Journal of neurosurgical anesthesiology
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J Neurosurg Anesthesiol · Oct 2015
ReviewNoninvasive Brain Physiology Monitoring for Extreme Environments: A Critical Review.
Our ability to monitor the brain physiology is advancing; however, most of the technology is bulky, expensive, and designed for traditional clinical settings. With long-duration space exploration, there is a need for developing medical technologies that are reliable, low energy, portable, and semiautonomous. Our aim was to review the state of the art for noninvasive technologies capable of monitoring brain physiology in diverse settings. ⋯ Most of the technologies lack the accuracy seen in gold standard measures, due to the need for calibration, but may be useful for screening or monitoring relative changes in a parameter. Most of the technologies use ultrasound or electromagnetic radiation as energy sources. There is an important need for further development of portable technologies that can be operated in a variety of extreme environments to monitor brain health.
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J Neurosurg Anesthesiol · Oct 2015
The Effects of Flumazenil After Midazolam Sedation on Cerebral Blood Flow and Dynamic Cerebral Autoregulation in Healthy Young Males.
It is unknown whether flumazenil antagonizes the decrease in cerebral blood flow or the alteration in dynamic cerebral autoregulation induced by midazolam. We, therefore, investigated the effects on cerebral circulation of flumazenil administered after midazolam, to test our hypothesis that, along with complete reversal of sedation, flumazenil antagonizes the alterations in cerebral circulation induced by midazolam. ⋯ Contrary to our hypothesis, the present results suggest that despite complete antagonism of the sedative effects of midazolam, flumazenil would not reverse the alterations in cerebral circulation induced by midazolam.
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J Neurosurg Anesthesiol · Oct 2015
Changes in Energy Levels by Dexamethasone in Ischemic Hearts and Brains in Male Mice.
Glucocorticoids have been shown to alleviate ischemia-induced myocardial injury, while aggravating neuronal damage caused by ischemia. As energy failure is a predominant factor in cellular viability, we examined the effects of glucocorticoids on energy utilization in the mouse heart and brain. ⋯ The relationship between effects of glucocorticoids on ischemia-induced changes in energy levels and cellular viability was not clearly elucidated.