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nitrous oxide anesthesia

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https://www.readbyqxmd.com/read/29887036/-comparison-of-endotracheal-tube-cuff-pressure-changes-using-air-versus-nitrous-oxide-in-anesthetic-gases-during-laparoscopic-abdominal-surgeries
#1
Shweta Sarjerao Mogal, Lipika Baliarsing, Raylene Dias, Pinakin Gujjar
BACKGROUND AND OBJECTIVES: The purpose of this study was to compare the endotracheal tube cuff pressure changes during laparoscopic surgeries using air versus nitrous-oxide in anesthetic gas mixture; and to observe the incidences of postoperative sore throat, hoarseness and dysphagia. METHODS: Total 100 patients scheduled for elective laparoscopic abdominal surgery were allocated into two groups. Group A (n=50) received air while Group N (n=50) received nitrous-oxide in anesthetic gas mixture...
June 7, 2018: Revista Brasileira de Anestesiologia
https://www.readbyqxmd.com/read/29867405/remifentanil-and-nitrous-oxide-anesthesia-produces-a-unique-pattern-of-eeg-activity-during-loss-and-recovery-of-response
#2
Sarah L Eagleman, Caitlin M Drover, David R Drover, Nicholas T Ouellette, M Bruce MacIver
Nitrous oxide (N2 O) and remifentanil (remi) are used along with other anesthetic and adjuvant agents for routine surgical anesthesia, yet the electroencephalogram (EEG) changes produced by this combination are poorly described. N2 O administered alone produces EEG spectral characteristics that are distinct from most hypnotics. Furthermore, EEG frequency-derived trends before and after clinically relevant time points vary depending on N2 O concentration. Remifentanil typically increases low frequency and decreases high frequency activity in the EEG, but how it influences N2 O's EEG effect is not known...
2018: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/29859645/vitamin-b-12-deficiency-induced-neuropathy-secondary-to-prolonged-recreational-use-of-nitrous-oxide
#3
William Egan, Eric Steinberg, Jeremy Rose
A 24-year-old female, otherwise healthy, presented to the Emergency Department (ED) with difficulty walking and bilateral leg pain. The patient was a recreational nitrous oxide (NO2 ) user, also known as "whippets" or simply nitrous. Neurologic examination demonstrated an unsteady gait and positive Romberg sign along with normal deep tendon reflexes and normal muscle strength in upper and lower extremities. Laboratory results demonstrated macrocytic erythropoiesis, reduced B12 , elevated homocysteine, and elevated methylmalonic acid...
May 24, 2018: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29793567/usage-of-behavior-guidance-techniques-differs-by-provider-and-practice-characteristics
#4
Martha H Wells, Brigid A McCarthy, Chi-Hong Tseng, Clarice S Law
PURPOSE: The purpose of this study was to determine provider and practice characteristics influencing usage of behavior guidance techniques (BGTs). METHODS: A 24-item survey was emailed to 4,117 active AAPD members to identify factors influencing pediatric dentists' use of BGTs. RESULTS: A total of 1,081 surveys were returned, for a 26 percent response rate. The mean age of respondents was 44.7 years old, with recent graduates comprising the largest group (30...
May 15, 2018: Pediatric Dentistry
https://www.readbyqxmd.com/read/29790611/anesthesia-effects-on-the-low-frequency-blood-flow-oscillations-in-mouse-skin
#5
M E Astashev, D A Serov, A V Tankanag
BACKGROUND: When laboratory animals are used one needs to anesthetize them before recording. However, the influence of anesthesia on animal blood flow oscillations has not been studied. The effects of two ways of anesthesia, zoletil-xylazine, and zoletil-nitrous oxide mixtures, on mouse skin perfusion using laser Doppler flowmetry (LDF) technique were studied. METHODS: BALB/c mice were used. LDF probe was placed on the ventral surface of the left hind paw. Spectral analysis of LDF signals was performed with continuous adaptive wavelet transform to identify and describe peripheral blood flow oscillations in mouse skin...
May 23, 2018: Skin Research and Technology
https://www.readbyqxmd.com/read/29788295/intrinsic-functional-connectivity-resembles-cortical-architecture-at-various-levels-of-isoflurane-anesthesia
#6
Felix Fischer, Florian Pieper, Edgar Galindo-Leon, Gerhard Engler, Claus C Hilgetag, Andreas K Engel
Cortical single neuron activity and local field potential patterns change at different depths of general anesthesia. Here, we investigate the associated network level changes of functional connectivity. We recorded ongoing electrocorticographic (ECoG) activity from temporo-parieto-occipital cortex of 6 ferrets at various levels of isoflurane/nitrous oxide anesthesia and determined functional connectivity by computing amplitude envelope correlations. Through hierarchical clustering, we derived typical connectivity patterns corresponding to light, intermediate and deep anesthesia...
May 18, 2018: Cerebral Cortex
https://www.readbyqxmd.com/read/29744381/complications-caused-by-nitrous-oxide-in-dental-sedation
#7
REVIEW
Seong In Chi
The first clinical application of nitrous oxide (N2 O) was in 1844, by an American dentist named Horace Wells who used it to control pain during tooth extraction. Since then, N2 O has shared a 170-year history with modern dental anesthesia. N2 O, an odorless and colorless gas, is very appealing as a sedative owing to its anxiolytic, analgesic, and amnestic properties, rapid onset and recovery, and, in particular, needle-free application. Numerous studies have reported that N2 O can be used safely and effectively as a procedural sedation and analgesia (PSA) agent...
April 2018: Journal of Dental Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/29738062/-ultrasound-guided-penile-nerve-block-for-pediatric-hypospadias-surgery
#8
Neşe Türkyılmaz, Yavuz Gürkan, Sevim Cesur, Alparslan Kuş, Mine Solak
An ultrasound-guided dorsal penile nerve (DPN) block was performed for postoperative analgesia in a 6-year-old, 19 kg, American Society of Anesthesiologists class II patient undergoing hypospadias surgery. The block was applied following the induction of general anesthesia. Anesthesia maintenance was provided with sevoflurane 2% in a 1:2 ratio of oxygen and nitrous oxide. The DPN block was performed using 0.2 mL/kg of 0.25% bupivacaine. Almost 24 hours of analgesia was provided following surgery.
April 2018: Aǧrı: Ağrı (Algoloji) Derneği'nin Yayın Organıdır, the Journal of the Turkish Society of Algology
https://www.readbyqxmd.com/read/29734574/sensorineural-hearing-loss-after-spine-surgery-treated-with-hyperbaric-oxygen-therapy-two-case-reports
#9
Eric Goodrich, Richard P Goodrich, Charles A Reese
Acute idiopathic sudden sensorineural hearing loss (ISSNHL) following lumbar spinal surgery is an exceedingly rare phenomenon. This paper presents a case of ISSNHL presenting acutely after lumbar spine decompression and fusion treated with transtympanic steroids and hyperbaric oxygen (HBO₂) therapy. It also presents the ironic case of SSNHL secondary to presumed viral pathology sustained by the patient's operative surgeon who was treated with transtympanic steroids and HBO₂ as well. Proposed etiologies of the patient's ISSNHL include: hypotension, prone operative position, malfitted/malpositioned headrest, microemboli from a cell-saver, and nitrous oxide anesthesia...
March 2018: Undersea & Hyperbaric Medicine: Journal of the Undersea and Hyperbaric Medical Society, Inc
https://www.readbyqxmd.com/read/29701620/use-of-nitrous-oxide-in-dermatology-a-systematic-review
#10
Erica A Brotzman, Laura F Sandoval, Jonathan Crane
BACKGROUND: Many dermatologic procedures are painful and can be distressing to patients. OBJECTIVE: To determine whether nitrous oxide has been used in dermatology and whether literature supports its use in terms of providing analgesia and anxiety associated with dermatologic procedures. METHODS: A search of PubMed and Cochrane databases was conducted through July 15, 2016, to identify studies involving nitrous oxide use in dermatology. RESULTS: Eight studies were identified and reviewed...
May 2018: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/29622309/anesthetic-agents-commonly-used-by-oral-and-maxillofacial-surgeons
#11
REVIEW
Kyle J Kramer, Jason W Brady
Oral and maxillofacial surgeons have a variety of anesthetic agents that can be used to provide anesthesia safely and efficiently in the office-based environment. However, it is critical to have a thorough understanding of the particulars for each agent. Commonly used anesthetic agents, administered either individually or in combination, include diazepam, midazolam, propofol, ketamine, opioid agonists such as fentanyl or remifentanil, dexmedetomidine, and inhalational agents, including nitrous oxide and sevoflurane...
May 2018: Oral and Maxillofacial Surgery Clinics of North America
https://www.readbyqxmd.com/read/29580592/benchmarking-the-applicability-of-four-methods-of-endotracheal-tube-cuff-inflation-for-optimal-sealing-a-randomized-trial
#12
Georgia G Tsaousi, Chryssa Pourzitaki, Dimitra Chlorou, Konstantinos Papapostolou, Dimitrios G Vasilakos
PURPOSE: To assess the comparable applicability of four methods of endotracheal tube cuff (ETTc) inflation on the basis of optimal level of intracuff pressure and presence of intubation-related complications. DESIGN: Double-blind, randomized trial. METHODS: A total of 139 adult surgical patients scheduled to undergo nitrous oxide-free general anesthesia were assigned into one of four groups according to the method used for ETTc inflation. The cuff pressure and air volume applied in each method, and laryngotracheal complications were recorded...
April 2018: Journal of Perianesthesia Nursing: Official Journal of the American Society of PeriAnesthesia Nurses
https://www.readbyqxmd.com/read/29533264/implication-of-major-adverse-postoperative-events-and-myocardial-injury-on-disability-and-survival-a-planned-subanalysis-of-the-enigma-ii-trial
#13
W Scott Beattie, Duminda N Wijeysundera, Matthew T V Chan, Philip J Peyton, Kate Leslie, Michael J Paech, Daniel I Sessler, Sophie Wallace, Paul S Myles, W Galagher, C Farrington, A Ditoro, S Baulch, S Sidiropoulos, R Bulach, D Bryant, E O'Loughlin, V Mitteregger, S Bolsin, C Osborne, R McRae, M Backstrom, R Cotter, S March, B Silbert, S Said, R Halliwell, J Cope, D Fahlbusch, D Crump, G Thompson, A Jefferies, M Reeves, N Buckley, T Tidy, T Schricker, R Lattermann, D Iannuzzi, J Carroll, M Jacka, C Bryden, N Badner, M W Y Tsang, B C P Cheng, A C M Fong, L C Y Chu, E G Y Koo, N Mohd, L E Ming, D Campbell, D McAllister, S Walker, S Olliff, R Kennedy, A Eldawlatly, T Alzahrani, N Chua, R Sneyd, H McMillan, I Parkinson, A Brennan, P Balaji, J Nightingale, G Kunst, M Dickinson, B Subramaniam, V Banner-Godspeed, J Liu, A Kurz, B Hesler, A Y Fu, C Egan, A N Fiffick, M T Hutcherson, A Turan, A Naylor, D Obal, E Cooke
BACKGROUND: Globally, >300 million patients have surgery annually, and ≤20% experience adverse postoperative events. We studied the impact of both cardiac and noncardiac adverse events on 1-year disability-free survival after noncardiac surgery. METHODS: We used the study cohort from the Evaluation of Nitrous oxide in Gas Mixture of Anesthesia (ENIGMA-II) trial, an international randomized trial of 6992 noncardiac surgical patients. All were ≥45 years of age and had moderate to high cardiac risk...
March 12, 2018: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/29481374/can-mathematical-modeling-explain-the-measured-magnitude-of-the-second-gas-effect
#14
Ben Korman, Ranjan K Dash, Philip J Peyton
BACKGROUND: Recent clinical studies suggest that the magnitude of the second gas effect is considerably greater on arterial blood partial pressures of volatile agents than on end-expired partial pressures, and a significant second gas effect on blood partial pressures of oxygen and volatile agents occurs even at relatively low rates of nitrous oxide uptake. We set out to further investigate the mechanism of this phenomenon with the help of mathematical modeling. METHODS: Log-normal distributions of ventilation and blood flow were generated representing the range of ventilation-perfusion scatter seen in patients during general anesthesia...
June 2018: Anesthesiology
https://www.readbyqxmd.com/read/29436139/incidence-and-factors-contributing-to-postdischarge-nausea-and-vomiting-in-pediatric-ambulatory-surgical-cases
#15
Proshad N Efune, Abu Minhajuddin, Peter Szmuk
BACKGROUND: Little is known regarding the incidence and contributing factors of postdischarge nausea and vomiting in children. AIMS: The aim of this study was to determine the incidence of postdischarge nausea and vomiting in day surgery patients and to identify demographic, intraoperative, and postoperative variables that influence the risk. METHODS: In this prospective observational study, a postdischarge questionnaire was administered to parents of ambulatory patients who received anesthesia and the electronic records were reviewed...
March 2018: Paediatric Anaesthesia
https://www.readbyqxmd.com/read/29416451/which-is-better-for-pain-reduction-during-transrectal-ultrasound-guided-biopsy-of-the-prostate-intravenous-diazepam-local-periprostatic-nerve-block-or-combination-controlled-randomized-study
#16
Haisam Atta, Mohamed F Mostafa, Mahmoud Shalaby
Background: Transrectal ultrasound-guided prostate biopsy (TRUSPB) is considered the procedure of choice for the diagnosis of prostate cancer. Men undergoing this biopsy experience high psychological stress. Different studies recommend techniques as sedation, lidocaine gel intrarectally, periprostatic nerve block alone, or nitrous oxide inhalation as effective methods of analgesia during procedural-related pain or discomfort. We evaluated three techniques for pain relief during TRUSPB and evaluated if there was any increase in the incidence of complications when employing either technique...
January 2018: Saudi Journal of Anaesthesia
https://www.readbyqxmd.com/read/29384419/procedural-sedation-and-analgesia-in-trauma-patients-in-an-out-of-hospital-emergency-setting-a-prospective-multicenter-observational-study
#17
Michel Galinski, Laure Hoffman, Delphine Bregeaud, Mounir Kamboua, François-Xavier Ageron, Catherine Rouanet, Jean-Christophe Hubert, Jacques Istria, Mirko Ruscev, Karim Tazarourte, Florence Pevirieri, Frédéric Lapostolle, Frédéric Adnet
BACKGROUND: The quality of procedural analgesia and sedation among trauma patients has not been studied much in the prehospital setting. The main objective of this study was to characterize the quality of procedural analgesia sedation practices in prehospital settings in trauma patients. METHODS: This was an open-label observational prospective multicenter study (January 01, 2012-December 31, 2013). We included all consecutive trauma victims undergoing a potentially painful procedure on the accident scene...
January 31, 2018: Prehospital Emergency Care
https://www.readbyqxmd.com/read/29364232/recording-brain-electromagnetic-activity-during-the-administration-of-the-gaseous-anesthetic-agents-xenon-and-nitrous-oxide-in-healthy-volunteers
#18
Andria Pelentritou, Levin Kuhlmann, John Cormack, Will Woods, Jamie Sleigh, David Liley
Anesthesia arguably provides one of the only systematic ways to study the neural correlates of global consciousness/unconsciousness. However to date most neuroimaging or neurophysiological investigations in humans have been confined to the study of γ-Amino-Butyric-Acid-(GABA)-receptor-agonist-based anesthetics, while the effects of dissociative N-Methyl-D-Aspartate-(NMDA)-receptor-antagonist-based anesthetics ketamine, nitrous oxide (N2O) and xenon (Xe) are largely unknown. This paper describes the methods underlying the simultaneous recording of magnetoencephalography (MEG) and electroencephalography (EEG) from healthy males during inhalation of the gaseous anesthetic agents N2O and Xe...
January 13, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29359618/surgical-fires-in-otolaryngology-a-systematic-and-narrative-review
#19
Andrew T Day, Erika Rivera, Janice L Farlow, Christine G Gourin, Brian Nussenbaum
Objective To bring attention to the epidemiology, prevention, management, and consequences of surgical fires in otolaryngology by reviewing the literature. Data Sources PubMed, EMBASE, Web of Science, and Scopus. Review Methods Comprehensive search terms were developed, and searches were performed from data source inception through August 2016. A total of 4506 articles were identified; 2351 duplicates were removed; and 2155 titles and abstracts were independently reviewed. Reference review was also performed...
April 2018: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/29353903/evaluation-of-endotracheal-tube-cuff-pressure-in-laparoscopic-cholecystectomy-and-postoperative-sore-throat
#20
Gajal Lakhe, Surendra Mohan Sharma
BACKGROUND: The use of nitrous oxide and carboperitoneum in laparoscopic cholecystectomy lead to increase in endotracheal tube cuff pressure. It may impair tracheal mucosal perfusion with subsequent tracheal damage. The purpose of this study was to evaluate cuff pressure and incidence of post-operative sore throat in patients undergoing laparoscopic cholecystectomy. METHODS: In this prospective observational study, 128 patients aged 18-65 years of American Society of Anesthesiologist physical status I and II undergoing laparoscopic cholecystectomy were enrolled and allocated alternately into two groups, Study Group (Maintenance of anesthesia with sevoflurane 1-2%, oxygen/nitrous oxide mixture; 40/60), Control Group (Maintenance of anesthesia with sevoflurane 1-2%, oxygen/air mixture; 40/60) were analysed and comapared...
January 1, 2018: Journal of Nepal Health Research Council
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