KAKOGAWA Jiyun    Department   Center for Medical and Nursing Education, Center for Medical and Nursing Education    Position   Professor
Article types	Original article
Language	English
Peer review	Peer reviewed
Title	Measurement of placental oxygenation by transabdominal near-infrared spectroscopy.
Journal	Formal name：American journal of perinatology Abbreviation：Am J Perinatol ISSN code：07351631/07351631
Domestic / Foregin	Foregin
Volume, Issue, Page	24(3),pp.161-6
Author and coauthor	Kawamura Takakazu, Kakogawa Jun, Takeuchi Yasutaka, Takani Satoko, Kimura Satoshi, Nishiguchi Tomizou, Sugimura Motoi, Sumimoto Kazuhiro, Kanayama Naohiro
Authorship	2nd author
Publication date	2007/03
Summary	The uteroplacental circulation in the placenta can have a major impact on the fetus. Near infrared spectroscopy (NIRS) is the noninvasive method of measuring changes in blood volumes and oxygen concentrations in living tissue. The purpose of this study is to monitor changes in placental tissue oxygen index (TOI) levels, in patients with intrauterine fetal growth restriction during pregnancy, using NIRS. We measured placental TOI values of 15 normal pregnant woman and 15 patients with intrauterine growth restriction admitted to our hospital. The placenta was assessed by ultrasound examination and NIRS was performed on all patients. The TOI values of the IUGR group when hospitalized was 78.6 +/- 1.6 (SD). This value was significantly higher than that of the controls (78.6 +/- 1.6 [SD] versus 70.2 +/- 0.4 [SD]). And the TOI values of the IUGR group, when measured before delivery, were 77.8 +/- 1.6 (SD). The TOI values of the IUGR group before delivery were significantly higher than those of the control group (77.8 +/- 1.6 [SD] versus 70.3 +/- 0.4 [SD]). We propose that NIRS is a candidate, noninvasive method for assessing placental oxygen dynamics on a real-time basis. In the near future it may contribute to perinatal medical practice.
DOI	10.1055/s-2006-958155
PMID	17304421