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Examiner’s finger-mounted fetal tissue oximetry: a preliminary report on 30 cases

  • Toshiyuki Uchida , Naohiro Kanayama EMAIL logo , Mari Mukai , Naomi Furuta , Hiroaki Itoh , Hikaru Suzuki and Masatsugu Niwayama
Published/Copyright: March 9, 2015
Journal of Perinatal Medicine
From the journal Journal of Perinatal Medicine Volume 44 Issue 7

Abstract

Objective:

To describe preliminary experience with a finger-mounted fetal tissue oximetry probe during the 2nd stage of labor.

Materials and methods:

A total of 30 term pregnant women without pregnancy complications were recruited. We measured fetal tissue oxygen saturation (FtO2) by using a finger-mounted fetal tissue oximetry during cervical examinations in the 2nd stage of labor. The data capturing rate of FtO2 and the interclass correlation coefficient were also examined. The mean FtO2 was compared to the neonatal condition assessed by the levels of umbilical cord blood.

Results:

FtO2 was obtained in all cases, regardless of wetness, hair color, the part of the fetal head that was exposed, rotation of the fetus, color of amniotic fluid, and caput succedaneum. The mean FtO2 was 65.5%±8.58% in normal neonates [Apgar score >7 (1 min), n=25]. The mean FtO2 was significantly correlated with umbilical cord arterial pH (r=0.52, P=0.0030, n=30), but not with umbilical cord arterial partial pressure of oxygen. The interclass correlation coefficient was 0.94.

Conclusions:

Tissue oxygen saturation of the fetal head was obtained easily by the examiner’s finger-mounted fetal tissue oximetry.

Keywords: Examiner; fetal tissue oximetry; fetal tissue oxygen saturation; finger pulp; near-infrared spectroscopy; parturition
Corresponding author: Naohiro Kanayama, MD, PhD, Department of Obstetrics and Gynecology, Hamamatsu University School of Medicine, 1-20-1 Handa-yama, Hamamatsu 431-3192, Japan, Tel.: +81-453-435-2309, Fax: +81-453-435-2308, E-mail:

Acknowledgments

We would like to thank Mr. Yutaka Yokoyama and Yukio Chitose of ASTEM Co., Ltd., Kawasaki, Japan for advice in the development of the instruments. We acknowledge the financial support of the Adaptable and Seamless Technology transfer Program through target driven R&D (A-STEP) program from the Japan Science and Technology Agency (JST).

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  1. The authors stated that there are no conflicts of interest regarding the publication of this article.

Received: 2014-9-4
Accepted: 2015-2-10
Published Online: 2015-3-9
Published in Print: 2016-10-1

©2016 Walter de Gruyter GmbH, Berlin/Boston

Articles in the same Issue

  1. Frontmatter
  2. Editorials
  3. Editorial
  4. First 10 years of the International Academy of Perinatal Medicine – which lessons we have learned and what are future challenges
  5. Recommendation and Guidelines for Perinatal Practice
  6. Is intrauterine surgery justified? Report from the working group on ultrasound in obstetrics of the World Association of Perinatal Medicine (WAPM)
  7. Original articles - Obstetrics
  8. Examiner’s finger-mounted fetal tissue oximetry: a preliminary report on 30 cases
  9. Values of T/QRS ratio in pregnancies complicated by intrauterine growth restriction
  10. Cesarean delivery among women with prolonged labor induction
  11. Maternal and fetal outcomes after uterine fundal pressure in spontaneous and assisted vaginal deliveries
  12. Impact of maternal age on delivery outcomes following spontaneous labour at term
  13. Maternal characteristics of pregnancies with intrauterine fetal demise
  14. Evaluation of standardized, computerized Dawes/Redman heart-rate analysis based on different recording methods and in relation to fetal beat-to-beat heart rate variability
  15. Perinatal outcomes with isolated oligohydramnios at term pregnancy
  16. Factors associated with choice of delivery with or without epidural analgesia among laboring women: a cross-sectional survey at a tertiary care hospital of a developing country
  17. Ultrasonographic assessment of cervical length in pregnancies scheduled for a cesarean delivery: prediction of early spontaneous onset of labor
  18. Characterization of visceral and subcutaneous adipose tissue transcriptome in pregnant women with and without spontaneous labor at term: implication of alternative splicing in the metabolic adaptations of adipose tissue to parturition
  19. Classification of stillbirths is an ongoing dilemma
  20. Out-of-hospital births in the United States 2009–2014
  21. Congress Calendar
  22. Congress Calendar
https://doi.org/10.1515/jpm-2014-0297
Keywords for this article
Examiner; fetal tissue oximetry; fetal tissue oxygen saturation; finger pulp; near-infrared spectroscopy; parturition

Articles in the same Issue

  1. Frontmatter
  2. Editorials
  3. Editorial
  4. First 10 years of the International Academy of Perinatal Medicine – which lessons we have learned and what are future challenges
  5. Recommendation and Guidelines for Perinatal Practice
  6. Is intrauterine surgery justified? Report from the working group on ultrasound in obstetrics of the World Association of Perinatal Medicine (WAPM)
  7. Original articles - Obstetrics
  8. Examiner’s finger-mounted fetal tissue oximetry: a preliminary report on 30 cases
  9. Values of T/QRS ratio in pregnancies complicated by intrauterine growth restriction
  10. Cesarean delivery among women with prolonged labor induction
  11. Maternal and fetal outcomes after uterine fundal pressure in spontaneous and assisted vaginal deliveries
  12. Impact of maternal age on delivery outcomes following spontaneous labour at term
  13. Maternal characteristics of pregnancies with intrauterine fetal demise
  14. Evaluation of standardized, computerized Dawes/Redman heart-rate analysis based on different recording methods and in relation to fetal beat-to-beat heart rate variability
  15. Perinatal outcomes with isolated oligohydramnios at term pregnancy
  16. Factors associated with choice of delivery with or without epidural analgesia among laboring women: a cross-sectional survey at a tertiary care hospital of a developing country
  17. Ultrasonographic assessment of cervical length in pregnancies scheduled for a cesarean delivery: prediction of early spontaneous onset of labor
  18. Characterization of visceral and subcutaneous adipose tissue transcriptome in pregnant women with and without spontaneous labor at term: implication of alternative splicing in the metabolic adaptations of adipose tissue to parturition
  19. Classification of stillbirths is an ongoing dilemma
  20. Out-of-hospital births in the United States 2009–2014
  21. Congress Calendar
  22. Congress Calendar
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