title: [Narcotrend index monitoring can predict the recovery of consciousness in patients undergoing abdominal surgery].
abstract: OBJECTIVE
  To investigate the value of Narcotrend (NT) index monitoring versus standard hemodynamic parameters in predicting the recovery of consciousness in patients undergoing abdominal surgery.
  
  
  METHODS
  Forty ASA I or II patients undergoing elective abdominal surgery were randomized into two groups to receive sevoflurane-sufentanil anesthesia monitored by NT index or solely by clinical parameters. Anesthesia was induced with the inhalation of 8% sevoflurane and sufentanil target-controlled infusion at 0.2-0.5 ng/ml. The values of NT stage (NTS), NT index (NTI), and hemodynamic parameters (MAP and HR) were recorded during the period of recovery. The prediction probability (Pk) of each parameter was calculated and compared.
  
  
  RESULTS
  NTS and NTl were closely correlated to the changes of consciousness during the recovery from general anesthesia. The Pk values of NTS and NTI in predicting eye opening and orientation recovery were 0.95, 0.92, and 0.92, 0.89, respectively, obviously higher than the Pk values of MAP and HR (P<0.05).
  
  
  CONCLUSIONS
  NT monitoring can be used to effectively predict the recovery of consciousness in patients undergoing abdominal surgery and facilitates a significant reduction of the recovery time and sufentanil dosage during a sevoflurane-sufentanil anesthesia.
authors.affiliation: Department of Anesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China. sunjuju2016@yahoo.com
authors.forename: Chuan-jiang
authors.initials: CJ
authors.lastname: Sun
authors.forename: Miao-ning
authors.initials: MN
authors.lastname: Gu
authors.forename: Jian-she
authors.initials: JS
authors.lastname: Xu
mesh_terms: D000005:Abdomen / Q000601:surgery*; D000293:Adolescent; D000328:Adult; D000368:Aged; D000762:Anesthesia Recovery Period; D000768:Anesthesia, General; D018685:Anesthetics, Inhalation / Q000008:administration & dosage; D018686:Anesthetics, Intravenous; D004569:Electroencephalography / Q000379:methods; D005260:Female; D006439:Hemodynamics; D006801:Humans; D008297:Male; D008738:Methyl Ethers / Q000008:administration & dosage; D008875:Middle Aged; D016343:Monitoring, Intraoperative / Q000379:methods*; D000077149:Sevoflurane; D017409:Sufentanil / Q000008:administration & dosage; D014474:Unconsciousness / Q000139:chemically induced; D055815:Young Adult
chemical_list: D018685:Anesthetics, Inhalation; D018686:Anesthetics, Intravenous; D008738:Methyl Ethers; D000077149:Sevoflurane; D017409:Sufentanil