Read by QxMD icon Read

Volatile anesthetic

J P Cata, K B Hagan, S D O Bhavsar, R Arunkumar, R Grasu, A Dang, R Carlson, B Arnold, Y Potylchansky, I Lipski, T McHugh, F Jimenez, A T Nguyen, L Feng, T F Rahlfs
BACKGROUND: Several studies have examined the impact of anesthetics on cancer recurrence. Isoflurane but not desflurane has protumoral effects. We hypothesize the use of isoflurane but not desflurane during surgery for primary GBM is an independent predictor of disease progression and mortality. METHODS: 378 adult patients were included in the study. The progression free survival (PFS) and overall survival (OS) rates at 1 and 5years were compared in patients who had either desflurane or isoflurane alone or in combination with propofol infusion...
October 17, 2016: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
Guy Bar-Klein, Rebecca Klee, Claudia Brandt, Marion Bankstahl, Pablo Bascuñana, Kathrin Töllner, Hotjensa Dalipaj, Jens P Bankstahl, Alon Friedman, Wolfgang Löscher
OBJECTIVE: Acquired epilepsy is a devastating long-term risk of various brain insults, including trauma, stroke, infections, and status epilepticus (SE). There is no preventive treatment for patients at risk. Due to the complex alterations involved in epileptogenesis, it is likely that multi-targeted approaches are required for epilepsy prevention. We report novel preclinical findings with isoflurane, which exerts various non-anesthetic effects that may be relevant for anti-epileptogenesis...
October 19, 2016: Annals of Neurology
Yan Yin, Hong Xiao, Jirimutuya Han, Weiyi Zhang, Jianguo Cheng, Tao Zhu
BACKGROUND: It has been observed that patients with liver dysfunction need lower dose anesthetic compared patients with normal liver function. The minimum amount of volatile anesthetic to achieve an optimal depth of anesthesia for these patients is still unclear. In this study, Minimum alveolar concentration (MAC) of the sevoflurane was determined using an electric stimulation and the effect of severity of liver dysfunction on the MAC was observed in cirrhotic patients. METHODS: Thirty patients undergoing upper abdominal surgery were divided into the following groups: group N (normal liver function), group A (Child-Pugh grade A) and group B (Child-Pugh grade B-C)...
October 18, 2016: BMC Anesthesiology
Reshma B Muniyappa, Geetha C Rajappa, Suresh Govindswamy, Prathima P Thamanna
BACKGROUND AND OBJECTIVE: Various adjuvants have been introduced to decrease the dose of volatile agents and their side effects. Dexmedetomidine a potent alpha-2 adrenoreceptor agonist is one such agent. Our objective is to assess the effect of preanesthetic dexmedetomidine on isoflurane consumption and its effect on intraoperative hemodynamic stability and recovery profile. SETTING AND DESIGN: This prospective, randomized controlled, double-blind study was done in a tertiary care hospital...
September 2016: Anesthesia, Essays and Researches
Keelara Shivalingaiah Savitha, Radhika Dhanpal, J Shilpa
BACKGROUND: Multimodal analgesia (MMA) by synergy with volatile anesthetics minimizes their use thus decreasing operation theater pollution and greenhouse gas emission. AIMS: To estimate minimum alveolar concentration (MAC) requirement of isoflurane (ISO) for skin incision with use of MMA in the study group versus conventional regime in the control group for a constant bispectral index (BIS). To observe the side effects of analgesic drugs administered in the study...
September 2016: Anesthesia, Essays and Researches
Kirsten F Smit, Daniel Brevoord, Stefan De Hert, Bas A de Mol, Raphaela P Kerindongo, Susan van Dieren, Wolfgang S Schlack, Markus W Hollmann, Nina C Weber, Benedikt Preckel
BACKGROUND: The noble gas helium induces pre- and postconditioning in animals and humans. Volatile anesthetics induce cardioprotection in humans undergoing coronary artery bypass graft (CABG) surgery. We hypothesized that helium induces pre- and postconditioning in CABG-patients, affecting signaling molecules protein kinase C-epsilon (PKC-ε), p38 mitogen activated protein kinase (p38 MAPK), extracellular signal-regulated kinase 1/2 (ERK-1/2) and heat shock protein 27 (HSP-27) within cardiac tissue, and reducing postoperative troponin levels...
October 14, 2016: Journal of Translational Medicine
Keith L Shelton
Inhalants are a loosely organized category of abused compounds defined entirely by their common route of administration. Inhalants include volatile solvents, fuels, volatile anesthetics, gasses, and liquefied refrigerants, among others. They are ubiquitous in modern society as ingredients in a wide variety of household, commercial, and medical products. Persons of all ages abuse inhalants but the highest prevalence of abuse is in younger adolescents. Although inhalants have been shown to act upon a host of neurotransmitter receptors, the stimulus effects of the few inhalants which have been trained or tested in drug discrimination procedures suggest that their discriminative stimulus properties are mediated by a few key neurotransmitter receptor systems...
October 7, 2016: Current Topics in Behavioral Neurosciences
Youssef Motiaa, Mustapha Bensghir, Abdelhamid Jaafari, Mohammed Meziane, Redouane Ahtil, Noureddine Drissi Kamili
BACKGROUND: Endoscopic retrograde cholangiopancreatography (ERCP) is a technique used both for diagnosis and for the treatment of biliary and pancreatic diseases. ERCP has some anesthetic implications and specific complications. The primary outcome aim was to compare two protocols in terms of time of extubation. We also compared anesthetic protocols in terms of hemodynamic and respiratory instability, antispasmodics needs, endoscopist satisfaction, and recovery room stay. METHODS: Patients were randomized into two groups standard anesthesia group (Gr: SA) in whom induction was done by propofol, fentanyl and cisatracurium and maintenance was done by a mixture of oxygen, nitrousoxide (50%:50%) and sevoflurane; and intravenous anesthesia group to target concentration (Gr: TCI) in whom induction and maintenance of anesthesia were done with propofol with a target 0...
October 2016: Annals of Gastroenterology: Quarterly Publication of the Hellenic Society of Gastroenterology
David Freiermuth, Berend Mets, Daniel Bolliger, Oliver Reuthebuch, Thomas Doebele, Markus Scholz, Michael Gregor, Matthias Haschke, Manfred Daniel Seeberger, Jens Fassl
OBJECTIVES: This study aimed to evaluate the pharmacokinetic profiles of sevoflurane and isoflurane during use of minimized extracorporeal circulation to perform coronary artery bypass graft surgery. Furthermore, cardiovascular stability during bypass and the postoperative release of troponins were evaluated. DESIGN: Prospective, randomized study. SETTING: University hospital. PARTICIPANTS: The study comprised 31 adult patients undergoing coronary artery bypass grafting...
July 12, 2016: Journal of Cardiothoracic and Vascular Anesthesia
Daisy Lin, Jinyang Liu, Lea Kramberg, Andrea Ruggiero, James Cottrell, Ira S Kass
BACKGROUND: Single-episode anesthetic exposure is the most prevalent surgery-related incidence among young children in the United States. Although numerous studies have used animals to model the effects of neonatal anesthetics on behavioral changes later on in life, our understanding of the functional consequences to the developing brain in a comprehensive and clinically relevant manner is unclear. METHODS: The volatile anesthetic, sevoflurane (sevo) was administered to C57BL6 postnatal day 7 (P7) mice in a 40% oxygen and 60% nitrogen gas mixture...
September 2016: Brain and Behavior
Amelia R Adelsperger, Krista J Bigiarelli-Nogas, Irina Toore, Craig J Goergen
A traditional vaporizer depends on flowing gas and atmospheric pressure for passive anesthetic vaporization. Newly developed direct injection vaporizers utilize a syringe pump to directly administer volatile anesthetics into a gas stream. Unlike a traditional vaporizer, it can be used at very low flow rates, making it ideal for use on mice and rats. The equipment's capability to use low flow rates could result in a substantial cost savings due to the reduced need for anesthetic agents, compressed gas, and charcoal scavenging filters(1)...
2016: Journal of Visualized Experiments: JoVE
Bin Liu, Junming Xia, Yali Chen, Jun Zhang
Neonatal exposure to volatile anesthetics causes apoptotic neurodegeneration in the developing brain, possibly leading to neurocognitive deficits in adulthood. Endoplasmic reticulum (ER) stress might be associated with sevoflurane (sevo)-induced neuroapoptosis. However, the signaling pathway regulating sevo-induced neuroapoptosis is not understood. We investigated the effects of neonatal sevo exposure on ER signaling pathway activation. Seven-day-old mouse pups were divided into control (C) and sevo (S; 3 % sevo exposure, 6 h) groups...
September 28, 2016: Neurotoxicity Research
Kátina M Souza, Leandro G Braz, Flávia R Nogueira, Marajane B Souza, Lahis F Bincoleto, Aline G Aun, José E Corrente, Lídia R Carvalho, José Reinaldo C Braz, Mariana G Braz
Data on the genotoxic and mutagenic effects of occupational exposure to the most frequently used volatile anesthetics are limited and controversial. The current study is the first to evaluate genomic instability, cell death and proliferative index in exfoliated buccal cells (EBC) from anesthesiologists. We also evaluated DNA damage and determined the concentrations of the anesthetic gases most commonly used in operating rooms. This study was conducted on physicians who were allocated into two groups: the exposed group, which consisted of anesthesiologists who had been exposed to waste anesthetic gases (isoflurane, sevoflurane, desflurane and nitrous oxide - N2O) for at least two years; and the control group, which consisted of non-exposed physicians matched for age, sex and lifestyle with the exposed group...
September 2016: Mutation Research
De-An Zhao, Ling-Yun Bi, Qian Huang, Fang-Min Zhang, Zi-Ming Han
BACKGROUND AND OBJECTIVES: Isoflurane is halogenated volatile ether used for inhalational anesthesia. It is widely used in clinics as an inhalational anesthetic. Neonatal hypoxic ischemia injury ensues in the immature brain that results in delayed cell death via excitotoxicity and oxidative stress. Isoflurane has shown neuroprotective properties that make a beneficial basis of using isoflurane in both cell culture and animal models, including various models of brain injury. We aimed to determine the neuroprotective effect of isoflurane on hypoxic brain injury and elucidated the underlying mechanism...
September 13, 2016: Revista Brasileira de Anestesiologia
Ke Peng, Hua-Yue Liu, Shao-Ru Wu, Hong Liu, Zhao-Cai Zhang, Fu-Hai Ji
BACKGROUND: Many studies have compared propofol-based anesthesia with inhalational anesthesia. Results from several studies have shown improved postoperative analgesia after propofol anesthesia, but other studies showed contradictory results. There are no large prospective studies that compare postoperative pain after propofol versus inhalational anesthesia. This meta-analysis was designed to focus on this question. METHODS: A systematic literature search for randomized controlled trials that compared propofol-based anesthesia with volatile agents-based anesthesia in adults undergoing surgery was conducted...
October 2016: Anesthesia and Analgesia
Katie J Schenning, Henry Casson, Sarah V Click, Lucas Brambrink, Thomas T Chatkupt, Nabil J Alkayed, Michael P Hutchens
At room temperature, the vapor pressures of desflurane, isoflurane, and sevoflurane are well above the clinically useful range. We hypothesized that therapeutic concentrations of these agents could be achieved at temperatures below 0°C, but the vapor pressure-temperature relationship is unknown below 0. Second, we hypothesized that this relationship could be exploited to deliver therapeutic-range concentrations of anesthetic vapor. We therefore set out to determine the low temperature-vapor pressure relationships of each anesthetic agent, thereby identifying the saturated vapor concentration of each agent at any temperature below 0°C...
September 13, 2016: Anesthesia and Analgesia
Martín Galvalisi, José Pedro Prieto, Marcela Martínez, Juan Andrés Abin-Carriquiry, Cecilia Scorza
Oral, intraperitoneal, or intravenous have been the common routes of administration used to study the behavioral and neurochemical pharmacology of caffeine, one of the most widely used psychoactive substances worldwide. We have reported that caffeine is an active adulterant frequently found in coca-paste (CP)-seized samples, a highly addictive form of smokable cocaine. The role of caffeine in the psychostimulant and neurochemical effects induced by CP remains under study. No preclinical animal studies have been performed so far to characterize the effects of caffeine when it is administered through the pulmonary inhalation route...
September 8, 2016: Neurotoxicity Research
Tomasz Gaszynski
INTRODUCTION: We report on the anesthetic management using opioid-free method of a patient with Steinert syndrome (myotonic dystrophy, MD), autosomal dominant dystrophy which is characterized by consistent contracture of muscle following stimulation. A myotonic crisis can be induced by numerous factors including hypothermia, shivering, and mechanical or electrical stimulation. In patients with MD, hypersensitivity to anesthetic drugs, especially muscle relaxants and opioids, may complicate postoperative management...
September 2016: Medicine (Baltimore)
Vivek Rayadurg, Radhakrishnan Muthuchellappan, Umamaheshwara Rao
Posthypoxic myoclonus (Lance-Adams syndrome) is characterized by myoclonus involving multiple muscle groups which is resistant to most conventional antiepileptic drugs. We present a case of hypoxic brain injury-induced myoclonic status epilepticus successfully controlled with isoflurane. The antimyoclonic effects of isoflurane are likely due to potentiation of inhibitory postsynaptic GABAA receptor-mediated currents and its effects on thalamocortical pathways. It is effective even when intravenous agents fail to control myoclonus...
August 2016: Indian Journal of Critical Care Medicine
Ozgur Yagan, Kadir Özyilmaz, Ahmet Özmaden, Özgür Sayin, Volkan Hanci
Stiff Person Syndrome (SPS), typified by rigidity in muscles of the torso and extremities and painful episodic spasms, is a rare autoimmune-based neurological disease. Here we present the successful endotracheal intubation and application of TIVA without muscle relaxants on an SPS patient. A 46 years old male patient was operated with ASA-II physical status because of lumber vertebral compression fracture. After induction of anesthesia using lidocaine, propofol and remifentanil tracheal intubation was completed easily without neuromuscular blockage...
September 2016: Brazilian Journal of Anesthesiology
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"