Lymphatic Connexions of the Subarachnoid Space
نویسندگان
چکیده
منابع مشابه
Blood in the subarachnoid space.
Blood is a potent irritant to nervous tissue and alone can cause arachnoiditis. In combination with chemical substances, the risk is magnified. This was first noted in relation to oil-based myelographic dyes by Howland and Curry ( [1] ) who found that in dogs, blood and dye together caused severe adverse effects. Hence dural puncture during epidural administration of drugs should be treated ser...
متن کاملThe probability of neural connexions
J In some areas of a nervous system there is no obvious plan of connexions. I f it is assumed, first, that in these areas fibre growth is random, and secondly, that connexions are formed if axon and dendrite approach within a critical distance, there are certain mathematical consequences. If fibre density is defined and measured in a particular way it is possible to derive a formula for the ave...
متن کاملAnesthetic Solutions within the Subarachnoid Space
Uptake of local anesthetics injected into the subarachnoid space determines which neuronal functions are affected during spinal anesthesia. Elimination of local anesthetics from the subarachnoid space determines the duration of these effects. Distribution of local anesthetics within cerebrospinal fluid (CSF) determines the extent of altered neuronal function. Uptake and elimination have been re...
متن کاملAssessing the depth of the subarachnoid space by ultrasound.
BACKGROUND AND OBJECTIVES To assess the accuracy of the ultrasound (US) to predict the depth to reach lumbar intrathecal and epidural spaces in order to decrease the number of puncture attempts. METHODS Thirty-one patients (25 males and 6 females), ASA I or II participated in this study. The transversal ultrasound image of the lumbar spine was obtained at the level of the L3-L4 space. An anes...
متن کاملThe kinetics of lymphocyte subsets and macrophages in subarachnoid space after subarachnoid hemorrhage in rats.
BACKGROUND AND PURPOSE Although it has been suggested that humoral immunity plays a role in the pathogenesis of cerebral vasospasm after subarachnoid hemorrhage, there has been no quantitative assay for cellular immunity. We studied the kinetics of immune cells in the subarachnoid space after subarachnoid hemorrhage in the rat. METHODS One hundred fourteen Sprague-Dawley rats were used in thi...
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ژورنال
عنوان ژورنال: BMJ
سال: 1948
ISSN: 0959-8138,1468-5833
DOI: 10.1136/bmj.1.4563.1167