title: Application of the perfusion index in obstetric bleeding.
abstract: OBJECTIVE
  We assessed the utility of the pulse oximeter perfusion index (PI) in maternal monitoring immediately after delivery.
  
  
  METHODS
  We examined 30 pregnant women without any complications using the Rad7 device at delivery. The correlations between heart rate (HR), systolic blood pressure (BP), oxygen saturation SpO2, PI, Pleth variability index (PVI), shock index and blood loss were assessed.
  
  
  RESULTS
  Blood loss at 20-min postpartum was not correlated with the difference in heart rate, systolic BP, SpO2, shock index or PVI taken immediately after delivery and at 20-min postpartum, but showed a strong negative correlation with the difference in the PI taken immediately after delivery and at 20-min postpartum (r = -0.70).
  
  
  CONCLUSIONS
  PI changes were correlated with post-delivery blood loss and can be used for maternal monitoring at delivery.
authors.affiliation: a Department of Obstetrics and Gynecology , Mie University School of Medicine , Mie , Japan .|b Department of Obstetrics and Gynecology , Kuwana City Medical Center , Kuwana , Japan , and.
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Tanaka
authors.affiliation: c Department of Obstetrics and Gynecology , Sakakibara Heart Institute , Tokyo , Japan.
authors.forename: Shinji
authors.initials: S
authors.lastname: Katsuragi
authors.affiliation: a Department of Obstetrics and Gynecology , Mie University School of Medicine , Mie , Japan .
authors.forename: Kayo
authors.initials: K
authors.lastname: Tanaka
authors.affiliation: a Department of Obstetrics and Gynecology , Mie University School of Medicine , Mie , Japan .
authors.forename: Takuya
authors.initials: T
authors.lastname: Kawamura
authors.affiliation: a Department of Obstetrics and Gynecology , Mie University School of Medicine , Mie , Japan .
authors.forename: Masafumi
authors.initials: M
authors.lastname: Nii
authors.affiliation: a Department of Obstetrics and Gynecology , Mie University School of Medicine , Mie , Japan .
authors.forename: Michiko
authors.initials: M
authors.lastname: Kubo
authors.affiliation: a Department of Obstetrics and Gynecology , Mie University School of Medicine , Mie , Japan .
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Osato
authors.affiliation: b Department of Obstetrics and Gynecology , Kuwana City Medical Center , Kuwana , Japan , and.
authors.forename: Yoshihito
authors.initials: Y
authors.lastname: Sasaki
authors.affiliation: a Department of Obstetrics and Gynecology , Mie University School of Medicine , Mie , Japan .
authors.forename: Tomoaki
authors.initials: T
authors.lastname: Ikeda
mesh_terms: D000328:Adult; D001794:Blood Pressure / Q000502:physiology*; D036861:Delivery, Obstetric; D005260:Female; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D010092:Oximetry / Q000379:methods*; D010100:Oxygen / Q000097:blood*; D011181:Postnatal Care; D006473:Postpartum Hemorrhage / Q000175:diagnosis*; D011247:Pregnancy
chemical_list: D010100:Oxygen
keywords: Blood pressure; maternal monitoring; obstetric bleeding; perfusion index; postpartum