keyword
https://read.qxmd.com/read/17597416/detection-of-carbon-monoxide-production-as-a-result-of-the-interaction-of-five-volatile-anesthetics-and-desiccated-sodalime-with-an-electrochemical-carbon-monoxide-sensor-in-an-anesthetic-circuit-compared-to-gas-chromatography
#21
COMPARATIVE STUDY
Christiaan Keijzer, Roberto S G M Perez, Jaap J de Lange
OBJECTIVES: There is a continuing risk of production of toxic levels of carbon monoxide (CO) as a result of interaction of volatile anesthetics and desiccated strong base carbon dioxide absorbents like soda lime. The aim of this study is to establish the reliability of detection of CO levels by an electrochemical carbon monoxide sensor compared to gas chromatography. METHODS: Completely desiccated sodalime was conducted through a circle anesthesia system connected to an artificial lung...
August 2007: Journal of Clinical Monitoring and Computing
https://read.qxmd.com/read/17580185/renal-safety-and-extrahepatic-defluorination-of-sevoflurane-in-hepatic-transplantations
#22
JOURNAL ARTICLE
M Kanbak, A H Karagoz, N Erdem, B Oc, F Saricaoglu, N Ertas, A Berkkan, O Abbasoglu, U Aypar
BACKGROUND: The main metabolic pathway for defluorination of sevoflurane in the liver produces inorganic fluoride (Fl). The metabolism and effect of sevoflurane on the kidney is not clear during anhepatic phase in liver transplantation. The goal of the present study was to investigate the metabolism and renal effect of sevoflurane by measuring plasma and urine inorganic fluoride, urinary N-acetyl-glucosaminidase (NAG), and plasma creatinine levels in patients undergoing liver transplantations...
June 2007: Transplantation Proceedings
https://read.qxmd.com/read/16390562/partial-liquid-ventilation-effects-of-closed-breathing-systems-heat-and-moisture-exchangers-and-sodalime-absorbers-on-perfluorocarbon-evaporation
#23
JOURNAL ARTICLE
C T Wilms, P Schober, R Kalb, S A Loer
BACKGROUND AND OBJECTIVES: During partial liquid ventilation perfluorocarbons are instilled into the airways from where they subsequently evaporate via the bronchial system. This process is influenced by multiple factors, such as the vapour pressure of the perfluorocarbons, the instilled volume, intrapulmonary perfluorocarbon distribution, postural positioning and ventilatory settings. In our study we compared the effects of open and closed breathing systems, a heat-and-moisture-exchanger and a sodalime absorber on perfluorocarbon evaporation during partial liquid ventilation...
January 2006: European Journal of Anaesthesiology
https://read.qxmd.com/read/15954965/carbon-monoxide-production-from-desflurane-and-six-types-of-carbon-dioxide-absorbents-in-a-patient-model
#24
COMPARATIVE STUDY
C Keijzer, R S G M Perez, J J de Lange
BACKGROUND: Desflurane is known to produce high concentrations of carbon monoxide (CO) in desiccated sodalime or Baralyme (Allied Healthcare Products, St. Louis, MO). Desiccated absorbents without strong bases like potassium hydroxide or sodium hydroxide are reported to produce less or no CO at all. The purpose of this study is to compare the concentration of CO in an anesthesia circuit for desflurane with six different types of completely desiccated CO(2) absorbents with less strong bases than sodalime...
July 2005: Acta Anaesthesiologica Scandinavica
https://read.qxmd.com/read/15932634/carbon-monoxide-production-from-five-volatile-anesthetics-in-dry-sodalime-in-a-patient-model-halothane-and-sevoflurane-do-produce-carbon-monoxide-temperature-is-a-poor-predictor-of-carbon-monoxide-production
#25
Christiaan Keijzer, Roberto Sgm Perez, Jaap J De Lange
BACKGROUND: Desflurane and enflurane have been reported to produce substantial amounts of carbon monoxide (CO) in desiccated sodalime. Isoflurane is said to produce less CO and sevoflurane and halothane should produce no CO at all.The purpose of this study is to measure the maximum amounts of CO production for all modern volatile anesthetics, with completely dry sodalime. We also tried to establish a relationship between CO production and temperature increase inside the sodalime. METHODS: A patient model was simulated using a circle anesthesia system connected to an artificial lung...
June 2, 2005: BMC Anesthesiology
https://read.qxmd.com/read/15825711/comparison-of-effectiveness-between-gas-flow-1-and-2-l-min-1-for-general-anesthesia-in-infants-and-children
#26
RANDOMIZED CONTROLLED TRIAL
Suwannee Suraseranivongse, Sumitra Chowvanayotin, Sangsom Pirayavaraporn, Songyos Valairucha, Naiyana Arunpruksakul, Somsak Areewatana
OBJECTIVES: To determine 1) Success rate of using fresh gas flow (FGF) 1 l.min(-1) compared to 2 l.min(-1) in pediatric patients 2) Necessity of using anesthetic agent analyzer 3) predicting volatile anesthetic concentration 4) cost difference. METHOD: Seventy-seven patients (age 10 days to 8 years) who underwent general anesthesia were randomly allocated into 2 groups: the control group (FGF 2 l.min(-1)) and the study group (FGF 1 l.min(-1)). Outcome measures included system leakage, SaO2, PECO2, FiO2, Fi and FeN2O, isoflurane dial setting, Fi and Fe isoflurane, isoflurane mass consumed and sodalime used...
November 2004: Journal of the Medical Association of Thailand
https://read.qxmd.com/read/11753018/comparison-of-amsorb-sodalime-and-baralyme-degradation-of-volatile-anesthetics-and-formation-of-carbon-monoxide-and-compound-a-in-swine-in-vivo
#27
COMPARATIVE STUDY
Evan D Kharasch, Karen M Powers, Alan A Artru
BACKGROUND: Consequences of volatile anesthetic degradation by carbon dioxide absorbents that contain strong base include formation of compound A from sevoflurane, formation of carbon monoxide (CO) and CO toxicity from desflurane, enflurane and isoflurane, delayed inhalation induction, and increased anesthetic costs. Amsorb (Armstrong Ltd., Coleraine, Northern Ireland) is a new absorbent that does not contain strong base and does not form CO or compound A in vitro. This investigation compared Amsorb, Baralyme (Chemetron Medical Division, Allied Healthcare Products, St...
January 2002: Anesthesiology
https://read.qxmd.com/read/11381692/near-point-source-longitudinal-and-transverse-mode-ultrasonic-arrays-for-material-characterization
#28
JOURNAL ARTICLE
M Mah, D R Schmitt
Specially constructed near point-source ultrasonic transducers (0.75 MHz) were designed to preferentially stimulate and receive the one longitudinal (P) and two transverse (S) propagation modes. Arrays of these transducers were placed on a rectangular prism of common sodalime glass, which served as an ideal homogeneous, isotropic medium, to evaluate the uncertainty of a newly developed phase velocity measurement method. Through the use of the Radon transform, the data were transformed from the offset-time (x-t) domain to the intercept time--horizontal slowness (tau-p) domain...
May 2001: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://read.qxmd.com/read/11020762/in-vitro-compound-a-formation-in-a-computer-controlled-closed-circuit-anesthetic-apparatus-comparison-with-a-classical-valve-circuit
#29
COMPARATIVE STUDY
L F Versichelen, G Rolly, M P Bouche, J F Van Bocxlaer, M M Struys, C Van Der Herten, A P De Leenheer, E P Mortier
BACKGROUND: Few data exist on compound A during sevoflurane anesthesia when using closed-circuit conditions and sodalime with modern computer-controlled liquid injection. METHODS: A PhysioFlex apparatus (Dräger, Lübeck, Germany) was connected to an artificial test lung (inflow approximately 160 ml/min carbon dioxide, outflow approximately 200 ml/min, simulating oxygen consumption). Ventilation was set to obtain an end-tidal carbon dioxide partial pressure (Petco2) approximately 40 mmHg...
October 2000: Anesthesiology
https://read.qxmd.com/read/9451491/-various-reactions-of-sevoflurane-with-the-individual-components-of-soda-lime
#30
JOURNAL ARTICLE
H Förster, U H Warnken, F Asskali
The various components of commercial soda lime (sodium hydroxide, potassium hydroxide, calcium hydroxide, barium hydroxide) were studied in terms of their reactivity with sevoflurane at its boiling point (59 degrees C). A simple closed system, a reflux cooler, served as a model. Analyses were performed by GC/MS. Besides sevoflurane, we identified four compounds: A, B, C, and D. Free methanol, formaldehyde and formic acid could not be found. Presumably methanol is transferred from an intermediate formalin-semiacetal of the hexafluorisopropanol...
December 1997: Der Anaesthesist
https://read.qxmd.com/read/7933505/-differential-reactivities-of-three-kinds-of-carbon-dioxide-absorbents-with-high-concentration-of-sevoflurane
#31
JOURNAL ARTICLE
M Nakazawa, K Miyano, K Toriumi, Y Tanifuzi
The differential reactivities of three kinds of carbon dioxide absorbents, sodalime, Sodalime A and Baralyme with 5% sevoflurane were investigated in a closed system under administration of 5% carbon dioxide. The degradation products in the closed system were determined by gas chromatography and the temperature of the glass container which was filled with each carbon dioxide absorbent was monitored. The degradation products, P1, P3 and P5 were produced by every carbon dioxide absorbents even after one-hour circulation...
August 1994: Masui. the Japanese Journal of Anesthesiology
https://read.qxmd.com/read/3583805/decomposition-of-sevoflurane-by-sodalime
#32
JOURNAL ARTICLE
C Hanaki, K Fujii, M Morio, T Tashima
No abstract text is available yet for this article.
March 1987: Hiroshima Journal of Medical Sciences
https://read.qxmd.com/read/2384957/-reaction-products-of-sevoflurane-with-new-soda-lime-a-under-various-conditions
#33
JOURNAL ARTICLE
M Kudo, T Kudo, A Matsuki
Sevoflurane is reported to react with sodalime, a common carbon dioxide absorber which resolves into several products. We measured the reaction products of sevoflurane when this anesthetic reacted with sodalime-A, a new carbon dioxide absorber under various conditions. Analysis of reaction products was done by gas chromatography using a 2 m column packed with DOP. Six peaks including sevoflurane were detected on the gas chromatogram of sevoflurane after reaction with sodalime-A and five reaction products were obtained...
May 1990: Masui. the Japanese Journal of Anesthesiology
https://read.qxmd.com/read/2304250/-reaction-products-of-sevoflurane-with-components-of-sodalime-under-various-conditions
#34
JOURNAL ARTICLE
M Kudo, T Kudo, T Oyama, A Matsuki
Sevoflurane is reported to react with sodalime to resolve into several products. We examined the reaction products of sevoflurane when this anesthetic reacted with components of sodalime under various conditions. Analysis of reaction products was performed by gas chromatography using a 2m column packed with DOP. Six peaks including sevoflurane were detected on the gas chromatogram of sevoflurane after reaction with sodalime and five reaction products were obtained. These peaks were from P1 with the shortest retention time to P5 with the longest retention time...
January 1990: Masui. the Japanese Journal of Anesthesiology
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