Document Detail

Computerized fetal heart rate monitoring after vibroacoustic stimulation in the anencephalic fetus.
MedLine Citation:
PMID:  20709473     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: To quantify changes in fetal heart rate (FHR) parameters after vibroacoustic stimulation (VAS) and to evaluate the usefulness of VAS testing (VAST) in anencephalic fetuses. Our findings may also help to clarify the route(s) of vibration and sound transmission during VAST.
STUDY DESIGN AND SUBJECTS: We obtained the antepartum FHR tracings of 16 anencephalic fetuses, including both the nonstress test (NST) and VAST. Using a computerized monitoring system, HYFM, we determined all FHR parameters from data collected for 10 min before and 10 min after VAS, at successive gestational stages.
RESULTS: We observed three false reactive responses at term. The false reactive rate for VAST (3/16) was higher than that for NST (1/16). No FHR parameters increased significantly after VAS except for the number of fetal movements (FM), which increased significantly in all gestational groups (25th-32nd and 33rd-40th weeks).
CONCLUSIONS: These findings call attention to an increased probability of a false reactive response in VAST analysis, when the fetus is affected by a CNS disorder. Increased numbers of FM after VAS suggest that the vibratory pathway is more likely to elicit fetal response than the auditory pathway in this setting, and that the vibratory stimulation travels by subcortical rather than by cortical pathways.
Yong-Jin Park; Seon-Hye Park; Young-Jae Kim; Jeong-Kyu Hoh; Young-Sun Park; Moon-Il Park
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-08-14
Journal Detail:
Title:  Early human development     Volume:  86     ISSN:  1872-6232     ISO Abbreviation:  Early Hum. Dev.     Publication Date:  2010 Sep 
Date Detail:
Created Date:  2010-09-09     Completed Date:  2011-01-18     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7708381     Medline TA:  Early Hum Dev     Country:  Ireland    
Other Details:
Languages:  eng     Pagination:  569-72     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 Elsevier Ireland Ltd. All rights reserved.
Department of Mechanical Engineering, College of Engineering, Yonsei University, Seoul, Republic of Korea.
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MeSH Terms
Acoustic Stimulation
Anencephaly / physiopathology*
Fetal Monitoring / methods*
Fetus / physiopathology*
Heart Rate, Fetal / physiology*
Signal Processing, Computer-Assisted*

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