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  • 1
    Electronic Resource
    Electronic Resource
    Accumulation of thymol in halothane vaporizers (1984)
    Oxford, UK : Blackwell Publishing Ltd
    Anaesthesia 39 (1984), S. 0 
    Details
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Thymol may accumulate in halothane vaporizers and influence their accuracy. We determined the thymol concentration in residual liquid halothane of 28 vaporizers in regular use. Two halothane samples were brownish, probably due to a long exposure to light and irregular drainage. Irregularly drained vaporizers contained higher thymol concentrations than those drained weekly (p 〈 0.05). The highest individual thymol concentration was 19 times that found in fresh halothane. Halothane vapour concentration deviated most from setting in Fluotec Mark II vaporizers, but this did not correlate with thymol concentrations in halothane liquid. The need for weekly drainage and regular service of halothane vaporizers is stressed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2044.1984.tb07367.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Melatonin, cortisol and body temperature rhythms in Lennox-Gastaut patients with or without circadian rhythm sleep disorders (1993)
    Springer
    Journal of neurology 240 (1993), S. 410-416 
    Details
    ISSN: 1432-1459
    Keywords: Circadian rhythms ; Pineal gland ; Adrenal gland ; Epilepsy ; Mental retardation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The daily rhythms of melatonin, cortisol and body temperature were studied in 16 institutionalized subjects with the Lennox-Gastaut syndrome. The results of 9 subjects with normal daily rhythms of sleep and wakefulness (group 1) were compared with those of 7 subjects with disordered sleep (group 2). Salivary samples were collected and axillary temperature was measured every 2 h during two or three separate 26-h periods. The hormones were measured by radioimmunoassays. The rhythms were characterized with single cosinor analysis. Two subjects in group 1 and six subjects in group 2 had abnormalities in their rhythms of temperature, cortisol or melatonin. All three rhythms were disrupted in two subjects of group 2. These two subjects were the only ones with disrupted cortisol rhythm. The diversity of rhythm pathologies suggested partly separate regulatory mechanisms for each rhythm. The co-occurrence of circadian rhythm sleep disorders with the deteriorated melatonin rhythm raised the question as to whether the sleep disorders of these subjects, like those of subjects with healthy brains, could be relieved by the induction of normal melatonin rhythm.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00867353
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    REM sleep deprivation increases early morning pineal melatonin in castrated rats
    Amsterdam : Elsevier
    Behavioral and Neural Biology 51 (1989), S. 237-246 
    Details
    ISSN: 0163-1047
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Psychology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/S0163-1047(89)90872-8
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    Paper (German National Licenses)
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