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Nils Dennhardt, Dietmar Boethig, Christiane Beck, Sebastian Heiderich, Martin Boehne, Andreas Leffler, Barbara Schultz, Robert Sümpelmann
BACKGROUND: Sevoflurane induction followed by intravenous anesthesia is a widely used technique to combine the benefits of an easier and less traumatic venipuncture after sevoflurane inhalation with a recovery with less agitation, nausea, and vomiting after total intravenous anesthesia (TIVA). Combination of two different anesthetics may lead to unwanted burst suppression in the electroencephalogram (EEG) during the transition phase. OBJECTIVE: The objective of this prospective clinical observational study was to identify the optimal initial propofol bolus dose for a smooth transition from sevoflurane induction to TIVA using the EEG Narcotrend Index (NI)...
February 18, 2017: Paediatric Anaesthesia
Anthony G Messina, Michael Wang, Marshall J Ward, Chase C Wilker, Brett B Smith, Daniel P Vezina, Nathan Leon Pace
BACKGROUND: General anaesthesia is usually associated with unconsciousness. 'Awareness' is when patients have postoperative recall of events or experiences during surgery. 'Wakefulness' is when patients become conscious during surgery, but have no postoperative recollection of the period of consciousness. OBJECTIVES: To evaluate the efficacy of two types of anaesthetic interventions in reducing clinically significant awareness:- anaesthetic drug regimens; and- intraoperative anaesthetic depth monitors...
October 18, 2016: Cochrane Database of Systematic Reviews
Jian-Yan Chen, Ming Yi, Shang-Long Yao, Xue-Ping Zhang
This study aimed to establish a new propofol target-controlled infusion (TCI) model in animals so as to study the general anesthetic mechanism at multi-levels in vivo. Twenty Japanese white rabbits were enrolled and propofol (10 mg/kg) was administrated intravenously. Artery blood samples were collected at various time points after injection, and plasma concentrations of propofol were measured. Pharmacokinetic modeling was performed using WinNonlin software. Propofol TCI within the acquired parameters integrated was conducted to achieve different anesthetic depths in rabbits, monitored by narcotrend...
June 2016: Journal of Huazhong University of Science and Technology. Medical Sciences
Julia Tünsmeyer, Klaus Hopster, Sabine B Kästner
OBJECTIVE: To investigate the use of the Narcotrend electroencephalogram (EEG) monitor for the assessment of anesthetic depth in horses undergoing xylazine balanced isoflurane anesthesia. STUDY DESIGN: Blinded experimental study. ANIMALS: Seven healthy warm-blooded horses, aged 10.6 ± 5.9 years, weighing 535 ± 55 kg. METHODS: Horses were anesthetized for a terminal surgical trial with xylazine, thiopentone, and guaiphenesin for induction and isoflurane and xylazine continuous rate infusion for maintenance...
2016: Frontiers in Veterinary Science
J Z Liu, J Zhao, Y J Zhang
OBJECTIVE: To compare the effectiveness of the jaw thrust and the trapezius squeezing test(TST) for laryngeal mask airway (LMA) insertion in infants and children under sevoflurane anesthesia. METHODS: A total of 100 children aged from 6 month to 3 years, American Society of Anesthesiologists(ASA) Ⅰ-Ⅱ and undergoing minor operation were enrolled from January to June 2015 in Tianjin Children's Hospital. The patients were randomly divided into jaw thrusting group (Group J, n=50)and trapezius squeezing group(Group T, n=50)...
February 2016: Zhonghua Yi Xue za Zhi [Chinese medical journal]
Yiluan Wang, Liqiong Chen, Bin Wu, Xutong Zhang, Chunchun Zhu, Ying Li, Kailai Zhu, Jun Li
OBJECTIVE: To explore the feasibility of different doses of dexmedetomidine for quiet extubation during anesthesia recovery in hypertensive patients monitored with Narcotrend. METHODS: A total of 120 hypertensive patients scheduled for thyroid surgery from August 2012 to June 2014 in the Second Affiliated Hospital of Wenzhou Medical University, were randomly divided into 6 groups (n=20 each). Dexmedetomidine 0.4 (group M1), 0.6 (group M2), 0.8 (group M3) or 1.0 (group M4) µg·kg(-1)·h(-1), remifentanil 0...
October 13, 2015: Zhonghua Yi Xue za Zhi [Chinese medical journal]
Klaus A Otto
The electroencephalogram (EEG) Narcotrend index (NI) has been shown to improve anaesthetic depth monitoring in isoflurane-anaesthetised sheep. Data obtained from 13 anaesthetised juvenile female sheep were analysed retrospectively in order to assess the relationship between clinical stages of anaesthesia (CS) and NI during both propofol and isoflurane anaesthesia. Polynomial regression analysis revealed no significant association between CS and NI for propofol (R = 0.374, R(2) = 0.140, P = 0.403) but for isoflurane anaesthesia (R = 0...
February 2016: Veterinary Journal
Guangyou Duan, Shanna Guo, Huiming Zhan, Dongmei Qi, Yuhao Zhang, Xianwei Zhang
Individual variability in the effects of opioid analgesics such as fentanyl remains a major challenge for tailored pharmacological treatment including postoperative analgesia. This study aimed to establish a new real-time method for detecting the effects of fentanyl and their individual differences in the preoperative period, using the pressure pain threshold (PPT) and Narcotrend index (NTI) test.Eighty women undergoing elective surgery under general anesthesia were enrolled in this randomized, double-blinded, placebo-controlled study to receive either intravenous fentanyl (Group F) or saline (Group S)...
January 2015: Medicine (Baltimore)
Yiding Chen, Hongwei Zhang, Yumin Tang, Jingjun Shu
OBJECTIVE: To investigate the impact of electroacupuncture (EA) at bilateral acupuncture points ST36 and PC6 on the level of sedation in general anaesthesia. METHODS: 40 patients undergoing abdominal surgery were randomly divided into two groups: EA combined with general anaesthesia (EA group, n=20) and general anaesthesia control group (n=20). The bilateral acupuncture points ST36 and PC6 were selected in both groups. Target-controlled infusion (TCI) of propofol was used for the induction and maintenance of general anaesthesia to reach an equilibrium state of Narcotrend Index (NT index)...
April 2015: Acupuncture in Medicine: Journal of the British Medical Acupuncture Society
Xiao-Yu Yang, Zhi-Bin Zhou, Lu Yang, Xue Zhou, Li-Jun Niu, Xia Feng
BACKGROUND: Hemodynamic stability is one of the most critical concerns during induction of anesthesia. Whether the pharmacokinetic model by Marsh or the one by Schnider will produce better hemodynamic stability remains unclear. This study compared hemodynamic changes during induction between the two models. METHODS: 60 patients who underwent elective surgery were randomly assigned to plasma target-controlled infusion by Marsh's (n = 30) or Schnider's (n = 30) model with an initial target concentration of 4 μg×mL-1...
January 2015: International Journal of Clinical Pharmacology and Therapeutics
Yong-sheng Qiu, Qing Xu
No abstract text is available yet for this article.
December 2014: Chinese Medical Sciences Journal, Chung-kuo i Hsüeh K'o Hsüeh Tsa Chih
Zhenggang Guo, Liwei Pang, Xiaopeng Jia, Xiaoyan Wang, Xiaojun Su, Ping Li, Weidong Mi, Jianhua Hao
OBJECTIVE: This study aims to evaluate the feasibility of intraoperative composite target-controlled infusion (TCI) anesthesia application using remifentanil hydrochloride with etomidate in patients with severe burns, as monitored by Narcotrend. METHODS: A total of 40 patients with severe burns with eschar excisions and skin grafts were randomly and equally grouped into the etomidate (E) and the propofol groups (P). Anesthesia was induced and maintained by a remifentanil hydrochloride TCI combined with etomidate or propofol...
February 2015: Burns: Journal of the International Society for Burn Injuries
Keyun Tian, Yin Kang, Longjiao Deng, Hong Liu, Haifeng Li, Zhipeng Wang, Guodong Zhao
OBJECTIVE: To investigate the effects of different anesthesia depth on stress response in elderly patients undergoing elective laparoscopic surgery for colorectal cancer. METHODS: A total of 105 ASA I-III patients aged 60-91 years undergoing elective laparoscopic surgery for colorectal cancer with general anesthesia were randomized into 3 groups, namely group A with a target Narcotrend index (NI) maintained at D0 level, group B with a NI at D2 level, and group C with a NI at E1 level...
May 2014: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
Yiyan Jiang, Bin Qiao, Lili Wu, Xiaona Lin
BACKGROUND AND OBJECTIVES: To investigate the clinic effectiveness, safety and feasibility of Narcotrend® monitor for evaluation of depth of anesthesia in congenital heart disease (CHD) infants undergoing cardiac surgery. METHODS: A total of 80 infants receiving general anesthesia in selective surgery were randomly selected. Infants were assigned into two groups (n = 40 per group). In the Narcotrend group, the depth of anesthesia was monitored with the Narcotrend monitor...
May 2013: Brazilian Journal of Anesthesiology
Xiao-bin Fang, Wei-yu Yao, Shi-yang Li
OBJECTIVE: Explore the feasibility and superiority about Supreme double-lumen laryngeal mask airway for cesarean section anesthesia. METHODS: From March 2011 to March 2012, a total of 300 patients with American Society of Anesthesiologists (ASA) I or II foot of cesarean section in full-term pregnant women for the first time production of Quanzhou Women's and Children's Hospital were recruited, authenticated by Hospital Ethics Committee, they were randomly divided into three groups (Random number table), dual-chamber in the LMA group (A group of 100 cases), tracheal intubation group (B group of 100 cases) and spinal anesthesia group (C group of 100 cases)...
May 21, 2013: Zhonghua Yi Xue za Zhi [Chinese medical journal]
J Shepherd, J Jones, Gk Frampton, J Bryant, L Baxter, K Cooper
BACKGROUND: It is important that the level of general anaesthesia (GA) is appropriate for the individual patient undergoing surgery. If anaesthesia is deeper than required to keep a patient unconscious, there might be increased risk of anaesthetic-related morbidity, such as postoperative nausea, vomiting and cognitive dysfunction. This may also prolong recovery times, potentially increasing health-care costs. If anaesthesia is too light, patients may not be fully unconscious and could be at risk of intraoperative awareness...
August 2013: Health Technology Assessment: HTA
Yiyan Jiang, Bin Qiao, Lili Wu, Xiaona Lin
BACKGROUND AND OBJECTIVES: To investigate the clinic effectiveness, safety and feasibility of Narcotrend® monitor for evaluation of depth of anesthesia in congenital heart disease (CHD) infants undergoing cardiac surgery. METHODS: A total of 80 infants receiving general anesthesia in selective surgery were randomly selected. Infants were assigned into two groups (n=40 per group). In the Narcotrend group, the depth of anesthesia was monitored with the Narcotrend monitor...
May 2013: Brazilian Journal of Anesthesiology
Somchai Amornyotin, Wiyada Chalayonnawin, Siriporn Kongphlay
INTRODUCTION: Parecoxib is occasionally used for analgesia in postprocedural patients. The clinical efficacy of parecoxib used for endoscopic retrograde cholangiopancreatography (ERCP) is controversial. The aim of the study was to determine the clinical efficacy of preprocedure administration of parecoxib for therapeutic ERCP patients. METHODS: Eighty-five patients who underwent therapeutic ERCP in a single year were randomly assigned to normal saline group (C, n = 43) and parecoxib group (P, n = 42)...
2012: Journal of Pain Research
Zheng-gang Guo, Xiao-yan Wang, Xu-lei Lü, Xiao-jun Su, Jian-hua Hao
OBJECTIVE: To evaluate the feasibility and efficacy of Narcotrend (NT) monitor in monitoring the depth of anesthesia in severely burned patients with target-controlled infusion (TCI) of remifentanil hydrochloride and propofol during perioperative period. METHODS: Eighty patients with severe burn hospitalized from February to November 2011, to whom eschar excision was performed within one week after injury, were enrolled. They were classified into II to III grade according to the American Society of Anesthetists classification, and their total burn area ranged from 31% to 50%TBSA, or full-thickness burn area from 11% to 20% TBSA...
June 2012: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
M Neukirchen, J Hipp, M S Schaefer, T Brandenburger, I Bauer, M Winterhalter, P Kienbaum, R Werdehausen
BACKGROUND: Intraoperative hypotension is associated with increased risk of perioperative complications. The N-methyl-d-aspartate (NMDA) receptor (NMDA-R) antagonist xenon (Xe) induces general anaesthesia without impairment of cardiac output and vascular resistance. Mechanisms involved in cardiovascular stability have not been identified. METHODS: Muscle sympathetic activity (MSA) (microneurography), sympathetic baroreflex gain, norepinephrine (NE) plasma concentration (high-performance liquid chromatography), anaesthetic depth (Narcotrend(®) EEG monitoring), and vital parameters were analysed in vivo during Xe mono-anaesthesia in human volunteers (n=8)...
December 2012: British Journal of Anaesthesia
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