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İnhaler anesthetics

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https://www.readbyqxmd.com/read/28099324/interaction-of-isoflurane-tumor-necrosis-factor-%C3%AE-and-%C3%AE-amyloid-on-long-term-potentiation-in-rat-hippocampal-slices
#1
Ran Zhou, Philip Bickler
BACKGROUND: The relationship between inhalational anesthetics such as isoflurane and cognitive impairment in the elderly is controversial. Both β-amyloid peptide (Aβ), associated with Alzheimer disease, and tumor necrosis factor-α (TNF-α), a proinflammatory stress-related peptide, impair the synaptic function. We hypothesized that transient exposure to isoflurane and these peptides would impair synaptic function, manifest as a depression of long-term potentiation (LTP) and paired pulse facilitation (PPF), in the rat hippocampus...
February 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28097611/assessing-nitrous-oxide-effect-using-electroencephalographically-based-depth-of-anesthesia-measures-cortical-state-and-cortical-input
#2
Levin Kuhlmann, David T J Liley
Existing electroencephalography (EEG) based depth of anesthesia monitors cannot reliably track sedative or anesthetic states during n-methyl-D-aspartate (NMDA) receptor antagonist based anesthesia with ketamine or nitrous oxide (N2O). Here, a physiologically-motivated depth of anesthesia monitoring algorithm based on autoregressive-moving-average (ARMA) modeling and derivative measures of interest, Cortical State (CS) and Cortical Input (CI), is retrospectively applied in an exploratory manner to the NMDA receptor antagonist N2O, an adjuvant anesthetic gas used in clinical practice...
January 17, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28094480/anesthetic-complications-during-general-anesthesia-without-intravenous-access-in-pediatric-ophthalmologic-clinic-assessment-of-5216-cases
#3
Chun W Hung, Lauren Licina, David H Abramson, Vittoria Arslan-Carlon
BACKGROUNDː General anesthesia utilizing inhalational agents without intravenous (IV) access for minor procedures is controversial1. Eliminating IV access increases efficiency and patient satisfaction; however, the ability to introduce rapid acting medications into the circulation during an unanticipated emergency becomes challenging. The objective of this study was to examine complication risk following pediatric ophthalmologic examinations under anesthesia (EUA) without IV placement. METHODSː A retrospective review of consecutive pediatric patients who underwent EUA for retinoblastoma management was performed from 2004 to 2014...
January 17, 2017: Minerva Anestesiologica
https://www.readbyqxmd.com/read/28087784/interactions-between-zinc-and-allosteric-modulators-of-the-glycine-receptor
#4
Garrett L Cornelison, Anna W Daszkowski, Natasha C Pflanz, S John Mihic
The glycine receptor is a pentameric ligand-gated ion channel involved in fast inhibitory neurotransmission in the central nervous system. Zinc is an allosteric modulator of glycine receptor function, enhancing the effects of glycine at nM to low μM concentrations, and inhibiting its effects at higher concentrations. Low nM concentrations of contaminating zinc in electrophysiological buffers are capable of synergistically enhancing receptor modulation by other compounds such as ethanol. This suggests that, unless accounted for, previous studies of glycine receptor modulation were measuring the effects of modulator plus co-modulation by zinc on receptor function...
January 13, 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/28079564/an-anesthesiologist-s-perspective-on-the-history-of-basic-airway-management-the-artisanal-anesthetic-era-1846-to-1904
#5
Adrian A Matioc
This second installment of the history of basic airway management covers the early-artisanal-years of anesthesia from 1846 to 1904. Anesthesia was invented and practiced as a supporting specialty in the context of great surgical and medical advances. The current-day anesthesia provider tends to equate the history of airway management with the history of intubation, but for the first 58 yr after the introduction of ether anesthesia, airway management was provided by basic airway techniques with or without the use of a face mask...
January 12, 2017: Anesthesiology
https://www.readbyqxmd.com/read/28062998/high-glucose-enhances-isoflurane-induced-neurotoxicity-by-regulating-trpc-dependent-calcium-influx
#6
ZhongJie Liu, ChangQing Ma, Wei Zhao, QingGuo Zhang, Rui Xu, HongFei Zhang, HongYi Lei, ShiYuan Xu
Isoflurane is a commonly used inhalational anesthetic that can induce neurotoxicity via elevating cytosolic calcium (Ca(2+)). High glucose regulates the expression of a family of non-selective cation channels termed transient receptor potential canonical (TRPC) channels that may contribute to Ca(2+) influx. In the present study, we investigated whether high glucose enhances isoflurane-induced neurotoxicity by regulating TRPC-dependent Ca(2+) influx. First, we evaluated toxic damage in mice primary cultured hippocampal neurons and human neuroblastoma cells (SH-SY5Y cells) after hyperglycemia and isoflurane exposure...
January 6, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28033152/effect-of-general-anesthesia-on-neurodevelopmental-abnormalities-in-children-undergoing-treatment-of-vascular-anomalies-with-laser-surgery-a-retrospective-review
#7
Vitaly Terushkin, Jeremy Brauer, Leonard Bernstein, Roy Geronemus
BACKGROUND: Multiple exposures to general anesthesia may be neurotoxic to the developing brain. This relationship has not been evaluated in children undergoing laser surgery for vascular anomalies. OBJECTIVE: To evaluate the prevalence of neurodevelopmental abnormalities in children who received multiple laser procedures under general anesthesia before the age of 4 years for the treatment of vascular anomalies. METHODS AND MATERIALS: Retrospective chart review of patients with contact of parents for telephone interview...
December 26, 2016: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28030956/effects-of-long-duration-administration-of-1-isoflurane-on-resting-cerebral-blood-flow-and-default-mode-network-in-macaque-monkeys
#8
Chunxia Li, Xiaodong Zhang
Isoflurane is an inhalational anesthetic widely used in medical procedures or biomedical researches. The duration of anesthesia administration varies from minutes to hours. It is known isoflurane has dose-dependent effects on brain functionality and physiology and long-duration anesthesia administration could cause neurocognitive decline in animals and humans. However, the duration effect of isoflurane on the brain physiology and functionality still remains poorly understood. In the present study, cerebral blood flow (CBF) and functional connectivity of adult rhesus monkeys (maintained with 1% isoflurane for four hours) was examined using MRI...
December 28, 2016: Brain Connectivity
https://www.readbyqxmd.com/read/28028789/isoflurane-use-in-the-treatment-of-super-refractory-status-epilepticus-is-associated-with-hippocampal-changes-on-mri
#9
Kristin M Ikeda, Robert Connors, Donald H Lee, Alexander G Khandji, Jan Claassen, G Bryan Young
BACKGROUND: Refractory status epilepticus (RSE) is associated with high morbidity and mortality. Experts recommend aggressive management with continuous intravenous infusions or inhaled anesthetics such as isoflurane. However, there is concern that MRI changes in RSE reflect isoflurane neurotoxicity. We performed a case-control study to determine whether isoflurane is neurotoxic, based on MRI signal changes. METHODS: We performed a retrospective case-control study of the incidence of MRI changes in RSE treated with and without isoflurane...
December 27, 2016: Neurocritical Care
https://www.readbyqxmd.com/read/28027455/analysis-of-pulmonary-surfactant-by-fourier-transform-infrared-spectroscopy-after-exposure-to-sevoflurane-and-isoflurane
#10
Vilena Vrbanović Mijatović, Ljiljana Šerman, Ozren Gamulin
Pulmonary surfactant, consisting primarily of phospholipids and four surfactant-specific proteins, is among the first structures that is exposed to inhalation anesthetics. Consequently, changes of pulmonary surfactant due to this exposure could cause respiratory complications after long anesthetic procedures. Fourier transform infrared (FTIR) spectroscopy was used to explore the effects of two inhalation anesthetics, sevoflurane and isoflurane, on a commercially available pulmonary surfactant. The research was primarily focused on the effect of anesthetics on the lipid component of the surfactant...
December 21, 2016: Bosnian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/28017206/sevoflurane-pre-conditioning-increases-phosphorylation-of-erk1-2-and-ho-1-expression-via-inhibition-of-mptp-in-primary-rat-cortical-neurons-exposed-to-ogd-r
#11
Li-Min Zhang, Dong-Xue Zhang, Xiao-Chun Zhao, Wen-Bo Sun, Xiao-Jing Jiang
BACKGROUND: As an indispensable clinical inhalation anesthetic, sevoflurane is widely used for peri-operative sedation. The neuroprotective effect of sevoflurane pre-conditioning against cerebral ischemia/reperfusion has been gradually realized, but the underlying mechanism during the early reperfusion period has not been established. METHOD: Primary cultured cortical neurons were treated with 2% sevoflurane pre-conditioning for 30min, exposed to oxygen-glucose deprivation for 90min, and followed by 60min of reperfusion (OGD/R)...
January 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28005566/anesthesia-for-functional-endoscopic-sinus-surgery
#12
Daniel A Carlton, Satish Govindaraj
PURPOSE OF REVIEW: The present article summarizes anesthetic techniques used during functional endoscopic sinus surgery to decrease bleeding and aid in creating a clear surgical field. The applicable physiology behind these anesthetic techniques is reviewed with emphasis on the effect on bleeding and the surgical field. Deliberate hypotension, reverse Trendelenburg positioning, regional anesthesia, and cerebral monitoring are discussed. RECENT FINDINGS: There are mixed data as to whether traditional inhalation anesthesia or total intravenous anesthesia is superior with respect to better surgical fields and decreased blood loss...
February 2017: Current Opinion in Otolaryngology & Head and Neck Surgery
https://www.readbyqxmd.com/read/27998860/-anesthetic-effect-and-safety-of-ultrasound-guided-thoracic-paravertebral-blockade-in-sympathectomy-for-palmar-hyperhidrosis-a-randomized-controlled-trial
#13
Jin-Dong Xu, Li-Na Yu, Da-Qiang Zhao, Liang Xie, Hai-Yu Zhou, Sheng Wang
OBJECTIVE: To explore the anesthetic effect and safety of ultrasound-guided thoracic paravertebral blockade in video-assisted thoracoscopic sympathectomy for treatment of palmar hyperhidrosis. METHODS: A total of 120 patients undergoing video-assisted thoracoscopic sympathectomy for moderate or severe hyperhidrosis were randomized to receive ultrasound-guided thoracic paravertebral blockade (group A, n=60) or general anesthesia with tracheal intubation (group B, n=60)...
December 20, 2016: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/27984222/succinylcholine-for-emergency-airway-rescue-in-class-b-ambulatory-facilities-the-society-for-ambulatory-anesthesia-position-statement
#14
Girish P Joshi, Meena S Desai, Steven Gayer, Hector Vila
Procedures in class B ambulatory facilities are performed exclusively with oral or IV sedative-hypnotics and/or analgesics. These facilities typically do not stock dantrolene because no known triggers of malignant hyperthermia (ie, inhaled anesthetics and succinylcholine) are available. This article argues that, in the absence of succinylcholine, the morbidity and mortality from laryngospasm can be significant, indeed, higher than the unlikely scenario of succinylcholine-triggered malignant hyperthermia. The Society for Ambulatory Anesthesia (SAMBA) position statement for the use of succinylcholine for emergency airway management is presented...
December 15, 2016: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/27959299/drug-induced-liver-injury
#15
Leslie A Hamilton, Angela Collins-Yoder, Rachel E Collins
Drug-induced liver injury (DILI) can result from both idiosyncratic and intrinsic mechanisms. This article discusses the clinical impact of DILI from a broad range of medications as well as herbal and dietary supplements. Risk factors for idiosyncratic DILI (IDILI) are the result of multiple host, environmental, and compound factors. Some triggers of IDILI often seen in critical care include antibiotics, antiepileptic medications, statins, novel anticoagulants, proton pump inhibitors, inhaled anesthetics, nonsteroidal anti-inflammatory agents, methotrexate, sulfasalazine, and azathioprine...
October 2016: AACN Advanced Critical Care
https://www.readbyqxmd.com/read/27928173/incidence-of-post-anesthetic-colic-in-non-fasted-adult-equine-patients
#16
Patricia A Bailey, Brent A Hague, Michael Davis, Michael D Major, Chad J Zubrod, Jeff E Brakenhoff
The purpose of this study was to determine the incidence of post-anesthetic colic in non-fasted adult horses undergoing isoflurane inhalant anesthesia for an elective, non-abdominal procedure at a single referral center. Medical records were searched from May 1, 2012 to May 31, 2014. Inclusion criteria included non-fasted patients ≥ 2 years of age that were anesthetized for an elective, non-abdominal procedure. The incidence of post-anesthetic colic for this study population was 2.5%. None of the risk factors examined (season, age, gender, breed, surgeon, procedure, recumbency, butorphanol administration, additional surgical complications, and the length of anesthesia) were associated with an increased risk of post-anesthetic colic...
December 2016: Canadian Veterinary Journal. la Revue Vétérinaire Canadienne
https://www.readbyqxmd.com/read/27919178/comparison-of-respiratory-inductive-plethysmography-versus-head-out-plethysmography-for-anesthetized-nonhuman-primates-in-an-animal-biosafety-level-4-facility
#17
J Kyle Bohannon, Anna N Honko, Rebecca J Reeder, Kurt Cooper, Russ Byrum, Laura Bollinger, Jens H Kuhn, Jiro Wada, Jing Qin, Peter B Jahrling, Matthew G Lackemeyer
For inhalational studies and aerosol exposures to viruses, head-out plethysmography acquisition has been traditionally used for the determination of estimated inhaled dose in anesthetized nonhuman primates prior to or during an aerosol exposure. A pressure drop across a pneumotachograph is measured within a sealed chamber during inspiration/exhalation of the nonhuman primate, generating respiratory values and breathing frequencies. Due to the fluctuation of depth of anesthesia, pre-exposure respiratory values can be variable, leading to less precise and accurate dosing calculations downstream...
December 2016: Inhalation Toxicology
https://www.readbyqxmd.com/read/27918332/isoflurane-impairs-motor-function-recovery-by-increasing-neuroapoptosis-and-degeneration-during-spinal-ischemia-reperfusion-injury-in-rats
#18
Shih-Yuan Fang, Jung-Shun Lee, Jun-Neng Roan, Yu-Chuan Tsai, Chen-Fuh Lam
BACKGROUND: Spinal cord ischemia (SCI) leads to variable degrees of neurologic deficit in patients undergoing major cardiovascular surgery. The effect of intraoperative neuroprotection against SCI and the subsequent ischemia-reperfusion injury is still limited. Because isoflurane is a commonly used anesthetic agent during major operation, and its neuroprotective and neurotoxicity effects have both been discussed, this study aimed to investigate the effect of isoflurane on the spinal cord's functional recovery in a rat model of cord ischemia...
January 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/27909728/calcineurin-nuclear-factor-%C3%AE%C2%BAb-signaling-mediates-isoflurane-induced-hippocampal-neuroinflammation-and-subsequent-cognitive-impairment-in-aged-rats
#19
Zhengqian Li, Cheng Ni, Chun Xia, Joey Jaw, Yujie Wang, Yiyun Cao, Mao Xu, Xiangyang Guo
It is known that inhaled anesthetics induce neuroinflammation and facilitate postoperative cognitive dysfunction (POCD) in aged individuals; however, the mechanisms by which they mediate these effects remain elusive. Inhalation of the isoflurane anesthetic leads to opening of the mitochondrial permeability transition pore and loss of mitochondrial membrane potential. Therefore, mitochondrial retrograde signaling, which is an adaptive mechanism that facilitates the transmission of signals from dysfunctional mitochondria to the nucleus to activate target gene expression, may be activated during isoflurane inhalation...
January 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/27908275/does-standing-or-sitting-position-of-the-anesthesiologist-in-the-operating-theatre-influence-sevoflurane-exposure-during-craniotomies
#20
Péter Sárkány, Béla Tankó, Éva Simon, Judit Gál, Béla Fülesdi, Csilla Molnár
BACKGROUND: Exposure of the OR staff to inhalational anesthetics has been proven by numerous investigators, but its potential adverse effect under the present technical circumstances is a debated issue. The aim of the present work was to test whether using a laminar flow air conditioning system exposure of the team to anesthetic gases is different if the anesthetist works in the sitting as compared to the standing position. METHODS: Sample collectors were placed at the side of the patient and were fixed at two different heights: at 100 cm (modelling sitting position) and 175 cm (modelling standing position), whereas the third collector was placed at the independent corner of the OR...
December 1, 2016: BMC Anesthesiology
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