Document Detail

Clinical application of pulse transit time and correlation with intrapartum fetal heart rate monitoring: a preliminary study of 18 full-term infants.
MedLine Citation:
PMID:  18579846     Owner:  NLM     Status:  MEDLINE    
The authors show that pulse transit time and blood pressure are reciprocal in fetal goat models. They applied this technique in clinical settings to correlate changes in pulse transit time with fetal heart rate monitoring patterns and acid-base status. In 18 uncomplicated pregnancies, pulse transit time was obtained from electrocardiograms to pulse oximeter waveform and averaged during each baseline period, defined by the interpretation of fetal heart rate monitoring. According to a > 10% change from the control value, chronological changes were categorized into shortened, unchanged, and prolonged. Pulse transit time was available in 82% +/- 11% of the recordings. In 15 fetuses, 2 (13%) showed prolonged, 7 (47%) showed shortened, and 6 (40%) showed unchanged conditions. Comparisons of the shortened and unchanged categories revealed that severe variable deceleration was significantly increased, and half or more fetuses showed hypoxemia in the shortened category. Shortening of pulse transit time, theoretically indicating a hypertensive condition, was more frequently associated with severe variable decelerations, suggesting that the pulse transit time may supplement the interpretation of fetal heart rate monitoring.
Yasuyuki Kawagoe; Hiroshi Sameshima; Tsuyomu Ikenoue
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Reproductive sciences (Thousand Oaks, Calif.)     Volume:  15     ISSN:  1933-7205     ISO Abbreviation:  Reprod Sci     Publication Date:  2008 Jul 
Date Detail:
Created Date:  2008-06-26     Completed Date:  2008-08-26     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101291249     Medline TA:  Reprod Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  567-71     Citation Subset:  IM    
Department of Obstetrics and Gynecology and Perinatal Center, Faculty of Medicine, University of Miyazaki, Japan.
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MeSH Terms
Blood Gas Analysis
Fetal Monitoring / methods*
Heart Rate, Fetal / physiology*
Infant, Newborn
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