title: Cerebral oxygenation measured by near-infrared spectroscopy and jugular vein oxygen saturation during robotic-assisted laparoscopic radical prostatectomy under total intravenous anaesthesia.
abstract: BACKGROUND
  The effects of total intravenous anaesthesia (TIVA) on cerebral oxygenation in patients undergoing robot-assisted laparoscopic radical prostatectomy (RALP) have not been investigated. We examined the changes in jugular venous oxygen saturation (SjvO2) and regional cerebral tissue oxygen saturation (rSO2) during RALP under TIVA. Whether rSO2could reflect SjvO2was also examined.
  
  
  METHODS
  Forty patients (ASA 1-2) undergoing RALP were enrolled. Measurements were obtained at eight time points during the operation.
  
  
  RESULTS
  SjvO2did not decrease at any measurement point, whereas rSO2fell significantly 120 min after pneumoperitoneum in a steep Trendelenburg position (p <0.01). There was a weak correlation between SjvO2and rSO2(Pearson correlation coefficient =0.34; p <0.01). Bland-Altman analysis showed a wide interval for the limit of agreement (47%) between the two measurements.
  
  
  CONCLUSIONS
  These findings suggested that TIVA could be safely used for RALP. It was also demonstrated that rSO2did not accurately reflect SjvO2during RALP. Copyright © 2014 John Wiley & Sons, Ltd.
authors.affiliation: Department of Anaesthesiology, School of Medicine, Iwate Medical University, Morioka, Japan.
authors.forename: Motoi
authors.initials: M
authors.lastname: Kumagai
authors.affiliation: Department of Anaesthesiology, School of Medicine, Iwate Medical University, Morioka, Japan.
authors.forename: Shohei
authors.initials: S
authors.lastname: Ogawa
authors.affiliation: Department of Anaesthesiology, School of Medicine, Iwate Medical University, Morioka, Japan.
authors.forename: Aya
authors.initials: A
authors.lastname: Doe
authors.affiliation: Department of Anaesthesiology, School of Medicine, Iwate Medical University, Morioka, Japan.
authors.forename: Kenji
authors.initials: K
authors.lastname: Suzuki
keywords: Trendelenburg position; jugular venous oxygen saturation (SjvO2); pneumoperitoneum; regional cerebral tissue oxygen saturation (rSO2)