scholarly journals Remifentanil Alleviates Propofol-Induced Burst Suppression without Affecting Bispectral Index in Female Patients: A Randomized Controlled Trial

2019 ◽  
Vol 8 (8) ◽  
pp. 1186
Author(s):  
Dahye Jung ◽  
Sungwon Yang ◽  
Min Soo Lee ◽  
Yoonki Lee
Keyword(s):  
Bispectral Index ◽  
Suppression Ratio ◽  
Controlled Trial ◽  
Burst Suppression ◽  
Remifentanil Infusion ◽  
Female Patients ◽  
Effect Site ◽  
Effect Site Concentration ◽  
American Society ◽  
American Society Of Anesthesiologists

The bispectral index is affected by various factors, such as noxious stimuli and other drugs, such as muscle relaxants. The burst suppression ratio from bispectral index monitoring is correlated with electroencephalographic burst suppression, which is associated with deep anesthesia, metabolic disorders, and brain injury. We assessed patients undergoing total intravenous anesthesia and examined the effects of remifentanil on the bispectral index, burst suppression ratio, and hemodynamic changes immediately after loss of consciousness with propofol. Seventy American Society of Anesthesiologists physical status class I and II Korean female patients scheduled for general anesthesia were administered propofol with an effect-site concentration of 5 μg/mL, using a target-controlled infusion (TCI). After losing consciousness, patients received either saline or remifentanil at an effect-site concentration of 5 ng/mL for 10 min. During this period, we recorded the bispectral index values, including burst suppression ratio, blood pressure, and heart rate. With remifentanil infusion, burst suppression ratios were lower (p < 0.01) but bispectral values were not different. The burst suppression ratio was significantly different at 6, 7, 8, and 10 min after remifentanil infusion (p < 0.05). In female patients with propofol-induced unconsciousness, remifentanil alleviated the burst suppression ratio without affecting the bispectral value.

Targeting Effect Compartment or Central Compartment Concentration of Propofol 

1999 ◽  
Vol 90 (1) ◽  
pp. 92-97 ◽  
Author(s):  
Howard G. Wakeling ◽  
John B. Zimmerman ◽  
Scott Howell ◽  
Peter S. A. Glass
Keyword(s):  
Central Compartment ◽  
Pharmacokinetic Parameters ◽  
Effect Compartment ◽  
Effect Site ◽  
Anesthetic Drugs ◽  
Effect Site Concentration ◽  
American Society ◽  
Target Effect ◽  
American Society Of Anesthesiologists ◽  
To Receive

Background An effect compartment has been postulated, and the ke0 has been quantified for several intravenous anesthetic drugs using electroencephalography (EEG) as the measure of effect. The authors wanted to validate that loss of responsiveness (LOR) was related to targeting an effect compartment concentration rather than a central compartment (plasma) concentration. Methods Twenty American Society of Anesthesiologists physical status I and II patients were randomized to receive propofol administered to a target central compartment or target effect compartment site concentration of 5.4 microg/ml propofol administered by a target-controlled infusion (TCI) using a previously validated set of pharmacokinetic parameters and a ke0 of 0.63 min(-1). Every 30 s for the first 5 min and every minute for the second 5 min the patients were asked to open their eyes. The time to LOR was measured by a blinded investigator. The authors also simulated the time to reach the desired target effect site concentration using varying ke0 values. Results The median time to LOR in the group targeted to a predicted plasma propofol concentration was 3.02 min and 1.23 min in the group targeted to a predicted effect compartment propofol concentration (P &lt; 0.05). LOR to command in both groups occurred at a predicted median effect compartment concentration of 4.55 microg/ml. Simulations demonstrated that the time predicted to LOR targeting an effect site concentration of 5.4 microg/ml is markedly altered by the value chosen for the ke0. Conclusions This study confirms the utility of the ke0 value to describe the effect compartment for propofol. The authors also illustrate the importance of selecting the correct ke0 value for the pharmacokinetic parameters used within the TCI system.

scholarly journals Reliable and rapid smooth extubation after Ketofol for induction of general anesthesia in Laparoscopic Drilling of polycystic ovary: A randomized controlled trial

2020 ◽  
Author(s):  
Atef Mohamed Sayed Mahmoud ◽  
Joseph Makram Botros ◽  
Safaa Gaber Ragab
Keyword(s):  
General Anesthesia ◽  
Polycystic Ovary ◽  
Controlled Trial ◽  
Controlled Study ◽  
Double Blind ◽  
Randomized Controlled ◽  
Airway Response ◽  
American Society ◽  
American Society Of Anesthesiologists ◽  
Better Than

Abstract Background the outcome of ketofol on the hemodynamics and the airway response during induction of general anesthesia has been studied before. Its effect on smoothness of extubation has not been studied before. So, we aimed to assess the effect of ketofol on the smoothness of extubation and compare it with propofol only for induction of general anesthesia. Methods This double-blind, randomized, and controlled study was conducted on one hundred and six American Society of Anesthesiologists Physical status ''ASA PS'' class I and II female patients aged 18–40 years old and scheduled for laparoscopic drilling for polycystic ovary disease under general anesthesia. The patients were assigned into one of two groups (53) patients each; group KP = ketofol and group P = propofol. Results There was good sedation score during suction and extubation in the ketofol group. Airway response and smoothness of extubation were better in the ketofol group better than the propofol group. Conclusion Ketofol as an induction anesthetic agent was effective in attenuating the airway response during extubation more than profofol only. Trial registration: This trial was retrospectively registered at the Clinical Trial.gov with the Identification Number: NCT04365686.

Electroacupuncture at St36 Accelerates the Recovery of Gastrointestinal Motility after Colorectal Surgery: A Randomised Controlled Trial

2014 ◽  
Vol 32 (3) ◽  
pp. 223-226 ◽  
Author(s):  
Zhaodi Zhang ◽  
Changsong Wang ◽  
Quanyi Li ◽  
Mingyue Zhang ◽  
Haifang Zhao ◽  
...  
Keyword(s):  
Colorectal Surgery ◽  
Gastrointestinal Motility ◽  
Controlled Trial ◽  
Bowel Function ◽  
Group 13 ◽  
Group Data ◽  
Significant Difference ◽  
American Society ◽  
Randomised Controlled ◽  
American Society Of Anesthesiologists

Objectives To evaluate whether electroacupuncture (EA) at ST36 can accelerate the recovery of gastrointestinal motility after colorectal surgery. Methods Forty patients of American Society of Anesthesiologists physical status II and III undergoing elective open resection of malignant colorectal tumours were included in this study. Using a sealed envelope method, the patients were randomly divided into two groups either receiving EA (EA group) or sham EA (SEA group). Data regarding the recovery of bowel function (times to the first bowel sounds, passage of flatus and defaecation) were collected and analysed. Results In the EA group, the time intervals from surgery to the first bowel movement and passage of flatus were shorter than in the SEA group (13±10 h vs 19±13 h, p<0.05 and 23±14 h vs 32±18 h, p<0.05, respectively). There was no significant difference between the groups regarding the time to first defaecation (68±45 h vs 72±53 h, p>0.05). Conclusions EA at ST36 accelerates the recovery of gastrointestinal motility after colorectal surgery. Trial Registration JJ22011-15.

scholarly journals Oxycodone for prevention of etomidate-induced myoclonus: a randomized double-blind controlled trial

2018 ◽  
Vol 46 (5) ◽  
pp. 1839-1845
Author(s):  
Wei Wang ◽  
Jie Lv ◽  
Qi Wang ◽  
Lei Yang ◽  
Wanyou Yu
Keyword(s):  
General Anesthesia ◽  
Intravenous Injection ◽  
Adverse Reactions ◽  
Controlled Trial ◽  
Vital Signs ◽  
Physical Status ◽  
Double Blind ◽  
American Society ◽  
American Society Of Anesthesiologists

Objective This study was performed compare the effectiveness of oxycodone and fentanyl in reducing the incidence and severity of etomidate-induced myoclonus. Methods In total, 162 patients with an American Society of Anesthesiologists physical status of I or II were assigned at random to three groups. Patients assigned to Group O received 0.1 mg/kg of oxycodone (n = 54), those assigned to Group F were given 1 µg/kg of fentanyl (n = 54), and those assigned to Group S were given an equal volume of saline intravenously 2 minutes prior to administration of 0.3 mg/kg of etomidate (n = 54). The incidence and severity of myoclonus was evaluated 2 minutes after etomidate administration. The patients’ vital signs, coughing, nausea, dizziness, and other related adverse reactions were also recorded. Results The incidence of myoclonus was significantly lower in Group O (0.0%) than in Group F (31.5%) and Group S (72.2%); the intensity was also lowest in Group O. All patients in each group had stable cardiovascular profiles. Conclusions Intravenous injection of 0.1 mg/kg of oxycodone 2 minutes prior to etomidate is more effective in preventing etomidate-induced myoclonus during general anesthesia than is 1 µg/kg of fentanyl.

Performance of the ARX-derived Auditory Evoked Potential Index as an Indicator of Anesthetic Depth

2002 ◽  
Vol 96 (4) ◽  
pp. 803-816 ◽  
Author(s):  
Michel M. R. F. Struys ◽  
Erik Weber Jensen ◽  
Warren Smith ◽  
N. Ty Smith ◽  
Ira Rampil ◽  
...  
Keyword(s):  
Bispectral Index ◽  
Evoked Potential ◽  
Auditory Evoked Potential ◽  
Noxious Stimulus ◽  
Gynecologic Surgery ◽  
Effect Compartment ◽  
Loss Of Consciousness ◽  
Anesthetic Depth ◽  
Effect Site ◽  
Effect Site Concentration

Background Autoregressive modeling with exogenous input of middle-latency auditory evoked potential (A-Line autoregressive index [AAI]) has been proposed for monitoring anesthetic depth. The aim of the current study was to compare the accuracy of this new index with the Bispectral Index (BIS), predicted effect-site concentration of propofol, and hemodynamic measures. Methods Twenty female patients scheduled for ambulatory gynecologic surgery received effect compartment controlled infusion of propofol. Target effect-site concentration was started at 1.5 microg/ml and increased every 4 min by 0.5 microg/ml. At every step, sedation level was compared with monitoring values using different clinical scoring systems and reaction to noxious stimulus. Results Bispectral Index, AAI, and predicted propofol effect-site concentration were accurate indicators for the level of sedation and loss of consciousness. Hemodynamic variables were poor indicators of the hypnotic-anesthetic status of the patient. BIS correlated best with propofol effect-site concentration, followed by AAI. Hemodynamic measurements did not correlate well. No indicators predicted reaction to noxious stimulus. Poststimulus, BIS and AAI showed an increase as a result of arousal. This reaction occurred more rapidly with the AAI than with BIS. Conclusion Bispectral Index, AAI, and predicted propofol effect-site concentration revealed information on the level of sedation and loss of consciousness but did not predict response to noxious stimulus.

scholarly journals Changes of Hemodynamics and Bispectral Index by Tracheal Intubation according to Effect-site Concentration of Remifentanil during Propofol Anesthesia

2007 ◽  
Vol 53 (5) ◽  
pp. 565 ◽  
Author(s):  
Hong Sik Lee ◽  
Jang-Ho Song ◽  
Helen Ki Shinn ◽  
Jeong Uk Han ◽  
Jong-Kwon Jung ◽  
...  
Keyword(s):  
Tracheal Intubation ◽  
Bispectral Index ◽  
Effect Site ◽  
Effect Site Concentration

scholarly journals Italian Version of Corah's Dental Anxiety Scale: Normative Data in Patients Undergoing Oral Surgery and Relationship With the ASA Physical Status Classification

2008 ◽  
Vol 55 (4) ◽  
pp. 109-115 ◽  
Author(s):  
Enrico Facco ◽  
Gastone Zanette ◽  
Giovanni Manani
Keyword(s):  
Oral Surgery ◽  
Dental Anxiety ◽  
Anxiety Scale ◽  
Physical Status ◽  
Patients Âgés ◽  
Female Patients ◽  
Physical Status Classification ◽  
Status Classification ◽  
American Society ◽  
American Society Of Anesthesiologists

Abstract To test the Italian translation of Corah's Dental Anxiety Scale (DAS) and to check the relationship between dental anxiety and the American Society of Anesthesiologists (ASA) physical status classification (ASA-PS), the DAS was translated into Italian and administered to 1072 Italian patients (620 male and 452 female patients, ages 14–85 years) undergoing oral surgery. Patients' conditions were checked and rated according to the ASA-PS. The DAS ranged from 4 to 20 (modus  =  8, median  =  10); 59.5% of patients had a DAS of 7–12, 26.1% had a DAS &gt;12, and 10.3% had a DAS &gt;15. The mean DAS was 10.29 (95% confidence limit  =  0.19); female patients were more anxious than male patients (P &lt; .001), while patients older than 60 years showed a significant decrease in the level of anxiety. Five hundred two patients were rated as ASA-PS class P1, 502 as ASA-PS class P2, and 68 as ASA-PS class P3, with a mean DAS score of 9.69, 10.78, and 11.09, respectively: the DAS difference between groups was significant (P &lt; .001).

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