Journal
NEUROREPORT
Volume 13, Issue 18, Pages 2553-2556Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/00001756-200212200-00034
Keywords
animal models; rat; subarachnoid hemorrhage
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A new experimental model of subarachnoid hemorrhage (SAH) in rats is described. A needle was stereotaxically placed in the pre-chiasmatic cistern and 300, 250 or 200 mul of blood was injected manually, keeping the intracranial pressure (ICP) at the mean arterial blood pressure (MABP) level. An acceptable mortality was observed only after injection of 200 mul of blood. In this group, MABP and ICP increased immediately after SAH, but soon approached baseline levels. The subarachnoid blood was mainly distributed in the basal cisternal system and its estimated volume was about 95% of the amount injected. This new model resembles clinical SAH, is very reproducible, easy to use and seems to be a suitable model for studies of the pathophysiology of SAH.
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