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Cognition and anesthesia

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https://www.readbyqxmd.com/read/27922569/mode-of-information-delivery-does-not-effect-anesthesia-trainee-performance-during-simulated-perioperative-pediatric-critical-events-a-trial-of-paper-versus-electronic-cognitive-aids
#1
Scott C Watkins, Shilo Anders, Anna Clebone, Elisabeth Hughes, Vikram Patel, Laura Zeigler, Yaping Shi, Matthew S Shotwell, Matthew D McEvoy, Matthew B Weinger
INTRODUCTION: Cognitive aids (CAs), including emergency manuals and checklists, have been recommended as a means to address the failure of healthcare providers to adhere to evidence-based standards of treatment during crisis situations. Unfortunately, users of CAs still commit errors, omit critical steps, fail to achieve perfect adherence to guidelines, and frequently choose to not use CA during both simulated and real crisis events. We sought to evaluate whether the mode in which a CA presents information (ie, paper vs...
December 2016: Simulation in Healthcare: Journal of the Society for Simulation in Healthcare
https://www.readbyqxmd.com/read/27919700/exposure-to-sevoflurane-anesthesia-during-development-does-not-impair-aspects-of-attention-during-adulthood-in-rats
#2
Kathy L Murphy, Jill McGaughy, Paula L Croxson, Mark G Baxter
Exposure to general anesthetic agents during development has been associated with neurotoxicity and long-term behavioral impairments in rodents and non-human primates. The phenotype of anesthetic-induced cognitive impairment has a robust learning and memory component, however less is known about other psychological domains. Data from retrospective human patient studies suggest that children undergoing multiple procedures requiring general anesthesia are at increased risk of attention deficit hyperactivity disorder...
December 2, 2016: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/27916664/experience-dependent-modulation-of-right-anterior-insula-and-sensorimotor-regions-as-a-function-of-noise-masked-auditory-feedback-in-singers-and-nonsingers
#3
Boris Kleber, Anders Friberg, Anthony Zeitouni, Robert Zatorre
Previous studies on vocal motor production in singing suggest that the right anterior insula (AI) plays a role in experience-dependent modulation of feedback integration. Specifically, when somatosensory input was reduced via anesthesia of the vocal fold mucosa, right AI activity was down regulated in trained singers. In the current fMRI study, we examined how masking of auditory feedback affects pitch-matching accuracy and corresponding brain activity in the same participants. We found that pitch-matching accuracy was unaffected by masking in trained singers yet declined in nonsingers...
December 1, 2016: NeuroImage
https://www.readbyqxmd.com/read/27911815/nicotinic-receptors-in-mouse-prefrontal-cortex-modulate-ultraslow-fluctuations-related-to-conscious-processing
#4
Fani Koukouli, Marie Rooy, Jean-Pierre Changeux, Uwe Maskos
The prefrontal cortex (PFC) plays an important role in cognitive processes, including access to consciousness. The PFC receives significant cholinergic innervation and nicotinic acetylcholine receptors (nAChRs) contribute greatly to the effects of acetylcholine signaling. Using in vivo two-photon imaging of both awake and anesthetized mice, we recorded spontaneous, ongoing neuronal activity in layer II/III in the PFC of WT mice and mice deleted for different nAChR subunits. As in humans, this activity is characterized by synchronous ultraslow fluctuations and neuronal synchronicity is disrupted by light general anesthesia...
December 2, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27904618/assessment-of-different-anesthesia-depth-under-total-intravenous-anesthesia-on-postoperative-cognitive-function-in-laparoscopic-patients
#5
Delin Zhang, Aiqing Nie
BACKGROUND: This study aimed to compare the effects of different depths of sedation during total intravenous anesthesia (TIVA) with remifentanil and propofol given by target-controlled infusion (TCI) on postoperative cognitive function in young and middle-aged patients undergoing gynecological laparoscopic surgery. MATERIALS AND METHODS: A total of 150 American Society of Anesthesiologists physical Status I/II patients scheduled for gynecological laparoscopic operation were randomly divided into three groups...
2016: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/27898690/isoflurane-exposure-induces-cell-death-microglial-activation-and-modifies-the-expression-of-genes-supporting-neurodevelopment-and-cognitive-function-in-the-male-newborn-piglet-brain
#6
Kevin D Broad, Jane Hassell, Bobbi Fleiss, Go Kawano, Mojgan Ezzati, Eridan Rocha-Ferreira, Mariya Hristova, Kate Bennett, Igor Fierens, Ryan Burnett, Badr Chaban, Daniel Alonso-Alconada, Aaron Oliver-Taylor, Ilias Tachsidis, Jamshid Rostami, Pierre Gressens, Robert D Sanders, Nicola J Robertson
Exposure of the brain to general anesthesia during early infancy may adversely affect its neural and cognitive development. The mechanisms mediating this are complex, incompletely understood and may be sexually dimorphic, but include developmentally inappropriate apoptosis, inflammation and a disruption to cognitively salient gene expression. We investigated the effects of a 6h isoflurane exposure on cell death, microglial activation and gene expression in the male neonatal piglet brain. Piglets (n = 6) were randomised to: (i) naive controls or (ii) 6h isoflurane...
2016: PloS One
https://www.readbyqxmd.com/read/27884107/association-between-changes-in-cerebral-grey-matter-volume-and-postoperative-cognitive-dysfunction-in-elderly-patients-study-protocol-for-a-prospective-observational-cohort-study
#7
Nicolai Goettel, Panagiota Mistridis, Manfred Berres, Julia Reinhardt, Christoph Stippich, Andreas U Monsch, Luzius A Steiner
BACKGROUND: Cognitive decline is frequently observed in elderly patients after major surgery. The pathophysiology of postoperative cognitive dysfunction (POCD) remains unclear. The aim of our investigation is to identify potential associations between brain volume change and POCD in elderly patients undergoing major surgery. METHODS: This is a prospective observational cohort study approved by the regional ethics board. We intend to compare specific brain volumes (hippocampus, lateral ventricle, total grey matter volume, regional cortical thickness) on magnetic resonance imaging and cognitive functions determined by a neuropsychological assessment battery in 70 study participants aged ≥65 years before and 3 and 12 months after major noncardiac surgery...
November 25, 2016: BMC Anesthesiology
https://www.readbyqxmd.com/read/27882447/neonatal-repeated-exposure-to-isoflurane-not-sevoflurane-in-mice-reversibly-impaired-spatial-cognition-at-juvenile-age
#8
Jianhui Liu, Yanhong Zhao, Junjun Yang, Xiaoqing Zhang, Wei Zhang, Peijun Wang
Inhalation anesthetics facilitate surgical procedures in millions of children each year. However, animal studies demonstrate that exposure to the inhalation anesthetic isoflurane may cause neuronal cell death in developing brains. The long-term cytotoxic effects of sevoflurane, the most popular pediatric anesthetic, have not been compared with isoflurane. Thus, this study was designed to compare the effects of equipotent doses of these two anesthetics on neonatal long-term neurotoxicity. Postnatal 7-day-old (P7) C57/BL male mice were exposed to 1...
November 24, 2016: Neurochemical Research
https://www.readbyqxmd.com/read/27878890/a-qualitative-exploration-of-anesthesia-trainees-experiences-during-transition-to-a-children-s-hospital
#9
Peter W Howe, Koshila Kumar
BACKGROUND: The stresses of starting a new job can make anyone feel tired and inefficient. In health care, this may impair the ability to learn at a time when there is most to learn, and increase the risk of error in a context where errors may lead to patient harm. AIM: The aim of this study was to understand issues which influence anesthesia trainees' transition to a pediatric setting. METHODS: This qualitative study utilized in-depth semi-structured interviews to gather data from 31 anesthesia trainees who had commenced work at a tertiary children's hospital between 4 and 6 weeks previously...
November 22, 2016: Paediatric Anaesthesia
https://www.readbyqxmd.com/read/27872469/preoperative-serum-microrna-155-expression-independently-predicts-postoperative-cognitive-dysfunction-after-laparoscopic-surgery-for-colon-cancer
#10
Chaoshuang Wu, Ruichun Wang, Xiaoyu Li, Junping Chen
BACKGROUND The aim of this study was to examine the association between serum expression of miRNA-155 and postoperative cognitive dysfunction (POCD) after laparoscopic surgery for colon cancer. MATERIAL AND METHODS We enrolled 110 patients scheduled to undergo colon tumor resection via laparotomy in Ningbo No. 2 Hospital from July 2013 to November 2015. The blood samples were collected from the participants 1 day before surgery. Multiple logistic regression analysis was used for the analysis of independent predictive biomarkers for POCD...
November 22, 2016: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/27871631/-benefit-of-general-anesthesia-monitored-by-bispectral-index-compared-with-monitoring-guided-only-by-clinical-parameters-systematic-review-and-meta-analysis
#11
Carlos Rogério Degrandi Oliveira, Wanderley Marques Bernardo, Victor Moisés Nunes
BACKGROUND: The bispectral index parameter is used to guide the titration of general anesthesia; however, many studies have shown conflicting results regarding the benefits of bispectral index monitoring. The objective of this systematic review with meta-analysis is to evaluate the clinical impact of monitoring with the bispectral index parameter. METHODS: The search for evidence in scientific information sources was conducted during December 2013 to January 2015, the following primary databases: Medline/PubMed, LILACS, Cochrane, CINAHL, Ovid, SCOPUS and TESES...
November 18, 2016: Revista Brasileira de Anestesiologia
https://www.readbyqxmd.com/read/27871564/effect-of-remifentanil-and-fentanyl-on-postoperative-cognitive-function-and-cytokines-level-in-elderly-patients-undergoing-major-abdominal-surgery
#12
Germano De Cosmo, Flaminio Sessa, Federico Fiorini, Elisabetta Congedo
PURPOSE: Postoperative cognitive dysfunction is a frequent complication occurring in geriatric patients. Type of anesthesia and the patient's inflammatory response may contribute to postoperative cognitive dysfunction (POCD). In this prospective randomized double-blinded controlled study we hypothesized that intraoperative remifentanil may reduce immediate and early POCD compared to fentanyl and evaluated if there is a correlation between cognitive status and postoperative inflammatory cytokines level...
December 2016: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/27867960/is-a-short-anesthetic-exposure-in-children-safe-time-will-tell-a-focused-commentary-of-the-gas-and-panda-trials
#13
COMMENT
Gregory A Chinn, Jennifer M Sasaki Russell, Jeffrey W Sall
Early life exposure to general anesthesia in preclinical studies has consistently led to permanent cognitive deficits later in life. However, the extent to which this finding is translatable to humans is the subject of much debate as the results from clinical studies have been mixed. Recently two well-designed clinical trials have attempted to add clarity to our murky understanding. The General Anesthesia compared to Spinal anesthesia (GAS) trial, was an international, prospective, randomized, multicenter, equivalence trial comparing infants undergoing herniorrhaphy receiving general anesthesia vs...
October 2016: Annals of Translational Medicine
https://www.readbyqxmd.com/read/27859797/in-vitro-and-in-vivo-effects-of-a-novel-dimeric-inhibitor-of-psd-95-on-excitotoxicity-and-functional-recovery-after-experimental-traumatic-brain-injury
#14
Jens Bak Sommer, Anders Bach, Hana Malá, Kristian Strømgaard, Jesper Mogensen, Darryl Scott Pickering
PSD-95 inhibitors have been shown to be neuroprotective in stroke, but have only to a very limited extent been evaluated in the treatment of traumatic brain injury (TBI) that has pathophysiological mechanisms in common with stroke. The aims of the current study were to assess the effects of a novel dimeric inhibitor of PSD-95, UCCB01-147, on histopathology and long-term cognitive outcome after controlled cortical impact (CCI) in rats. As excitotoxic cell death is thought to be a prominent part of the pathophysiology of TBI, we also investigated the neuroprotective effects of UCCB01-147 and related compounds on NMDA-induced cell death in cultured cortical neurons...
November 17, 2016: European Journal of Neuroscience
https://www.readbyqxmd.com/read/27858963/resting-state-functional-connectivity-and-cognition-after-major-cardiac-surgery-in-older-adults-without-preoperative-cognitive-impairment-preliminary-findings
#15
Jeffrey N Browndyke, Miles Berger, Todd B Harshbarger, Patrick J Smith, William White, Tiffany L Bisanar, John H Alexander, Jeffrey G Gaca, Kathleen Welsh-Bohmer, Mark F Newman, Joseph P Mathew
OBJECTIVES: To look for changes in intrinsic functional brain connectivity associated with postoperative changes in cognition, a common complication in seniors undergoing major surgery, using resting-state functional magnetic resonance imaging. DESIGN: Objective cognitive testing and functional brain imaging were prospectively performed at preoperative baseline and 6 weeks after surgery and at the same time intervals in nonsurgical controls. SETTING: Academic medical center...
November 17, 2016: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/27852723/regional-versus-general-anesthesia-for-promoting-independence-after-hip-fracture-regain-protocol-for-a-pragmatic-international-multicentre-trial
#16
Mark D Neuman, Susan S Ellenberg, Frederick E Sieber, Jay S Magaziner, Rui Feng, Jeffrey L Carson
INTRODUCTION: Hip fractures occur 1.6 million times each year worldwide, with substantial associated mortality and losses of independence. At present, anaesthesia care for hip fracture surgery varies widely within and between countries, with general anaesthesia and spinal anaesthesia representing the 2 most common approaches. Limited randomised evidence exists regarding potential short-term or long-term differences in outcomes between patients receiving spinal or general anaesthesia for hip fracture surgery...
November 15, 2016: BMJ Open
https://www.readbyqxmd.com/read/27845242/neo-adjuvant-chemotherapy-with-cisplatin-induces-low-expression-of-nmda-receptors-and-postoperative-cognitive-impairment
#17
Jing Cheng, Xiaoqing Liu, Longhui Cao, Tianhua Zhang, Huiting Li, Wenqian Lin
Whether Neo-adjuvant chemotherapy can affect patients' postoperative brain function is not clear. In this study, we investigated the effect of preoperative cisplatin treatment on postoperative cognitive function and its possible mechanism in rats. Moreover, we also tested whether the NMDAR inhibitor memantine could attenuate cisplatin-induced alterations. 12-month-oldSprague-Dawley rats randomly received an intraperitoneal injection of either cisplatin once a week at a dose of 3mg/kg for three consecutive weeks or an equivalent volume of normal saline...
November 11, 2016: Neuroscience Letters
https://www.readbyqxmd.com/read/27836791/pharmacological-inhibition-of-pten-attenuates-cognitive-deficits-caused-by-neonatal-repeated-exposures-to-isoflurane-via-inhibition-of-nr2b-mediated-tau-phosphorylation-in-rats
#18
Lei Tan, Xin Chen, Wei Wang, Jianfang Zhang, Shiyong Li, Yilin Zhao, Jintao Wang, Ailin Luo
Evidence has shown that children exposed to repeated anesthesia in early childhood display long-term cognitive disabilities. However, the underlying mechanisms remain largely unclear. Our previous study has indicated the involvement of phosphatase and tensin homolog deleted on chromosome 10 (PTEN) in isoflurane-induced decrease of self-renewal capacity in hippocampal neural precursor cells. Additionally, it is demonstrated by others that PTEN inhibition could protect against cognitive impairment via reduction of tau phosphorylation in the alzheimer's disease model...
November 8, 2016: Neuropharmacology
https://www.readbyqxmd.com/read/27833495/postoperative-pain-management-of-liver-transplantation-in-cystic-fibrosis-is-it-time-to-start-us-guided-neuraxial-blocks
#19
M Piazza, G Martucci, A Arcadipane
Cystic fibrosis (CF) is the most common life-limiting genetic disease in Caucasians. Declining lung function is the principal cause of death, but liver involvement can lead to the need for liver transplantation. General anesthesia has detrimental effects on pulmonary function, increasing perioperative morbidity and mortality in CF patients. Regional anesthetic techniques improve outcomes by reducing anesthetic drugs and administration of opioids, and hastening extubation, awakening, and restarting respiratory of physiotherapy...
October 2016: Saudi Journal of Anaesthesia
https://www.readbyqxmd.com/read/27833164/periodontal-tactile-input-activates-the-prefrontal-cortex
#20
Nobuaki Higaki, Takaharu Goto, Tetsuo Ichikawa
The prefrontal cortex (PFC) plays a role in complex cognitive behavioural planning, decision-making, and social behaviours. However, the effects of sensory integration during motor tasks on PFC activation have not been studied to date. Therefore, we investigated the effect of peripheral sensory information and external information on PFC activation using functional near-infrared spectroscopy (fNIRS). Cerebral blood flow (CBF) was increased around bilateral Brodmann areas 46 and 10 during visual and auditory information integration during an occlusal force (biting) task...
November 11, 2016: Scientific Reports
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