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Bispectral index

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https://www.readbyqxmd.com/read/28435334/bispectral-index-value-correlates-with-glasgow-coma-scale-in-traumatic-brain-injury-patients
#1
Tjokorda Gde Agung Senapathi, Made Wiryana, I Gusti Ngurah Mahaalit Aribawa, Christopher Ryalino
BACKGROUND: Accuracy of consciousness level assessment is very important. It may determine and influence further clinical decisions, thus influences patients' outcomes. The widest method in determining the level of awareness is the Glasgow Coma Scale (GCS). Despite its common use, GCS scores obtained by one clinician may differ from others depending on their interpretations and past experience. One of the tools used to assess the level of consciousness objectively is bispectral index (BIS)...
2017: Open Access Emergency Medicine: OAEM
https://www.readbyqxmd.com/read/28422877/suxamethonium-induces-a-prompt-increase-in-the-bispectral-index
#2
Jong Bum Choi, Se Hee Na, Sook Young Lee, Jong Yeop Kim, Sung Yong Park, Ji Eun Kim, Seungbae Hong, Jiwon An, Chung Hoon Park, Yong Chan Kim, Woo Young Park
Upon inducting general anesthesia in the operating room, we have observed a prompt increase in the bispectral index (BIS) after the intravenous injection of suxamethonium. We hypothesized that the cause of this BIS increase is muscle hyperactivity owing to fasciculation. However, no reports have been published regarding this abrupt increase in the BIS upon the induction of general anesthesia by suxamethonium. To investigate the degree of change in the BIS in patients receiving anesthesia with suxamethonium, we performed a prospective observational study of 63 participants who underwent closed reduction for nasal bone fracture...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28391200/quasi-periodicities-detection-using-phase-rectified-signal-averaging-in-eeg-signals-as-a-depth-of-anesthesia-monitor
#3
Quan Liu, Yi-Feng Chen, Shou-Zen Fan, Maysam Abbod, Jiann-Shing Shieh
Phase-rectified signal averaging (PRSA) has been known to be a useful method to detect periodicities in non-stationary biological signals. Determination of quasi-periodicities in electroencephalogram (EEG) is a candidate for quantifying the changes of depth of anesthesia (DOA). In this paper, DOA monitoring capacity of periodicities detected using PRSA was quantified by assessing EEG signals collected from 56 patients during surgery. The method is compared to sample entropy (SampEn), detrended fluctuation analysis (DFA) and permutation entropy (PE)...
April 3, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/28383293/peripheral-nerve-block-as-a-supplement-to-light-or-deep-general-anesthesia-in-elderly-patients-receiving-total-hip-arthroplasty-a-prospective-randomized-study
#4
Bin Mei, Hanning Zha, Xiaolong Lu, Xinqi Cheng, Shishou Cheng, Xuesheng Liu, Yuanhai Li, Erwei Gu
BACKGROUND: Peripheral nerve block combined with general anesthesia is a preferable anesthesia method for elderly patients receiving hip arthroplasty. The depth of sedation may influence patient recovery. Therefore, we aimed to investigate the influence of peripheral nerve blockade and different intraoperative sedation levels on the short-term recovery of elderly patients receiving total hip arthroplasty. METHODS: Patients aged 65 years and older undergoing total hip arthroplasty were randomized into three groups: a general anesthesia without lumbosacral plexus block group, and two general anesthesia plus lumbosacral plexus block groups, each with a different level of sedation (light or deep)...
April 5, 2017: Clinical Journal of Pain
https://www.readbyqxmd.com/read/28378573/bispectral-index-guided-sedation-in-transfemoral-transcatheter-aortic-valve-implantation-a-retrospective-control-study
#5
Wei He, Rong-Rong Huang, Qing-Yu Shi, Xian-Bao Liu, Jian-An Wang, Min Yan
OBJECTIVE: Transcatheter aortic valve implantation (TAVI) is a minimally invasive therapy for elderly patients with severe aortic valve stenosis who were refused surgical aortic valve replacement because of the high perioperative risk. Traditionally, this procedure has been done under general anesthesia, but more recently local anesthesia and sedation have become popular. This research assessed the effectiveness of transfemoral TAVI under bispectral index (BIS)-guided sedation. METHODS: In this single-center retrospective control analysis, clinical data, including demographic characteristics, echocardiography, periprocedural data, and main complications, were collected and assessed in 113 patients undergoing TAVI through the femoral artery under general anesthesia (GA group, n=36) and under BIS-guided sedation (SED group, n=77)...
2017: Journal of Zhejiang University. Science. B
https://www.readbyqxmd.com/read/28362426/bispectral-index-monitoring-in-vitrectomy-surgery-under-local-anaesthetic-block-with-sedation-a-single-surgeon-single-anaesthetist-review
#6
A J Porter, L Lee, C Bradshaw
No abstract text is available yet for this article.
March 31, 2017: Eye
https://www.readbyqxmd.com/read/28361391/relation-between-bispectral-index-measurements-of-anesthetic-depth-and-postoperative-mortality-a-meta-analysis-of-observational-studies
#7
Andres Zorrilla-Vaca, Ryan J Healy, Christopher L Wu, Michael C Grant
INTRODUCTION: The association between anesthesia depth and mortality is still controversial. There are a number of narrative reviews on this topic that affirm this association, but their conclusions were based only on qualitative analyses. The aim of this meta-analysis of observational studies was to examine the potential association between depth of anesthesia as a low bispectral index (BIS) and mortality using appropriate quantitative methods. METHODS: The literature was systematically reviewed in three main electronic databases (MEDLINE, EMBASE, Google Scholar) to identify all articles from inception through December 2015 regarding the association between depth of anesthesia and mortality...
March 30, 2017: Canadian Journal of Anaesthesia, Journal Canadien D'anesthésie
https://www.readbyqxmd.com/read/28356690/sedation-in-oral-and-maxillofacial-day-care-surgery-a-comparative-study-between-intravenous-dexmedetomidine-and-midazolam
#8
Niranjan Mishra, Krishna Gopal Birmiwal, Nibedita Pani, Subhrajit Raut, Gaurav Sharma, Krushna Chandra Rath
INTRODUCTION: Sedation is an important component of day care oral and maxillofacial surgical procedures under local anesthesia. Although various sedative drugs in different regimens have been used for sedation, an ideal agent and regimen are yet to be established. AIM: The aim of this study is to compare the efficacy of intravenous (IV) dexmedetomidine and midazolam as a sedative agent for day care oral and maxillofacial surgical procedures. SETTINGS: The study was conducted in the Department of Oral and Maxillofacial Surgery, SCB Dental College and Hospital, Cuttack, Odisha, India...
July 2016: National Journal of Maxillofacial Surgery
https://www.readbyqxmd.com/read/28355756/-effect-of-intravenous-infusion-with-lidocaine-on-rapid-recovery-of-laparoscopic-cholecystectomy
#9
X Z Chen, Q B Lou, C C Sun, W S Zhu, J Li
Objective: To investigate the effect of intravenous infusion with lidocaine on rapid recovery of laparoscopic cholecystectomy. Methods: This study was a prospective randomized controlled trial. From February to August 2016 in Affiliated Yiwu Hospital of Wenzhou Medical University, 60 patients scheduled for laparoscopic cholecystectomy under general anesthesia were involved and randomly divided into control group (n=30) and lidocaine group (n=30). Patients in lidocaine group received lidocaine 1.5 mg/kg intravenously before induction and followed by 2...
March 28, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28347549/idiopathic-decreased-bispectral-index-during-anaesthesia-emergence-possible-causes-for-the-phenomenon-of-paradoxical-arousal
#10
J Zaldibar-Gerrikagoitia Bilbao, J González García, O Romero Menchaca, A Bernas Albeniz, L Aguilera Celorrio
In a small percentage of patients, sound, touch and even nociceptive stimulation in the presence of a light anaesthetic depth does not cause an electroencephalogram wave pattern of cortical activation (α, β waves) as would be expected, but leads to a slowed electroencephalogram pattern instead. We report the case of a patient who on emerging from anaesthesia showed very slowed brain activity on the electroencephalogram and reduced algorithmic value, that lasted approximately 5min coinciding with sound and tactile stimulation...
March 24, 2017: Revista Española de Anestesiología y Reanimación
https://www.readbyqxmd.com/read/28315727/increasing-or-fluctuating-bispectral-index-values-during-post-resuscitation-targeted-temperature-management-can-predict-clinical-seizures-after-rewarming
#11
Kanae Ochiai, Atsushi Shiraishi, Yasuhiro Otomo, Yuuichi Koido, Takashi Kanemura, Masato Honma
AIM: To investigate whether an increasing bispectral index (BIS) value during targeted temperature management (TTM) correlates with increased clinical seizures after TTM or worse neurological prognoses after TTM. METHODS: We performed a retrospective prognostication study of patients who were treated with TTM after recovery of spontaneous circulation from cardiac arrest at a tertiary care hospital. We recorded the BIS regularly during TTM and calculated the correlations of the mean BIS values, standard deviations of the BIS values, and linear regression coefficient of the trend of the BIS values over time as index tests...
March 16, 2017: Resuscitation
https://www.readbyqxmd.com/read/28298244/frailty-related-to-anesthesia-guided-by-the-index-bispectral-frail-study-study-protocol-for-a-randomized-controlled-trial
#12
Morgan Le Guen, Marie Herr, Antoine Bizard, Caroline Bichon, Nathalie Boichut, Thierry Chazot, Ngai Liu, Joel Ankri, Marc Fischler
BACKGROUND: Currently, patients older than 60 years of age represent 25% of the population and are at an increased risk during surgery. Therefore, reducing postoperative morbidity and mortality is a major concern in medical research and practice. Dependence on caregivers and cognitive impairment represent two major risk factors in the elderly, especially in frail patients after surgery under general anesthesia. In this context, continuous monitoring of the depth of anesthesia using a bispectral index (BIS) sensor may reduce the occurrence of impairments by gaining better control of the anesthetic depth...
March 16, 2017: Trials
https://www.readbyqxmd.com/read/28283250/feasibility-of-anesthesia-maintenance-with-sevoflurane-during-cardiopulmonary-bypass-a-pilot-pharmacokinetics-study
#13
Roberta Meroni, Stefano Gianni, Marcello Guarnieri, Francesco Saglietti, Marco Gemma, Alberto Zangrillo, Elena Bignami
OBJECTIVE: Adequate maintenance of hypnosis during anesthesia throughout surgery using sevoflurane alone was investigated. In addition, sevoflurane pharmacokinetics during cardiopulmonary bypass were analyzed. DESIGN: This was a pilot pharmacokinetic study. SETTING: Tertiary care university hospital. PARTICIPANTS: The study comprised 10 patients aged between 18 and 75 years who underwent elective mitral valve surgery...
December 18, 2016: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/28272202/effects-of-combined-epidural-and-general-anesthesia-on-intraoperative-hemodynamic-responses-postoperative-cellular-immunity-and-prognosis-in-patients-with-gallbladder-cancer-a-randomized-controlled-trial
#14
RANDOMIZED CONTROLLED TRIAL
Jun Zhu, Xue-Rong Zhang, Hu Yang
BACKGROUND: This study is supposed to investigate the effects of combined epidural and general anesthesia on intraoperative hemodynamic responses, postoperative cellular immunity, and prognosis in patients with gallbladder cancer (GBC). METHODS: One hundred forty-four GBC patients were selected and randomly divided into the general anesthesia (GA) group and the combined epidural-general anesthesia (CEGA) group. Before anesthesia induction (t0), at intubation (t1), at the beginning of surgery (t2), 5 minutes after pneumoperitoneum (t3), at the end of surgery (t4), after recovery of spontaneous breathing (t5), after regaining consciousness (t6), and after extubation (t7), the heart rate (HR), systolic blood pressure (SBP), diastolic blood pressure (DBP), and the depth of anesthesia (bispectral index [BIS]) were detected...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28269717/assessment-of-sedation-analgesia-by-means-of-poincare%C3%AC-analysis-of-the-electroencephalogram
#15
Jose D Bolanos, Montserrat Vallverdu, Pere Caminal, Daniel F Valencia, Xavi Borrat, Pedro L Gambus, Jose F Valencia
Monitoring the levels of sedation-analgesia may be helpful for managing patient stress on minimally invasive medical procedures. Monitors based on EEG analysis and designed to assess general anesthesia cannot distinguish reliably between a light and deep sedation. In this work, the Poincaré plot is used as a nonlinear technique applied to EEG signals in order to characterize the levels of sedation-analgesia, according to observed categorical responses that were evaluated by means of Ramsay Sedation Scale (RSS)...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28243855/optimal-propofol-induction-dose-in-morbidly-obese-patients-a-randomized-controlled-trial-comparing-the-bispectral-index-and-lean-body-weight-scalar
#16
Yamini Subramani, Waleed Riad, Frances Chung, Jean Wong
PURPOSE: Propofol dosing based on total body weight (TBW) can lead to overdosing in morbidly obese (MO) patients. Our aim was to determine whether an induction dose of propofol based on a bispectral index (BIS) target is better for achieving loss of consciousness in MO patients than dosing based on lean body weight (LBW). METHODS: Sixty MO patients with a body mass index (BMI) of ≥ 40 kg·m(-2) were randomized to either BIS- or LBW-based propofol dosing groups...
February 27, 2017: Canadian Journal of Anaesthesia, Journal Canadien D'anesthésie
https://www.readbyqxmd.com/read/28236863/postoperative-surveillance-in-neurosurgical-patients-usefulness-of-neurological-assessment-scores-and-bispectral-index
#17
Silvia Herrero, Enrique Carrero, Ricard Valero, Jose Rios, Neus Fábregas
BACKGROUND AND OBJECTIVES: We examined the additive effect of the Ramsay scale, Canadian Neurological Scale (CNS), Nursing Delirium Screening Scale (Nu-DESC), and Bispectral Index (BIS) to see whether along with the assessment of pupils and Glasgow Coma Scale (GCS) it improved early detection of postoperative neurological complications. METHODS: We designed a prospective observational study of two elective neurosurgery groups of patients: craniotomies (CG) and non-craniotomies (NCG)...
March 2017: Brazilian Journal of Anesthesiology
https://www.readbyqxmd.com/read/28236859/regulation-of-hypnosis-in-propofol-anesthesia-administration-based-on-non-linear-control-strategy
#18
Muhammad Ilyas, Ali Khaqan, Jamshed Iqbal, Raja Ali Riaz
Continuous adjustment of Propofol in manual delivery of anesthesia for conducting a surgical procedure overburdens the workload of an anesthetist who is working in a multi-tasking scenario. Going beyond manual administration and Target Controlled Infusion, closed-loop control of Propofol infusion has the potential to offer several benefits in terms of handling perturbations and reducing the effect of inter-patient variability. This paper proposes a closed-loop automated drug administration approach to control Depth Of Hypnosis in anesthesia...
March 2017: Brazilian Journal of Anesthesiology
https://www.readbyqxmd.com/read/28235530/intraoperative-aberrant-bispectral-index-values-due-to-facial-nerve-monitoring
#19
Dhritiman Chakrabarti, Rohini Mrugank Surve, Deepti Bs, Dheeraj Masapu
Bispectral index is an accepted depth of anaesthesia monitor for guiding intraoperative hypnotic agent administration. Frontalis EMG displayed on BIS monitor may increase due to twitching of frontalis muscle. EMG increases are also known to cause artefactual increases in BIS values. We report a case of artefactual increase of EMG and subsequently BIS values, due to electrical artefact from cranial nerve stimulator being used to identify the facial nerve. An explanation of the effect of stimulator signal on BIS EMG and BIS values has been provided...
February 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/28227981/assessment-of-sedation-analgesia-by-means-of-poincare%C3%AC-analysis-of-the-electroencephalogram
#20
Jose D Bolanos, Montserrat Vallverdu, Pere Caminal, Daniel F Valencia, Xavi Borrat, Pedro L Gambus, Jose F Valencia, Jose D Bolanos, Montserrat Vallverdu, Pere Caminal, Daniel F Valencia, Xavi Borrat, Pedro L Gambus, Jose F Valencia, Jose D Bolanos, Xavi Borrat, Jose F Valencia, Montserrat Vallverdu, Pere Caminal, Pedro L Gambus, Daniel F Valencia
Monitoring the levels of sedation-analgesia may be helpful for managing patient stress on minimally invasive medical procedures. Monitors based on EEG analysis and designed to assess general anesthesia cannot distinguish reliably between a light and deep sedation. In this work, the Poincaré plot is used as a nonlinear technique applied to EEG signals in order to characterize the levels of sedation-analgesia, according to observed categorical responses that were evaluated by means of Ramsay Sedation Scale (RSS)...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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