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Brain injury sedation

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https://www.readbyqxmd.com/read/28065636/neuroprotection-and-neurotoxicity-in-the-developing-brain-an-update-on-the-effects-of-dexmedetomidine-and-xenon
#1
Azeem Alam, Ka Chun Suen, Zac Hana, Robert D Sanders, Mervyn Maze, Daqing Ma
Growing and consistent preclinical evidence, combined with early clinical epidemiological observations, suggest potentially neurotoxic effects of commonly used anesthetic agents in the developing brain. This has prompted the FDA to issue a safety warning for all sedatives and anesthetics approved for use in children under three years of age. Recent studies have identified dexmedetomidine, the potent α2-adrenoceptor agonist, and xenon, the noble gas, as effective anesthetic adjuvants that are both less neurotoxic to the developing brain, and also possess neuroprotective properties in neonatal and other settings of acute ongoing neurologic injury...
January 5, 2017: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/28032265/using-continuous-quantitative-capnography-for-emergency-department-procedural-sedation-a-systematic-review-and-cost-effectiveness-analysis
#2
Nicholas Matthew Mohr, Andrew Stoltze, Azeemuddin Ahmed, Elizabeth Kiscaden, Dan Shane
End-tidal CO2 has been advocated to improve safety of emergency department (ED) procedural sedation by decreasing hypoxia and catastrophic outcomes. This study aimed to estimate the cost-effectiveness of routine use of continuous waveform quantitative end-tidal CO2 monitoring for ED procedural sedation in prevention of catastrophic events. Markov modeling was used to perform cost-effectiveness analysis to estimate societal costs per prevented catastrophic event (death or hypoxic brain injury) during routine ED procedural sedation...
December 28, 2016: Internal and Emergency Medicine
https://www.readbyqxmd.com/read/28000133/association-of-early-hemodynamic-profile-and-the-development-of-systolic-dysfunction-following-traumatic-brain-injury
#3
Vijay Krishnamoorthy, Ali Rowhani-Rahbar, Nophanan Chaikittisilpa, Edward F Gibbons, Frederick P Rivara, Nancy R Temkin, Alex Quistberg, Monica S Vavilala
BACKGROUND: While systolic dysfunction has been observed following traumatic brain injury (TBI), the relationship between early hemodynamics and the development of systolic dysfunction has not been investigated. Our study aimed to determine the early hemodynamic profile that is associated with the development of systolic dysfunction after TBI. METHODS: We conducted a prospective cohort study among patients under 65 years old without cardiac comorbidities who sustained moderate-severe TBI...
December 20, 2016: Neurocritical Care
https://www.readbyqxmd.com/read/27987330/protection-of-dexmedetomidine-against-ischemia-reperfusion-induced-apoptotic-insults-to-neuronal-cells-occurs-via-an-intrinsic-mitochondria-dependent-pathway
#4
Gong-Jhe Wu, Jui-Tai Chen, Hsiao-Chien Tsai, Ta-Liang Chen, Shing-Hwa Liu, Ruei-Ming Chen
Dexmedetomidine, an agonist of alpha2-adrenergic receptors, is used for critically ill patients to induce and maintain sedation and analgesia. Brain ischemia/reperfusion (I/R) usually causes severe neuronal injuries to intensive care unit patients. This study was aimed to evaluate the effects of dexmedetomidine on I/R-induced insults to neuronal cells and the possible mechanisms. Treatment of neuro-2a cells with dexmedetomidine did not affect cell viability but could protect against I/R-induced cell death. Separately, the I/R-triggered cell shrinkage, DNA fragmentation, and apoptosis in neuro-2a cells were alleviated by dexmedetomidine...
December 17, 2016: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/27941576/sedation-of-patients-with-disorders-of-consciousness-during-neuroimaging-effects-on-resting-state-functional-brain-connectivity
#5
Muriëlle Kirsch, Pieter Guldenmund, Mohamed Ali Bahri, Athena Demertzi, Katherine Baquero, Lizette Heine, Vanessa Charland-Verville, Audrey Vanhaudenhuyse, Marie-Aurélie Bruno, Olivia Gosseries, Carol Di Perri, Erik Ziegler, Jean-François Brichant, Andrea Soddu, Vincent Bonhomme, Steven Laureys
BACKGROUND: To reduce head movement during resting state functional magnetic resonance imaging, post-coma patients with disorders of consciousness (DOC) are frequently sedated with propofol. However, little is known about the effects of this sedation on the brain connectivity patterns in the damaged brain essential for differential diagnosis. In this study, we aimed to assess these effects. METHODS: Using resting state functional magnetic resonance imaging 3T data obtained over several years of scanning patients for diagnostic and research purposes, we employed a seed-based approach to examine resting state connectivity in higher-order (default mode, bilateral external control, and salience) and lower-order (auditory, sensorimotor, and visual) resting state networks and connectivity with the thalamus, in 20 healthy unsedated controls, 8 unsedated patients with DOC, and 8 patients with DOC sedated with propofol...
February 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/27903013/isoflurane-associated-mydriasis-mimicking-blown-pupils-in-a-patient-treated-in-a-neurointensive-care-unit
#6
Eva Magdalena Korf, Volker Martin Tronnier, Jan Gliemroth, Jan Nils Küchler
We report a misinterpretation of bilateral mydriasis as blown pupils related to elevated intracranial pressure (ICP) under volatile sedation with isoflurane (Anesthetic Conserving Device [AnaConDa], Hudson RCI, Uppland Vasby, Sweden) in a 59-year-old patient with a severe traumatic brain injury with frontal contusion. The patient showed bilateral mydriasis and a missing light reflex 8 hours after changing sedation from intravenous treatment with midazolam and esketamine to volatile administration of isoflurane...
November 30, 2016: Journal of Neurological Surgery. Part A, Central European Neurosurgery
https://www.readbyqxmd.com/read/27902596/portable-disposable-ultrathin-endoscopy-tested-through-percutaneous-endoscopic-gastrostomy
#7
Myong Ki Baeg, Chul-Hyun Lim, Jin Su Kim, Yu Kyung Cho, Jae Myung Park, Bo-In Lee, In-Seok Lee, Myung-Gyu Choi
BACKGROUND: A portable disposable ultrathin endoscope (DUE) with high visual quality and maneuverability would reduce the need for expensive facilities and emergency endoscopy could be available anywhere. It would increase patient satisfaction, prevent unnecessary sedation, and reduce infection. Our aim was to evaluate the usefulness of portable DUE in performing percutaneous endoscopic gastrostomy (PEG). METHODS: We prospectively enrolled patients who underwent PEG under DUE guidance and compared them with historical controls who underwent PEG under conventional ultrathin endoscopy (CUE) guidance...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27878815/interventions-to-reduce-cognitive-impairments-following-critical-illness-a-topical-systematic-review
#8
REVIEW
H K Nedergaard, H I Jensen, P Toft
BACKGROUND: Critical illness is associated with cognitive impairments. Effective treatment or prevention has not been established. The aim of this review was to create a systematic summary of the current evidence concerning clinical interventions during intensive care admission to reduce cognitive impairments after discharge. METHODS: Medline, Embase, Cochrane Central, PsycInfo and Cinahl were searched. Inclusion criteria were studies assessing the effect of interventions during intensive care admission on cognitive function in adult patients...
November 22, 2016: Acta Anaesthesiologica Scandinavica
https://www.readbyqxmd.com/read/27871507/use-of-gabaergic-sedatives-after-subarachnoid-hemorrhage-is-associated-with-worse-outcome-preliminary-findings
#9
Daniel N Hertle, Christopher Beynon, Jan O Neumann, Edgar Santos, Renan Sánchez-Porras, Andreas W Unterberg, Oliver W Sakowitz
STUDY OBJECTIVE: Recent experimental evidence identified GABAergic sedation as a possible cause for deprived neuroregeneration and poor outcome after acute brain injury. Patients with aneurysmal subarachnoid hemorrhage are often sedated, and GABAergic sedation, such as midazolam and propofol, is commonly used. DESIGN: Retrospective cohort study based on a prospectively established database. SETTING: Single-center neurointensive care unit. PATIENTS: Twenty-nine patients after subarachnoid hemorrhage...
December 2016: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/27856146/early-neurological-wake-up-test-in-intubated-brain-injured-patients-a-long-term-single-centre-experience
#10
Pierre Esnault, Ambroise Montcriol, Erwan D'Aranda, Julien Bordes, Philippe Goutorbe, Henry Boret, Eric Meaudre
BACKGROUND: In prehospital setting, a severe traumatic brain injury (TBI) requires tracheal intubation, sedation and mechanical ventilation pending the initial imagery. An early neurological wake-up test (ENWT), soon after the initial imaging assessment, allows a rapid neurological reassessment. This strategy authorises an initial clinical examination of reference with which will be compared the later examinations. The main objective of this study was to describe the characteristics of the patients who underwent an ENWT, and to determine its causes of failure...
November 14, 2016: Australian Critical Care: Official Journal of the Confederation of Australian Critical Care Nurses
https://www.readbyqxmd.com/read/27852713/effects-of-increased-positive-end-expiratory-pressure-on-intracranial-pressure-in-acute-respiratory-distress-syndrome-a-protocol-of-a-prospective-physiological-study
#11
Han Chen, Ming Xu, Yan-Lin Yang, Kai Chen, Jing-Qing Xu, Ying-Rui Zhang, Rong-Guo Yu, Jian-Xin Zhou
INTRODUCTION: There are concerns that the use of positive end-expiratory pressure (PEEP) in patients with brain injury may potentially elevate intracranial pressure (ICP). However, the transmission of PEEP into the thoracic cavity depends on the properties of the lungs and the chest wall. When chest wall elastance is high, PEEP can significantly increase pleural pressure. In the present study, we investigate the different effects of PEEP on the pleural pressure and ICP in different respiratory mechanics...
November 15, 2016: BMJ Open
https://www.readbyqxmd.com/read/27798266/focally-perfused-succinate-potentiates-brain-metabolism-in-head-injury-patients
#12
Ibrahim Jalloh, Adel Helmy, Duncan J Howe, Richard J Shannon, Peter Grice, Andrew Mason, Clare N Gallagher, Matthew G Stovell, Susan van der Heide, Michael P Murphy, John D Pickard, David K Menon, T Adrian Carpenter, Peter J Hutchinson, Keri Lh Carpenter
Following traumatic brain injury, complex cerebral energy perturbations occur. Correlating with unfavourable outcome, high brain extracellular lactate/pyruvate ratio suggests hypoxic metabolism and/or mitochondrial dysfunction. We investigated whether focal administration of succinate, a tricarboxylic acid cycle intermediate interacting directly with the mitochondrial electron transport chain, could improve cerebral metabolism. Microdialysis perfused disodium 2,3-(13)C2 succinate (12 mmol/L) for 24 h into nine sedated traumatic brain injury patients' brains, with simultaneous microdialysate collection for ISCUS analysis of energy metabolism biomarkers (nine patients) and nuclear magnetic resonance of (13)C-labelled metabolites (six patients)...
October 17, 2016: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/27755068/clinical-practice-guidelines-for-sustained-neuromuscular-blockade-in-the-adult-critically-ill-patient
#13
Michael J Murray, Heidi DeBlock, Brian Erstad, Anthony Gray, Judi Jacobi, Che Jordan, William McGee, Claire McManus, Maureen Meade, Sean Nix, Andrew Patterson, M Karen Sands, Richard Pino, Ann Tescher, Richard Arbour, Bram Rochwerg, Catherine Friederich Murray, Sangeeta Mehta
OBJECTIVE: To update the 2002 version of "Clinical practice guidelines for sustained neuromuscular blockade in the adult critically ill patient." DESIGN: A Task Force comprising 17 members of the Society of Critical Medicine with particular expertise in the use of neuromuscular-blocking agents; a Grading of Recommendations Assessment, Development, and Evaluation expert; and a medical writer met via teleconference and three face-to-face meetings and communicated via e-mail to examine the evidence and develop these practice guidelines...
November 2016: Critical Care Medicine
https://www.readbyqxmd.com/read/27677720/adolescent-alcohol-exposure-persistently-impacts-adult-neurobiology-and-behavior
#14
Fulton T Crews, Ryan P Vetreno, Margaret A Broadwater, Donita L Robinson
Adolescence is a developmental period when physical and cognitive abilities are optimized, when social skills are consolidated, and when sexuality, adolescent behaviors, and frontal cortical functions mature to adult levels. Adolescents also have unique responses to alcohol compared with adults, being less sensitive to ethanol sedative-motor responses that most likely contribute to binge drinking and blackouts. Population studies find that an early age of drinking onset correlates with increased lifetime risks for the development of alcohol dependence, violence, and injuries...
October 2016: Pharmacological Reviews
https://www.readbyqxmd.com/read/27676778/functional-outcome-of-brain-injury-victims-having-rehabilitation-care-in-tunis
#15
Mariem Rekik, Emna Bahlouli, Bessem Krifa, Sonia Lebib, Imen Miri, Fatima Zahra Ben Salah, Catherine Dziri
OBJECTIVE: The aim of our study was to assess the functional outcome of brain injury (BI) victims and to review the impact of treatment time on functional abilities. MATERIAL/PATIENTS AND METHODS: We conducted a cross-sectional study including patients referred to physical and rehabilitation medicine department at the Med Kassab Institute of Orthopedics. The initial gravity data were collected. The functional outcome was assessed by the Glasgow Outcome Scale (GOS) French version, the get up and go test, the walk test on 10m, the functional independence measure (FIM) and daily life activities...
September 2016: Annals of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/27567923/prehospital-intubation-for-isolated-severe-blunt-traumatic-brain-injury-worse-outcomes-and-higher-mortality
#16
Tobias Haltmeier, Elizabeth Benjamin, Stefano Siboni, Evren Dilektasli, Kenji Inaba, Demetrios Demetriades
PURPOSE: Prehospital endotracheal intubation (ETI) for traumatic brain injury (TBI) is a controversial issue. The aim of this study was to investigate the effect of prehospital ETI in patients with TBI. METHODS: Cohort-matched study using the US National Trauma Data Bank (NTDB) 2008-2012. Patients with isolated severe blunt TBI (AIS head ≥3, AIS chest/abdomen <3) and a field GCS ≤8 were extracted from NTDB. A 1:1 matching of patients with and without prehospital ETI was performed...
August 27, 2016: European Journal of Trauma and Emergency Surgery: Official Publication of the European Trauma Society
https://www.readbyqxmd.com/read/27554945/continuous-eeg-monitoring-enhances-multimodal-outcome-prediction-in-hypoxic-ischemic-brain-injury
#17
Edilberto Amorim, Jon C Rittenberger, Julia J Zheng, M Brandon Westover, Maria E Baldwin, Clifton W Callaway, Alexandra Popescu
OBJECTIVE: Hypoxic brain injury is the largest contributor to disability and mortality after cardiac arrest. We aim to identify electroencephalogram (EEG) characteristics that can predict outcome on cardiac arrest patients treated with targeted temperature management (TTM). METHODS: We retrospectively examined clinical, EEG, functional outcome at discharge, and in-hospital mortality for 373 adult subjects with return of spontaneous circulation after cardiac arrest...
December 2016: Resuscitation
https://www.readbyqxmd.com/read/27499408/pan-computed-tomography-for-blunt-polytrauma-are-we-doing-too-many
#18
G V Oosthuizen, J L Bruce, W Bekker, N Shangase, G L Laing, D L Clarke
BACKGROUND: Pan computed tomography (CT) is widely used in the evaluation of patients with blunt polytrauma, but there is growing concern about the radiation risks imposed. OBJECTIVE: To ascertain whether we were possibly overutilising pan CT in our trauma service, and whether we could safely cut down on scans without missing significant injuries. METHODS: We audited all pan scans performed in the Metropolitan Trauma Service, Pietermaritzburg, South Africa, during the 12-month period 1 January - 31 December 2012...
August 2016: South African Medical Journal, Suid-Afrikaanse Tydskrif Vir Geneeskunde
https://www.readbyqxmd.com/read/27475676/evaluation-of-neuroprotective-anticonvulsant-sedative-and-anxiolytic-activity-of-citicoline-in-rats
#19
Arash Abdolmaleki, Ali Moghimi, Mohammad B Ghayour, Morteza B Rassouli
Citicoline (cytidine-5'-diphosphocholine) is a neuroprotective agent that is administered following ischemic and traumatic brain injuries. There is little information about the antiseizure and anxiolytic effects of citicoline, which are therefore addressed in the present study. For evaluating the anticonvulsant effect of citicoline in the pentylentetrazole seizure model, a single intraperitoneal dose of citicoline was administered at 50, 100 or 150mg/kg. Sedative and anxiolytic effects of citicoline were examined via elevated plus maze and pentobarbital induced sleep tests...
October 15, 2016: European Journal of Pharmacology
https://www.readbyqxmd.com/read/27472071/bedside-quantitative-electroencephalography-improves-assessment-of-consciousness-in-comatose-subarachnoid-hemorrhage-patients
#20
Jan Claassen, Angela Velazquez, Emma Meyers, Jens Witsch, M Cristina Falo, Soojin Park, Sachin Agarwal, J Michael Schmidt, Nicholas D Schiff, Jacobo D Sitt, Lionel Naccache, E Sander Connolly, Hans-Peter Frey
OBJECTIVE: Accurate behavioral assessments of consciousness carry tremendous significance in guiding management, but are extremely challenging in acutely brain-injured patients. We evaluated whether electroencephalography (EEG) and multimodality monitoring parameters may facilitate assessment of consciousness in patients with subarachnoid hemorrhage. METHODS: A retrospective analysis was performed of 83 consecutively treated adults with subarachnoid hemorrhage. All patients were initially comatose and had invasive brain monitoring placed...
October 2016: Annals of Neurology
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