Eng Med Biol Soc     Publication Date:  2006  
Date Detail:
Created Date:  2007-10-23     Completed Date:  2008-02-29     Revised Date:  2014-08-21    
Medline Journal Info:
Nlm Unique ID:  101243413     Medline TA:  Conf Proc IEEE Eng Med Biol Soc     Country:  United States    
Other Details:
Languages:  eng     Pagination:  6157-60     Citation Subset:  IM    
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MeSH Terms
Autonomic Nervous System
Diagnosis, Computer-Assisted
Fetal Diseases / diagnosis
Fetal Growth Retardation / diagnosis*
Fetal Heart
Fetal Monitoring
Fetus / pathology
Gestational Age
Heart Rate, Fetal*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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