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Chronic neuropathic pain patients often report sleep disturbances such as reduced amount of sleep and excessive daytime tiredness. The aim of this study was to evaluate possible abnormalities in sleep patterns in a widely used animal model of neuropathic pain. Adult male Sprague-Dawley rats were chronically implanted with electrodes for electroencephalogram (EEG) and electromyogram (EMG) registrations to allow continuous 24-h polygraphic recording. Subsequently, a chronic constriction injury (CCI) was inflicted on eight rats in accordance with the CCI model of neuropathic pain and a sham operation was performed on another eight rats. The polygraphic recordings were repeated 13, 27, 55, and 146 days after surgery. Although the CCI animals developed significant mechanical and cold allodynia and heat hyperalgesia, there were no significant differences between the CCI rats and the sham-operated control animals in the spontaneous EEG/EMG in homecage-like conditions. It is concluded that in the chronic phase, this neuropathic pain model does not produce clear sleep disturbances. Such an absence of general suffering from sleep disturbances is advantageous to the CCI model as it makes use of the model more acceptable ethically. Nonetheless, this outcome appears to be in contrast with the clinical situation in neuropathic pain and therefore could also be seen as a disadvantage for the face validity of the CCI model. 相似文献
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Lemberg KK Siiskonen AO Kontinen VK Yli-Kauhaluoma JT Kalso EA 《Anesthesia and analgesia》2008,106(2):463-70, table of contents
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Background:
Fingertip injuries are extremely common. Out of the various available reconstructive options, one needs to select an option which achieves a painless fingertip with durable and sensate skin cover. The present analysis was conducted to evaluate the management and outcome of fingertip injuries.Materials and Methods:
This is a retrospective study of 150 cases of fingertip Injuries of patients aged six to 65 years managed over a period of two years. Various reconstructive options were considered for the fingertip lesions greater than or equal to 1 cm2. The total duration of treatment varied from two to six weeks with follow-up from two months to one year.Results:
The results showed preservation of finger length and contour, retention of sensation and healing without significant complication.Conclusion:
The treatment needs to be individualized and all possible techniques of reconstruction must be known to achieve optimal recovery. 相似文献110.