Document Detail

Noninvasive monitoring of placental oxygenation by near-infrared spectroscopy.
MedLine Citation:
PMID:  20119892     Owner:  NLM     Status:  MEDLINE    
We evaluated the clinical usefulness of near-infrared spectroscopic quantitative measurement of placental oxygenation for the noninvasive estimation of uteroplacental function in pregnant women. We performed a prospective, observational clinical study. Women without complications (N = 15), women with threatened preterm delivery (TPD; N = 6), and women with intrauterine fetal growth restriction (IUGR; N = 6) were enrolled. Measurements of placental tissue oxygenation index (TOI) using the NIRO-300 (Hamamatsu Photonics, Hamamatsu City, Japan) were recorded. Mean TOI was 72.3 +/- 5.3% in women without complications, 72.9 +/- 5.6% in pregnant women with TPD, and 78.7 +/- 3.0% in pregnant women with IUGR. Mean TOI in pregnant women with IUGR was significantly higher than that of the other two groups (P < 0.05). In the IUGR group, although gestational age at measurement on admission was less than that made during hospitalization (P < 0.05), there were no differences in the TOI in relation to gestational age at measurement. Higher TOIs in pregnant women suggest decreased placental function. Monitoring the TOI by near-infrared spectroscopic quantitative measurement may have a high potential for clinical application, particularly in prenatal management.
Jun Kakogawa; Kazuhiro Sumimoto; Takakazu Kawamura; Shigeki Minoura; Naohiro Kanayama
Publication Detail:
Type:  Journal Article     Date:  2010-01-29
Journal Detail:
Title:  American journal of perinatology     Volume:  27     ISSN:  1098-8785     ISO Abbreviation:  Am J Perinatol     Publication Date:  2010 Jun 
Date Detail:
Created Date:  2010-05-25     Completed Date:  2010-09-14     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8405212     Medline TA:  Am J Perinatol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  463-8     Citation Subset:  IM    
Copyright Information:
Thieme Medical Publishers.
Department of Obstetrics and Gynecology, International Medical Center of Japan, Shinjuku, Japan.
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MeSH Terms
Oxygen / metabolism*
Placenta / metabolism*
Prospective Studies
Spectroscopy, Near-Infrared*
Reg. No./Substance:

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