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Bispectral index

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https://www.readbyqxmd.com/read/28719431/bispectral-index-measurements-are-not-degraded-during-aeromedical-evacuations
#1
Nicolas Donat, Audrey Cirodde, Clément Hoffmann, Jean-Vivien Schaal, Yannick Masson, Antoine Nau, Paul Vincent Martin, Samuel Madec, Thomas Leclerc
For a decade, depth of anesthesia monitoring has become a reality in the operating room. It provides valuable help for managing anesthesia, especially for unstable patients. This might be particularly relevant during aeromedical evacuation. In this study, we aimed to assess the validity of the bispectral index (BIS) during long-range patient transportation aboard fixed-wing aircraft. BIS was recorded in 30 patients, 25 under anesthesia and 5 awake, during aeromedical evacuations performed by the French Air Force...
July 14, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28711570/anesthetic-management-of-reversible-cerebral-vasoconstriction-syndrome-a-case-report
#2
Hiroshi Hoshijima, Naoki Itoh, Yoshinori Iwase, Hiroshi Nagasaka
Reversible cerebral vasoconstriction syndrome (RCVS) is a group of disorders characterized by prolonged reversible cerebral vasoconstriction, associated with acute-onset, severe, episodic "thunderclap" headaches with or without other neurologic clinical features. We describe the first reported case, to our knowledge, of a patient with RCVS who was managed under general anesthesia in the field of oral and maxillofacial surgery. A 67-year-old woman with a diagnosis of RCVS made 2 months earlier was scheduled to undergo surgical extraction of the mandibular right third molar...
June 14, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28683817/the-effects-of-intravenous-lignocaine-on-depth-of-anaesthesia-and-intraoperative-haemodynamics-during-open-radical-prostatectomy
#3
Laurence Weinberg, Jae Jang, Clive Rachbuch, Chong Tan, Raymond Hu, Larry McNicol
BACKGROUND: Lignocaine is a local anaesthetic agent, which is also commonly used as a perioperative analgesic adjunct to accelerate rehabilitation and enhance recovery after surgery. Lignocaine's systemic effects on intraoperative haemodynamics and volatile anaesthetic requirements are not well explored. Therefore, we evaluated the effects of intravenous lignocaine on intraoperative volatile agent requirements and haemodynamics in patients undergoing major abdominal surgery. METHODS: We performed an analysis of 76 participants who underwent elective open radical retropubic prostatectomy...
July 6, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28682828/criteria-for-intensive-care-admission-and-monitoring-after-elective-craniotomy
#4
Rafael Badenes, Lara Prisco, Armando Maruenda, Fabio S Taccone
PURPOSE OF REVIEW: The current article revises the recent evidence on ICU admission criteria and postoperative neuromonitoring for patients undergoing elective craniotomy. RECENT FINDINGS: Only a small proportion of elective postoperative neurosurgical patients require specific medical interventions and invasive monitoring. Among these, patients undergoing elective craniotomy are frequently admitted to neuro-ICU, specialist postanaesthesia care units or intermediate-level care unit in the postoperative period...
July 5, 2017: Current Opinion in Anaesthesiology
https://www.readbyqxmd.com/read/28678075/patients-undergoing-orthotopic-liver-transplantation-require-lower-concentrations-of-the-volatile-anesthetic-sevoflurane
#5
Joanna Baron-Stefaniak, Viola Götz, Andreas Allhutter, Judith Schiefer, Thomas Hamp, Peter Faybik, Gabriela Berlakovich, David M Baron, Walter Plöchl
BACKGROUND: Sevoflurane is a volatile anesthetic commonly used to maintain anesthesia in patients with end-stage liver disease (ESLD) undergoing orthotopic liver transplantation (OLT). Growing evidence suggests that patients with ESLD have decreased anesthetic requirements compared to patients with preserved liver function. The potency of volatile anesthetics is expressed as the minimum alveolar concentration (MAC). In this prospective, blinded study, we compared the MAC of sevoflurane among patients with ESLD undergoing OLT and patients with normal liver function undergoing major abdominal surgery...
July 1, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28675953/utility-of-nociceptive-flexion-reflex-threshold-and-bispectral-index-to-predict-movement-responses-under-propofol-anaesthesia
#6
Axel Jakuscheit, Matthias J Posch, Stefanos Gkaitatzis, Lisa Neumark, Mark Hackbarth, Martin Schneider, Gregor Lichtner, Jan H Baars, Falk von Dincklage
INTRODUCTION: The nociceptive flexion reflex threshold (NFRT) is a promising tool to monitor analgesia during general anaesthesia. Clinical studies have shown that the NFRT allows to predict movement responses to painful stimuli under a combined anaesthetic regime of sedative and opioid agents. Experimental studies indicated that the NFRT is also able to predict such movement responses under an exclusively sedative regime like propofol mono-anaesthesia. Therefore, we performed this study to investigate the ability of the NFRT to predict movement responses to painful stimuli in patients during a clinical propofol mono-anaesthesia...
July 4, 2017: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/28672136/comparison-of-changes-in-respiratory-dynamics-immediately-after-the-start-of-propofol-sedation-with-or-without-midazolam
#7
Ayano Hagiwara, Nobuyuki Matsuura, Tatsuya Ichinohe
PURPOSE: The aim of this study was to compare changes in respiratory dynamics starting immediately after administration of propofol alone or a combination of propofol and midazolam. MATERIALS AND METHODS: Twenty-seven healthy adult volunteers participated in a randomized crossover study of undergoing sedation with propofol alone (P group) or with a combination of propofol and midazolam (PM group). In the P group, continuous infusion of propofol through a target-controlled infusion (TCI) pump was started with the target effect site (ES) concentration set at 1...
June 12, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28657350/bispectral-index-as-a-predictor-of-unsalvageable-traumatic-brain-injury
#8
Saeed Mahmood, Ayman El-Menyar, Amr Shabana, Ismail Mahmood, Mohammad Asim, Husham Abdelrahman, Hassan Al-Thani
PRIMARY OBJECTIVE: We aimed to assess the utility of bispectral index (BIS) monitoring to diagnose brain death (BD) in patients with severe traumatic brain injury (TBI). RESEARCH DESIGN AND METHODS: A prospective observational study was conducted for patients with severe TBI between 2012 and 2014. MAIN OUTCOMES AND RESULTS: This study included 62 patients with a mean age of 32.5 ± 10.5 years. Nine patients had BD on admission with a sustainable BIS value of 0...
June 28, 2017: Brain Injury: [BI]
https://www.readbyqxmd.com/read/28655953/effect-of-nitrous-oxide-on-bispectral-index-values-at-equi-minimum-alveolar-concentrations-of-sevoflurane-and-desflurane
#9
Rajeeb Kumar Mishra, Charu Mahajan, Hemanshu Prabhakar, Indu Kapoor, Parmod Kumar Bithal
BACKGROUND AND AIMS: Bispectral index (BIS) values may be anaesthetic agent-specific, depending on their ability to suppress the electroencephalogram (EEG) signals. We carried out a prospective, randomised clinical trial to study the effect of nitrous oxide (N2O) on the BIS values at an equi-minimum alveolar concentration (MAC) of sevoflurane and desflurane. METHODS: Sixty adult patients undergoing spine surgery were randomised into two groups; Group S (sevoflurane; n = 30) and Group D (desflurane; n = 30) for the maintenance of anaesthesia in oxygen and air or oxygen and N2O mixture (FiO2-0...
June 2017: Indian Journal of Anaesthesia
https://www.readbyqxmd.com/read/28640168/degree-of-postictal-suppression-depends-on-seizure-induction-time-in-magnetic-seizure-therapy-and-electroconvulsive-therapy
#10
Sarah Kayser, Bettina H Bewernick, Martin Soehle, Christina Switala, Sabrina M Gippert, Nadine Dreimueller, Thomas E Schlaepfer
OBJECTIVES: Anesthesia is required for both magnetic seizure therapy (MST) and electroconvulsive therapy (ECT), although it has anticonvulsant properties. In this case, bispectral index (BIS) monitoring, a specific electroencephalogram-derived monitoring, can be used to find the optimal seizure induction time during anesthesia to elicit adequate seizures. A measurement of seizure adequacy in electroencephalogram is the postictal suppression. The purpose of this study was to investigate the influence of seizure induction time on the degree of postictal suppression by comparing BIS versus no-BIS monitoring in MST and ECT...
June 20, 2017: Journal of ECT
https://www.readbyqxmd.com/read/28630395/cerebral-infarction-by-paradoxical-gas-embolism-during-laparoscopic-liver-resection-with-injury-of-the-hepatic-vessels-in-a-patient-without-a-right-to-left-systemic-shunt
#11
Toshiyasu Kawahara, Masahiro Hagiwara, Hiroyuki Takahashi, Mariko Tanaka, Koji Imai, Jun Sawada, Takayuki Kunisawa, Hiroyuki Furukawa
BACKGROUND Carbon dioxide (CO2) is believed to be the safest gas for laparoscopic surgery, which is a standard procedure. We experienced severe cerebral infarction caused by paradoxical CO2 embolism during laparoscopic liver resection with injury of the hepatic vessels despite the absence of a right-to-left systemic shunt. CASE REPORT A 60-year-old man was diagnosed with hepatocellular carcinoma in the right hepatic lobe secondary to alcoholic liver disease. We planned the laparoscopy-assisted liver resection...
June 20, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28623471/the-effect-of-intravenous-lidocaine-infusion-on-bispectral-index-during-major-abdominal-surgery
#12
Patrick Bazin, James Padley, Matthew Ho, Jennifer Stevens, Erez Ben-Menachem
Intraoperative lidocaine infusion has become widely accepted as an adjunct to general anesthesia where its use has been associated with opioid-sparing and enhanced recovery. The aims of this study were to determine whether or not intravenous (IV) lidocaine infusion (a) has an anesthetic sparing effect during major colorectal procedures and (b) if it also affects level of hypnosis as measured by bispectral index (BIS). Twenty-five patients undergoing laparotomy for resection of colorectal tumours were randomized to receive either IV lidocaine (1...
June 16, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28616347/intraoperative-care-for-aortic-surgery-using-circulatory-arrest
#13
REVIEW
Félix Ezequiel Fernández Suárez, David Fernández Del Valle, Adrián González Alvarez, Blanca Pérez-Lozano
The total circulatory arrest (CA) is necessary to achieve optimal surgical conditions in certain aortic pathologies, especially in those affecting the ascending aorta and aortic arch. During this procedure it is necessary to protect all the organs of ischemia, especially those of the central nervous system and for this purpose several strategies have been developed. The first and most important protective method is systemic hypothermia. The degree of hypothermia and the route of application have been evolving and currently tend to use moderate hypothermia (MH) (20...
May 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28614132/the-effect-of-chronic-opioid-use-on-end-tidal-concentration-of-sevoflurane-necessary-to-maintain-a-bispectral-index-below-50-a-prospective-single-blind-study
#14
Tak Kyu Oh, Woosik Eom, Jiyeon Yim, Namwoo Kim, Kyungho Kwon, Seong-Eun Kim, Dae Hyun Kim
BACKGROUND: Opioid analgesics decrease the minimum alveolar concentration of inhalation agents during the acute phase response. However, the effect of chronic opioid exposure on minimum alveolar concentration of inhalation agents remains unknown. This study aimed to determine the concentration of sevoflurane necessary to maintain a bispectral index (BIS) <50 (SEVOBIS50) in patients with chronic opioid use compared with those naïve to opioid use. METHODS: We included chronic opioid users who received a stable dose of oral morphine of at least 60 mg/d according to the morphine equivalent daily dose for at least 4 weeks and opioid-naïve patients...
July 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28611364/association-of-polymorphisms-in-pharmacogenetic-candidate-genes-with-propofol-susceptibility
#15
Qi Zhong, Xiangdong Chen, Yan Zhao, Ru Liu, Shanglong Yao
Significant individual susceptibility to intravenous anesthetic propofol exists. The etiology of individual variability in the response to propofol may be influenced by genetic polymorphisms in metabolic and functional pathways. With current pharmacogenetics and modern molecular biology technologies, it is possible to study the influence of genetic polymorphisms on susceptibility to propofol. When inducing general anesthesia with intravenous propofol, high individual susceptibility to propofol was found. Using Sequenom MassARRAY single-nucleotide polymorphism (SNP) genotyping, we identified a mutation (rs6313) in the 5HT2A gene that was correlated to individual susceptibility to propofol effect-site concentration (Cep) and onset time of propofol induction...
June 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28598913/xenon-as-an-adjuvant-to-propofol-anesthesia-in-patients-undergoing-off-pump-coronary-artery-bypass-graft-surgery-a-pragmatic-randomized-controlled-clinical-trial
#16
Layth Al Tmimi, Sarah Devroe, Geertrui Dewinter, Marc Van de Velde, Gert Poortmans, Bart Meyns, Bart Meuris, Mark Coburn, Steffen Rex
BACKGROUND: Xenon was shown to cause less hemodynamic instability and reduce vasopressor needs during off-pump coronary artery bypass (OPCAB) surgery when compared with conventionally used anesthetics. As xenon exerts its organ protective properties even in subanesthetic concentrations, we hypothesized that in patients undergoing OPCAB surgery, 30% xenon added to general anesthesia with propofol results in superior hemodynamic stability when compared to anesthesia with propofol alone...
June 8, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28591048/effects-of-dexmedetomidine-on-sleep-quality-of-patients-after-surgery-without-mechanical-ventilation-in-icu
#17
Weina Lu, Qinghui Fu, Xiaoqian Luo, Shuiqiao Fu, Kai Hu
Sleep quality of patients in intensive care unit (ICU) has been recently recognized as an important aspect of the intensive care. Dexmedetomidine is one of the most recently introduced for sedation in the ICU. This study was designed to evaluate the effect of dexmedetomidine on sleep quality of patients without mechanical ventilation in ICU.The patients who were included in this study were divided into two groups. In the sedation group, dexmedetomidine was given by a continuous infusion targeting a sedation level -1 to -2 on the score of RASS (Richmond Agitation-Sedation Scale)...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28580079/the-effect-of-triazolam-premedication-on-anxiety-sedation-and-amnesia-in-general-anesthesia
#18
Taehee Pyeon, Shiyoung Chung, Injae Kim, Seongheon Lee, Seongwook Jeong
BACKGROUND: Benzodiazepines have been used preoperatively as part of an anesthesia regimen to attenuate the anxiety of patients. In this study, we aimed to examine the effect of oral triazolam, a short-acting benzodiazepine, on anxiety, sedation, and amnesia. METHODS: Ninety patients, aged 20-55 years, were randomly assigned to receive no premedication, or to receive triazolam 0.25 mg or 0.375 mg 1 h before anesthesia. Anxiety score, sedation score, blood pressure, heart rate and psychomotor performance were measured on the evening before surgery and on the day of surgery...
June 2017: Korean Journal of Anesthesiology
https://www.readbyqxmd.com/read/28575344/raw-eeg-characteristics-bispectral-index-and-suppression-ratio-variations-during-generalized-seizure-in-electroconvulsive-therapy
#19
A Ntahe, G Fournis, B Gohier, L Beydon
No abstract text is available yet for this article.
June 1, 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/28551058/-anesthesia-recovery-comparison-between-remifentanil-propofol-and-remifentanil-desflurane-guided-by-bispectral-index-%C3%A2-monitoring
#20
Raphael Grossi Rocha, Eduardo Giarola Almeida, Lara Moreira Mendes Carneiro, Natália Farias de Almeida, Walkíria Wingester Vilas Boas, Renato Santiago Gomez
BACKGROUND AND OBJECTIVES: There is a strong demand for fast and predictable anesthesia recovery with few side effects. Choice of the hypnotic agent could impact on that. This study investigated the differences between recoveries after remifentanil-propofol and remifentanil-desflurane anesthesias guided by bispectral index (BIS(®)). METHODS: Forty patients were randomly assigned into 2 groups according to the anesthesia technique applied: remifentanil-propofol (REM-PRO) and remifentanil-desflurane (REM-DES)...
May 25, 2017: Revista Brasileira de Anestesiologia
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