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Anesthesia and cognitive function

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https://www.readbyqxmd.com/read/28338180/influence-of-dexmedetomidine-to-cognitive-function-during-recovery-period-for-children-with-general-anesthesia
#1
Z-M Jia, H-N Hao, M-L Huang, D-F Ma, X-L Jia, B Ma
OBJECTIVE: We studied the influence of Dexmedetomidine on cognitive function in children during the recovery period of general anesthesia. PATIENTS AND METHODS: Ninety-three children who underwent general anesthesia were selected and randomly divided into (1) the control group, (2) the dexmedetomidine group, and (3) the dezocine group. Fentanyl, propofol, and rocuronium were used in all patients to induce anesthesia, while sevoflurane inhalation and propofol were used to maintain anesthesia...
March 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28317003/peri-operative-inflammatory-cytokines-in-plasma-of-the-elderly-correlate-in-prospective-study-with-postoperative-changes-in-cognitive-test-scores
#2
R Kline, E Wong, M Haile, S Didehvar, S Farber, A Sacks, E Pirraglia, M J de Leon, A Bekker
Increasingly, postoperative cognitive dysfunction (POCD) is recognized as a complication after surgery in the elderly; but it's etiology remains unclear. Here we examine changes in cytokine levels during both the pre-operative and postoperative period, comparing them with long term variation in cognitive test scores. Forty-one patients aged 65 and older undergoing major surgery with general anesthesia were recruited after written consent in this IRB approved study. Thirty went on to complete this prospective, non-interven-tional and non-randomized study...
August 2016: Int J Anesthesiol Res
https://www.readbyqxmd.com/read/28298935/cardioprotection-of-electroacupuncture-for-enhanced-recovery-after-surgery-on-patients-undergoing-heart-valve-replacement-with-cardiopulmonary-bypass-a-randomized-control-clinical-trial
#3
Fangxiang Zhang, Xiangdi Yu, Hong Xiao
We attempted to investigate cardioprotection of electroacupuncture (EA) for enhanced recovery after surgery on patients undergoing heart valve replacement with cardiopulmonary bypass. Forty-four patients with acquired heart valve replacement were randomly allocated to the EA group or the control group. Patients in the EA group received EA stimulus at bilateral Neiguan (PC6), Ximen (PC4), Shenting (GV24), and Baihui (GV20) acupoints twenty minutes before anesthesia induction to the end of surgery. The primary end point was cardioprotection effect of electroacupuncture postoperatively and the secondary endpoints were quality of recovery and cognitive functioning postoperatively...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28298244/frailty-related-to-anesthesia-guided-by-the-index-bispectral-frail-study-study-protocol-for-a-randomized-controlled-trial
#4
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/28293478/disrupted-brain-network-functional-dynamics-and-hyper-correlation-of-structural-and-functional-connectome-topology-in-patients-with-breast-cancer-prior-to-treatment
#5
Shelli R Kesler, Marjorie Adams, Melissa Packer, Vikram Rao, Ashley M Henneghan, Douglas W Blayney, Oxana Palesh
INTRODUCTION: Several previous studies have demonstrated that cancer chemotherapy is associated with brain injury and cognitive dysfunction. However, evidence suggests that cancer pathogenesis alone may play a role, even in non-CNS cancers. METHODS: Using a multimodal neuroimaging approach, we measured structural and functional connectome topology as well as functional network dynamics in newly diagnosed patients with breast cancer. Our study involved a novel, pretreatment assessment that occurred prior to the initiation of any cancer therapies, including surgery with anesthesia...
March 2017: Brain and Behavior
https://www.readbyqxmd.com/read/28279665/multiple-sevoflurane-anesthesia-in-pregnant-mice-inhibits-neurogenesis-of-fetal-hippocampus-via-repressing-transcription-factor-pax6
#6
Fang Fang, Ruixue Song, Xiaomim Ling, Mengyuan Peng, Zhanggang Xue, Jing Cang
Sevoflurane is widely used in non-obstetric surgeries of pregnant women, but its influences on fetal brain are still not fully known. We set out to assess the effects of multiple maternal sevoflurane exposure on neurogenesis and cognitive dysfunction in fetus and offspring. Pregnant mice (gestational day 15.5) and cultured mouse neural stem cells (NSCs) received daily sevoflurane exposure (2.5%×2h and 4.1%×2h respectively) for three consecutive days. Cognitive function of the offspring was determined with the Morris water maze...
March 6, 2017: Life Sciences
https://www.readbyqxmd.com/read/28269788/anesthesia-surgery-induces-cognitive-impairment-in-female-alzheimer-s-disease-transgenic-mice
#7
Ce Zhang, Yiying Zhang, Yuan Shen, Guoqing Zhao, Zhongcong Xie, Yuanlin Dong
Anesthesia and/or surgery may promote Alzheimer's disease (AD) by accelerating its neuropathogenesis. Other studies showed different findings. However, the potential sex difference among these studies has not been well considered, and it is unknown whether male or female AD patients are more vulnerable to develop postoperative cognitive dysfunction. We therefore set out to perform a proof of concept study to determine whether anesthesia and surgery can have different effects in male and female AD transgenic (Tg) mice, and in female AD Tg plus Cyclophilin D knockout (CypD KO) mice...
2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28253549/the-immune-response-of-the-human-brain-to-abdominal-surgery
#8
Anton Forsberg, Simon Cervenka, Malin Jonsson Fagerlund, Lars S Rasmussen, Henrik Zetterberg, Helena Erlandsson Harris, Pernilla Stridh, Eva Christensson, Anna Granström, Anna Schening, Karin Dymmel, Nina Knave, Niccolò Terrando, Mervyn Maze, Jacqueline Borg, Andrea Varrone, Christer Halldin, Kaj Blennow, Lars Farde, Lars I Eriksson
OBJECTIVE: Surgery launches a systemic inflammatory reaction that reaches the brain and associates with immune activation and cognitive decline. While preclinical studies have in part described this systemic-to-brain signaling pathway, we lack information on how these changes appear in humans. This study examines the short- and long-term impact of abdominal surgery on the human brain immune system by Positron Emission Tomography (PET) in relation to blood immune reactivity, plasma inflammatory biomarkers and cognitive function...
March 2, 2017: Annals of Neurology
https://www.readbyqxmd.com/read/28240778/predictors-of-posttraumatic-stress-symptoms-and-association-with-fear-of-falling-after-hip-fracture
#9
Sara L Kornfield, Eric J Lenze, Kerri S Rawson
OBJECTIVES: To determine whether fall-related hip fracture, alone or in the presence of Fear of Falling, is likely to induce PTSD in an elderly population. DESIGN: A longitudinal prospective study of patients admitted for hip fracture. SETTING: Eight St. Louis, Missouri, area hospitals. PARTICIPANTS: Individuals aged 60 and older admitted for surgical hip fracture repair after a fall (N = 456). MEASUREMENTS: Rates of partial and full posttraumatic stress disorder (pPTSD and fPTSD) were compared with rates of FoF...
February 27, 2017: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/28217289/peripheral-surgical-wounding-may-induce-cognitive-impairment-through-interlukin-6-dependent-mechanisms-in-aged-mice
#10
Yuanlin Dong, Zhipeng Xu, Lining Huang, Yiying Zhang, Zhongcong Xie
Post-operative cognitive dysfunction (POCD) is associated with morbidity, mortality and increased cost of medical care. However, the neuropathogenesis and targeted interventions of POCD remain largely to be determined. We have found that the peripheral surgical wounding induces an age-dependent Aβ accumulation, neuroinflammation and cognitive impairment in aged mice. Pro-inflammatory cytokine interlukin-6 (IL-6) has been reported to be associated with cognitive impairment in rodents and humans. However, the role of IL-6 in the neuropathogenesis of POCD is unknown...
October 2016: Medical Gas Research
https://www.readbyqxmd.com/read/28212172/cognitive-decline-associated-with-anesthesia-and-surgery-in-the-elderly-does-this-contribute-to-dementia-prevalence
#11
Lisbeth Evered, David A Scott, Brendan Silbert
PURPOSE OF REVIEW: To provide an update on the current state of research investigating the effects of anesthesia and surgery on cognition in the elderly, including consideration of overlap with cognitive disorders in the community. RECENT FINDINGS: The studies reviewed here identify detrimental effects of anesthesia and surgery on cognition in a proportion of elderly individuals. Animal models demonstrate an association between anesthetic agents and Alzheimer's disease pathology...
February 15, 2017: Current Opinion in Psychiatry
https://www.readbyqxmd.com/read/28198714/downregulation-of-circulating-insulin-like-growth-factor-1-contributes-to-memory-impairment-in-aged-mice-after-sevoflurane-anesthesia
#12
Jue Jiang, Xiang Lv, Xiaoyang Wu, Yaqiong Yang, Hong Jiang
Insulin-like growth factor 1 (IGF-1) is a neuroprotective hormone and a decrease in levels of circulating IGF-1 contributes toward cognitive decline. The aim of this study was to investigate the effect of sevoflurane on the level of circulating IGF-1 and cognitive function in aged mice and the role of circulating IGF-1 in the cognitive dysfunction induced by sevoflurane. Aged mice were exposed to 1 or 2 minimal alveolar concentrations of sevoflurane for 4 or 8 h. Before and after the exposure, blood was collected from the tail vein and serum IGF-1 was measured by an enzyme-linked immunosorbent assay...
April 2017: Behavioural Pharmacology
https://www.readbyqxmd.com/read/28194658/the-interaction-of-intramuscular-ketorolac-toradol-and-concussion-in-a-rat-model
#13
Amanda O Esquivel, Sarah S Sherman, Cynthia A Bir, Stephen E Lemos
The purpose of this study was to examine the interaction of a single dose of Toradol and head impact in an in vivo rat model for sport-related concussion using a validated rat concussion model. Thirty-five Sprague-Dawley rats were placed into one of four groups: (1) Control, (2) Impact Only, (3) Toradol Only, (4) Impact and Toradol. Animals in the impact groups were subjected to a single head impact. Animals in the Toradol group received a single intramuscular injection of Toradol prior to impact. We examined magnetic resonance imaging, serum S100-B and cognitive function using a Morris Water Maze...
February 13, 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/28193114/the-relationship-of-exposure-to-anesthesia-on-outcomes-in-children-with-isolated-oral-clefts
#14
Amy L Conrad, Jon W Goodwin, James Choi, Robert I Block, Peg Nopoulos
This study evaluated the relationship between exposure to anesthesia and previously identified differences in cognitive functioning, growth, and volumetric brain measures among a sample of children, adolescents, and young adults with isolated oral clefts. Data from a cross-sectional study were combined with a retrospective chart review. Data were obtained for 87 participants with isolated cleft lip and/or palate (55% male), ranging from 7.5 to 27 years old (mean = 15.78, standard deviation = 4.58). Measures of interest included cognitive functioning, growth measures, and brain volumes...
March 2017: Journal of Child Neurology
https://www.readbyqxmd.com/read/28182690/impact-of-dexmedetomidine-on-the-incidence-of-delirium-in-elderly-patients-after-cardiac-surgery-a-randomized-controlled-trial
#15
Xue Li, Jing Yang, Xiao-Lu Nie, Yan Zhang, Xue-Ying Li, Li-Huan Li, Dong-Xin Wang, Daqing Ma
BACKGROUND: Delirium is a frequent complication after cardiac surgery and its occurrence is associated with poor outcomes. The purpose of this study was to investigate the impact of perioperative dexmedetomidine administration on the incidence of delirium in elderly patients after cardiac surgery. METHODS: This randomized, double-blinded, and placebo-controlled trial was conducted in two tertiary hospitals in Beijing between December 1, 2014 and July 19, 2015. Eligible patients were randomized into two groups...
2017: PloS One
https://www.readbyqxmd.com/read/28168839/histamine-h3-receptor-antagonist-prevents-memory-deficits-and-synaptic-plasticity-disruption-following-isoflurane-exposure
#16
Tao Luo, Ying Wang, Jian Qin, Zhi-Gang Liu, Min Liu
BACKGROUND: Exposure to pharmacological concentration of inhaled anesthetics such as isoflurane can cause short- or long-term cognitive impairments in preclinical studies. The selective antagonists of the histamine H3 receptors are considered as a promising group of novel therapeutic agents for the treatment of cognitive disorders. In this study, we investigated whether ciproxifan, a nonimidazole antagonist of H3 histamine receptors, could overcome the functional and electrophysiological sequela associated with isoflurane anesthesia...
February 6, 2017: CNS Neuroscience & Therapeutics
https://www.readbyqxmd.com/read/28151820/associations-between-impaired-cerebral-blood-flow-autoregulation-cerebral-oxygenation-and-biomarkers-of-brain-injury-and-postoperative-cognitive-dysfunction-in-elderly-patients-after-major-noncardiac-surgery
#17
Nicolai Goettel, Christoph S Burkhart, Ariane Rossi, Brenno C T Cabella, Manfred Berres, Andreas U Monsch, Marek Czosnyka, Luzius A Steiner
BACKGROUND: Increasing evidence links postoperative cognitive dysfunction (POCD) to surgery and anesthesia. POCD is recognized as an important neuropsychological adverse outcome in surgical patients, particularly the elderly. This prospective cohort study aimed to investigate whether POCD is associated with impaired intraoperative cerebral autoregulation and oxygenation, and increased levels of biomarkers of brain injury. METHODS: Study subjects were patients ≥65 years of age scheduled for major noncardiac surgery...
March 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28086911/enhanced-neuroinflammation-mediated-by-dna-methylation-of-the-glucocorticoid-receptor-triggers-cognitive-dysfunction-after-sevoflurane-anesthesia-in-adult-rats-subjected-to-maternal-separation-during-the-neonatal-period
#18
Yangzi Zhu, Yu Wang, Rui Yao, Ting Hao, Junli Cao, He Huang, Liwei Wang, Yuqing Wu
BACKGROUND: Mounting evidence indicates that children who experience abuse and neglect are prone to chronic diseases and premature mortality later in life. One mechanistic hypothesis for this phenomenon is that early life adversity alters the expression or functioning of the glucocorticoid receptor (GR) throughout the course of life and thereby increases sensitivity to inflammatory stimulation. An exaggerated pro-inflammatory response is generally considered to be a key cause of postoperative cognitive dysfunction (POCD)...
January 7, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28056424/neonatal-anesthetic-neurotoxicity-insight-into-the-molecular-mechanisms-of-long-term-neurocognitive-deficits
#19
REVIEW
Deshui Yu, Linji Li, Weiguo Yuan
Mounting animal studies have demonstrated that almost all the clinically used general anesthetics could induce widespread neuroapoptosis in the immature brain. Alarmingly, some published findings have reported long-term neurocognitive deficits in response to early anesthesia exposure which deeply stresses the potential seriousness of developmental anesthetic neurotoxicity. However, the connection between anesthesia induced neuroapoptosis and subsequent neurocognitive deficits remains controversial. It should be noted that developmental anesthesia related neurotoxicity is not limited to neuroapoptosis...
March 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28051967/introducing-a-novel-applicant-ranking-tool-to-predict-future-resident-performance-a-pilot-study
#20
Sarah N Bowe, Erik K Weitzel, William N Hannah, Brian M Fitzgerald, Gregory P Kraus, Christopher J Nagy, Stephen A Harrison
The purposes of this study are to (1) introduce our novel Applicant Ranking Tool that aligns with the Accreditation Council for Graduate Medical Education competencies and (2) share our preliminary results comparing applicant rank to current performance. After a thorough literature review and multiple roundtable discussions, an Applicant Ranking Tool was created. Feasibility, satisfaction, and critiques were discussed via open feedback session. Inter-rater reliability was assessed using weighted kappa statistic (κ) and Kendall coefficient of concordance (W)...
January 2017: Military Medicine
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