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Bispectral index monitoring

Rajasree Omanakutty Amma, Subha Ravindran, Rachel Cherian Koshy, K M Jagathnath Krishna
BACKGROUND AND AIMS: With the availability of modern workstations and heightened awareness on the environmental effects of waste anaesthesia gases, anaesthesiologists worldwide are practicing low flow anaesthesia (LFA). Although LFA is being practiced in India, hard evidence on the current practice of the same from anaesthesiologists practicing in India is lacking and hence, we conducted this survey. METHODS: A questionnaire containing 16 questions was distributed among a subgroup of anaesthesiologists who attended the 2014 National Conference of Indian Society of Anaesthesiologists...
October 2016: Indian Journal of 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
Neena Jain, Pooja Rawat Mathur, Shoyeb Khan, Arvind Khare, Veena Mathur, Surendra Sethi
BACKGROUND AND AIMS: Early extubation is a desirable goal after general anesthesia. Very few studies have compared the effect of bispectral index (BIS) monitoring versus standard end-tidal anesthetic gas (ETAG) concentration monitoring on tracheal extubation time for halothane-based anesthesia. The aim of this study was to compare the effect of BIS versus ETAG-guided anesthesia on time to tracheal extubation for halothane-based anesthesia in general surgical setting. METHODS: This was a randomized, controlled double-blind study...
September 2016: Anesthesia, Essays and Researches
Youn Yi Jo, Dongchul Lee, Wol Seon Jung, Noo Ree Cho, Hyun Jeong Kwak
BACKGROUND Despite the high frequency of hypotension during spinal anesthesia with proper sedation, no previous report has compared the hemodynamic effects of dexmedetomidine and midazolam sedation during spinal anesthesia. We compared the effects of bispectral index (BIS)-guided intravenous sedation using midazolam or dexmedetomidine on hemodynamics and recovery profiles in patients who underwent spinal anesthesia. MATERIAL AND METHODS One hundred and sixteen adult patients were randomly assigned to receive either midazolam (midazolam group; n=58) or dexmedetomidine (dexmedetomidine group; n=58) during spinal anesthesia...
October 4, 2016: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
Ozlem Ozkalayci, Coskun Araz, Sevi Burcak Cehreli, Resmiye Ebru Tirali, Zeynep Kayhan
STUDY OBJECTIVE: The study aimed to investigate the effects of listening to music or providing sound isolation on the depth of sedation and need for sedatives in pediatric dental patients. DESIGN: Prospective, randomized, and controlled study. SETTING: Tertiary, university hospital. PATIENTS: In total, 180 pediatric patients, American Society of Anesthesiologists physical status I and II, who were scheduled for dental procedures of tooth extraction, filling, amputation, and root treatment...
November 2016: Journal of Clinical Anesthesia
Alexandre Joosten, Amélie Delaporte, Maxime Cannesson, Joseph Rinehart, Jean Philippe Dewilde, Luc Van Obbergh, Luc Barvais
Automated delivery of anesthesia guided by processed electroencephalogram monitoring using a closed-loop system is no longer a novel concept. However, combining multiple independent physiologic closed-loop systems together has never been documented before. The purpose of this case report was to evaluate the feasibility of automated anesthesia and fluid management based on a combination of physiological variables (bispectral index, stroke volume, and stroke volume variations) using 2 independent closed-loop systems...
September 23, 2016: A & A Case Reports
Eva-Lena Zetterlund, Henrik Gréen, Anna Oscarsson, Svante Vikingsson, Magnus Vrethem, Maj-Lis Lindholm, Christina Eintrei
BACKGROUND: Computer-processed algorithms of encephalographic signals are widely used to assess the depth of anaesthesia. However, data indicate that the bispectral index (BIS), a processed electroencephalography monitoring system, may not be reliable for assessing the depth of anaesthesia. OBJECTIVE: The aim of this study was to evaluate the ability of the BIS monitoring system to assess changes in the level of unconsciousness, specifically during the transition from consciousness to unconsciousness, in patients undergoing total intravenous anaesthesia with propofol...
September 7, 2016: European Journal of Anaesthesiology
Qing-Tao Meng, Chen Cao, Hui-Min Liu, Zhong-Yuan Xia, Wei Li, Ling-Hua Tang, Rong Chen, Meng Jiang, Yang Wu, Yan Leng, Chris C Lee
The aim of the present study is to compare the safety, efficacy and cost effectiveness of anesthetic regimens by compound, using etomidate and propofol in elderly patients undergoing gastroscopy. A total of 200 volunteers (65-79 years of age) scheduled for gastroscopy under anesthesia were randomly divided into the following groups: P, propofol (1.5-2.0 mg/kg); E, etomidate (0.15-0.2 mg/kg); P+E, propofol (0.75-1 mg/kg) followed by etomidate (0.075-0.1 mg/kg); and E+P, etomidate (0.075-0.01 mg/kg) followed by propofol (0...
September 2016: Experimental and Therapeutic Medicine
Natividad Quesada, Diego Júdez, Javier Martínez Ubieto, Ana Pascual, Enrique Chacón, Francisco De Pablo, Elisa Mincholé, Salvador Bello
BACKGROUND: Current guidelines recommend monitoring the anesthetic depth of sedation during respiratory endoscopy by using clinical scales despite their subjective nature and the potential change in the level of sedation caused by frequent stimulation. Monitoring by means of the bispectral index (BIS) has shown its utility in reducing the use of drugs and their adverse events in general anesthesia, but evidence in prolonged sedation is insufficient. OBJECTIVE: Our objective was to evaluate BIS in patients undergoing endobronchial ultrasound (EBUS)...
2016: Respiration; International Review of Thoracic Diseases
Erica J Stein, David B Glick
PURPOSE OF REVIEW: Initial studies suggested that the use of processed electroencephalogram technology could significantly decrease the incidence of unintended intraoperative awareness events during general anesthesia. Subsequent work has cast doubts on these findings. This review will examine the current state of awareness monitoring. RECENT FINDINGS: Recently published randomized controlled trials examining the use of the bispectral index during general anesthesia have not been able to show superiority over other forms of monitoring depth of anesthesia, such as end-tidal anesthetic-agent concentration...
August 31, 2016: Current Opinion in Anaesthesiology
Man-Ling Wang, Ming-Hui Hung, Kuang-Cheng Chan, Jin-Shing Chen, Ya-Jung Cheng
OBJECTIVE(S): Less general anesthetic is required in patients with regional blocks than in those without, as assessed through commonly used anesthesia monitoring parameters such as blood pressure, heart rate, and bispectral index (BIS). Although intraoperative regional anesthesia has become more widely adopted, few studies have confirmed or monitored its anesthetic-sparing effects. Using recent reports of nonintubated video-assisted thoracoscopic surgery (VATS) by BIS-targeted propofol infusion and intraoperative multilevel thoracoscopic intercostal nerve blocks (TINBs), this retrospective study investigated whether the anesthetic-sparing effect can be realized by reducing the effect-site concentration (Ce) to the targeted BIS level or by reducing the blood pressure at the onset of regional blocks...
August 23, 2016: Acta Anaesthesiologica Taiwanica: Official Journal of the Taiwan Society of Anesthesiologists
Hanife Karakaya Kabukcu, Nursel Sahin, Kezban Ozkaloglu, Ilhan Golbasi, Tulin Aydogdu Titiz
INTRODUCTION: To obtain the optimal anesthesia depth is not easy in cardiovascular surgery patients where the haemodynamic reserve is limited, due to reasons such as not being able to give the desired dose of anesthetic agent, or the change in the pharmacokinetics of the agent in the heart-lung machine. This study was planned to assess the contribution of bispectral index (BIS) monitoring in the depth of anesthesia. METHODS: The patients were divided into 2 groups, and BIS monitoring was used for each patient...
April 2016: Brazilian Journal of Cardiovascular Surgery
M Lisy, E Schmid, J Kozok, P Rosenberger, U A Stock, G Kalender
AIM: Intraoperative allogeneic blood product transfusion (ABPT) in cardiac surgery is associated with worse overall outcome, including mortality. The objective of this study was to evaluate the ABPTs in minimalized extracorporeal cardiopulmonary (MECC(TM)) compared with standard open system on-pump coronary revascularization. METHODS: Data of 156 patients undergoing myocardial revascularization between September 2008 and September 2010 were reviewed. 83 patients were operated by the MECC technique and 73 were treated by standard extracorporeal circulation (sECC)...
2016: Open Cardiovascular Medicine Journal
Zhiqing Gu, Quanying Jin, Junjun Liu, Lianhua Chen
The shortcomings of laryngeal mask airway (LMA™), such as upper airway obstruction and gastric distension or airway leakage, may limit its application in small children. The I-gel™ (I-gel), LMA-Supreme™ (LMA-S), and Ambu AuraOnce™ (Ambu) are three improvements upon these shortcomings. This study adopted respiratory dynamic monitoring to observe the ventilation parameters of the three laryngeal masks in small children. A total of 105 children were randomized into Ambu (n = 35), I-gel (n = 35), and LMA-S (n = 35) groups...
August 4, 2016: Journal of Clinical Monitoring and Computing
Yan Li, Lingzhong Meng, Yuming Peng, Hui Qiao, Lanjun Guo, Ruquan Han, Adrian W Gelb
BACKGROUND: We hypothesized that the addition of dexmedetomidine in a clinically relevant dose to propofol-remifentanil anesthesia regimen does not exert an adverse effect on motor-evoked potentials (MEP) and somatosensory-evoked potentials (SSEP) in adult patients undergoing thoracic spinal cord tumor resection. METHODS: Seventy-one adult patients were randomized into three groups. Propofol group (n = 25): propofol-remifentanil regimenand the dosage was adjusted to maintain the bispectral index (BIS) between 40 and 50...
2016: BMC Anesthesiology
Eun Hee Chun, Myeong Jae Han, Hee Jung Baik, Hahck Soo Park, Rack Kyung Chung, Jong In Han, Hun Jung Lee, Jong Hak Kim
BACKGROUND: Dexmedetomidine as a sole agent showed limited use for painful procedures due to its insufficient sedative/analgesic effect, pronounced hemodynamic instability and prolonged recovery. The aim of this study was to compare the effects of dexmedetomidine-ketamine (DK) versus dexmedetomidine-midazolam-fentanyl (DMF) combination on the quality of sedation/analgesia and recovery profiles for monitored anesthesia care (MAC). METHODS: Fifty six patients undergoing chemoport insertion were randomly assigned to group DK or DMF...
2016: BMC Anesthesiology
Chelsea L Tasaka, Jeremiah J Duby, Komal Pandya, Machelle D Wilson, Kimberly A Hardin
BACKGROUND: Patients receiving therapeutic paralysis may experience inadequate sedation due to intrinsic limitations of behavioral sedation assessment. Bispectral index (BIS™) provides an objective measure of sedation; however, the role of BIS™ is not well defined in intensive care unit (ICU) patients on neuromuscular blocking agents (NMBA). OBJECTIVE: The aim of this study was to delineate the relationship between BIS™ and level of sedation for critically ill patients during therapeutic paralysis...
June 2016: Drugs—Real World Outcomes
L Dong, L Chen, T Shi, M Wei, H Z Zhang, Y P Li, L She, Z C Yan
OBJECTIVE: To investigate the value of simultaneous bispectral index (BIS) and intracranial pressure (ICP) monitoring to evaluate postoperative consciousness and short-term prognosis in patients with severe traumatic brain injury. METHODS: We evaluated 30 brain trauma coma patients in the People's Hospital of Northern Jiangsu Province from January 2014 to December 2014 and evaluated Glasgow Coma Scale (GCS) scores at 8-h intervals for 3days after surgery. BIS and ICP values were recorded at the same time...
September 2016: Clinical Neurology and Neurosurgery
Rafael Badenes, María L García-Pérez, Federico Bilotta
PURPOSE OF REVIEW: This review reports recent evidence on intraoperative monitoring of cerebral oximetry and depth of anaesthesia during neuroanaesthesia procedures. RECENT FINDINGS: The clinical benefits of intraoperative monitoring with cerebral oximetry [near infrared spectroscopy (NIRS) and brain tissue oxygenation monitoring (brptiO2)] and depth of anaesthesia with bispectral index (BIS) have recently been studied in surgical (carotid endarterectomy, cerebral arteriovenous malformations resection and brain tumour resections) and neuroradiological vascular procedures...
October 2016: Current Opinion in Anaesthesiology
Nuran Akıncı, Nurten Bakan, Gülşah Karaören, Senay Göksu Tomruk, Hacı Mehmet Sökmen, Yonca Yanlı, Mehmet Erdem Akçay
OBJECTIVE: This study aimed to compare 50 mg dexketoprofen vs. 1 g paracetamol that were parenterally administered before endoscopic retrograde cholangiopancreatography (ERCP) under sedoanalgesia with comparable anaesthesia depth regarding haemodynamic, pain, narcotic analgesic requirement, recovery and post-procedural cognitive functions. METHODS: Overall, 80 ASA I-III patients aged 18-75 years who were undergoing scheduled ERCP were randomly assigned into three groups...
February 2016: Turkish Journal of Anaesthesiology and Reanimation
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