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  • Title: Low degree of anesthesia increases the risk of neurogenic pulmonary edema development.
    Author: Sedý J, Likavcanová K, Urdziková L, Zicha J, Kunes J, Hejcl A, Jendelová P, Syková E.
    Journal: Med Hypotheses; 2008; 70(2):308-13. PubMed ID: 17693037.
    Abstract:
    Neurogenic pulmonary edema is an acute life-threatening complication following central nervous system injury. The exact pathogenic mechanism leading to its development is still unclear. We introduce a new hypothesis that high levels of anesthesia might protect the organism against the development of neurogenic pulmonary edema due to a more pronounced inhibition of the hypothalamic, brainstem and spinal vasoactive sympathetic centers. On the basis of a more pronounced neuronal inhibition of the vasoactive centers, a severe sympathetic discharge does not occur and neurogenic pulmonary edema does not develop. In contrast, an insufficient anesthesia level is not able to inhibit the sympathetic nervous system during an injury of the central nervous system and thus neurogenic pulmonary edema develops. During experiments with central nervous system injury, low-anesthesia-induced neurogenic pulmonary edema might negatively influence the overall recovery of the animal. More importantly, during a neurosurgical intervention, insufficient anesthesia might similarly lead to neurogenic pulmonary edema development in operated patients. Our hypothesis indicates the necessity of precisely monitoring of the level anesthesia during experimental manipulations of the central nervous system in animals or neurosurgical interventions in humans.
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