title: Examiner's finger-mounted fetal tissue oximetry: a preliminary report on 30 cases.
abstract: OBJECTIVE
  To describe preliminary experience with a finger-mounted fetal tissue oximetry probe during the 2nd stage of labor.
  
  
  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.
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Uchida
authors.forename: Naohiro
authors.initials: N
authors.lastname: Kanayama
authors.forename: Mari
authors.initials: M
authors.lastname: Mukai
authors.forename: Naomi
authors.initials: N
authors.lastname: Furuta
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Itoh
authors.forename: Hikaru
authors.initials: H
authors.lastname: Suzuki
authors.forename: Masatsugu
authors.initials: M
authors.lastname: Niwayama
mesh_terms: D000328:Adult; D001785:Blood Gas Monitoring, Transcutaneous / Q000295:instrumentation*; D004867:Equipment Design; D005260:Female; D005312:Fetal Blood / Q000378:metabolism; D005323:Fetal Monitoring / Q000295:instrumentation*; D005385:Fingers; D006257:Head; D006801:Humans; D007231:Infant, Newborn; D007748:Labor Stage, Second / Q000097:blood; D008297:Male; D010100:Oxygen / Q000097:blood; D011247:Pregnancy; D047929:Term Birth / Q000097:blood; D055815:Young Adult
chemical_list: D010100:Oxygen