Semin Thromb Hemost 2005; 31(3): 297-301
DOI: 10.1055/s-2005-872435
Copyright © 2005 by Thieme Medical Publishers, Inc., 333 Seventh Avenue, New York, NY 10001, USA.

Transabdominal Measurement of Oxygenation of the Placenta by Near-Infrared Spectroscopy

Jun Kakogawa1 , 2 , Kazuhiro Sumimoto3 , Ei Ho2 , Naohiro Kanayama2
  • 1Postgraduate student, Hamamatsu University School of Medicine, Hamamatsu, Japan
  • 2Department of Obstetrics and Gynecology, Hamamatsu University School of Medicine, Hamamatsu, Japan
  • 3Kawasaki City Nursing University, Hamamatsu, Japan
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Publication History

Publication Date:
28 July 2005 (online)

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ABSTRACT

Near-infrared spectroscopy (NIRS) has been used as a noninvasive method for monitoring the real-time oxygenation status in areas such as the brain and striated muscle. Because the oxygenation status of the placenta is closely related to the fetal condition, monitoring placental oxygenation through the maternal abdomen is desirable. We performed transabdominal monitoring of oxygenation of the placenta by NIRS in 11 women. We improved the conventional probe of the NIRO 300 system (Hamamatsu Photonics KK, Hamamatsu, Japan) to obtain placental oxygenation data. With this probe, we succeeded in obtaining oxyhemoglobin and deoxyhemoglobin data through the maternal abdomen. We believe NIRS will prove to be useful for intrapartum monitoring.