Abstract
Several clinical grading systems of aneurysmal subarachnoid exist and play a critical role in predicting outcome and grouping patients according to degree of injury to evaluate the efficacy of both surgical and medical interventions. Only one grading system is published for experimental aneurysmal subarachnoid hemorrhage, and has yet to be widely adopted. Without the ability to quantify the degree of injury in experimental groups, it is impossible to know the effects of intervention. The quantification of subarachnoid blood in experimental models will be most useful for the endovascular perforation model, which has been criticized for the lack of control over bleeding. This chapter outlines the simple and objective SAH grading system previously published by our group. This grading system was validated in Sprague Dawley rats, but has the potential to be adapted to other aneurysmal SAH models.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsReferences
Bederson JB, Germano IM, Guarino L (1995) Cortical blood flow and cerebral perfusion pressure in a new noncraniotomy model of subarachnoid hemorrhage in the rat. Stroke 26(6):1086–1091
Chen J (2008) Animal models of acute neurological injury, 1st edn. Humana
Zhou ML, Shi JX, Zhu JQ et al (2007) Comparison between one- and two-hemorrhage models of cerebral vasospasm in rabbits. J Neurosci Methods 159(2):318–324
Gules I, Satoh M, Clower BR, Nanda A, Zhang JH (2002) Comparison of three rat models of cerebral vasospasm. Am J Physiol Heart Circ Physiol 283(6):H2551–H2559
Prunell GF, Mathiesen T, Diemer NH, Svendgaard NA (2003) Experimental subarachnoid hemorrhage: subarachnoid blood volume, mortality rate, neuronal death, cerebral blood flow, and perfusion pressure in three different rat models. Neurosurgery 52(1):165–175
Neff S (2000) In vivo animal models of cerebral vasospasm: a review. Neurosurgery 47(3):794–795
Megyesi JF, Vollrath B, Cook DA, Findlay JM (2000) In vivo animal models of cerebral vasospasm: a review. Neurosurgery 46(2):448–460
Hunt WE, Hess RM (1968) Surgical risk as related to time of intervention in the repair of intracranial aneurysms. J Neurosurg 28(1):14–20
(1988) Report of World Federation of Neurological Surgeons Committee on a universal subarachnoid hemorrhage grading scale. J Neurosurg 68(6):985–986
Kramer AH, Hehir M, Nathan B et al (2008) A comparison of 3 radiographic scales for the prediction of delayed ischemia and prognosis following subarachnoid hemorrhage. J Neurosurg 109(2):199–207
Sugawara T, Ayer R, Jadhav V, Zhang JH (2008) A new grading system evaluating bleeding scale in filament perforation subarachnoid hemorrhage rat model. J Neurosci Methods 167(2):327–334
Garcia JH, Wagner S, Liu KF, Hu XJ (1995) Neurological deficit and extent of neuronal necrosis attributable to middle cerebral artery occlusion in rats. Statistical validation. Stroke 26(4):627–634
Barry KJ, Gogjian MA, Stein BM (1979) Small animal model for investigation of subarachnoid hemorrhage and cerebral vasospasm. Stroke 10(5):538–541
Ayer R, Chen W, Sugawara T, Suzuki H, Zhang JH (2010) Role of gap junctions in early brain injury following subarachnoid hemorrhage. Brain Res 1315:150–158
Sugawara T, Jadhav V, Ayer R, Chen W, Suzuki H, Zhang JH (2009) Thrombin inhibition by argatroban ameliorates early brain injury and improves neurological outcomes after experimental subarachnoid hemorrhage in rats. Stroke 40(4):1530–1532
Ayer RE, Sugawara T, Chen W, Tong W, Zhang JH (2008) Melatonin decreases mortality following severe subarachnoid hemorrhage. J Pineal Res 44(2):197–204
Sugawara T, Ayer R, Jadhav V, Chen W, Tsubokawa T, Zhang JH (2008) Simvastatin attenuation of cerebral vasospasm after subarachnoid hemorrhage in rats via increased phosphorylation of Akt and endothelial nitric oxide synthase. J Neurosci Res 86(16):3635–3643
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2012 Springer Science+Business Media, LLC
About this protocol
Cite this protocol
Ayer, R., Sugawara, T., Zhang, J.H. (2012). Aneurysmal Subarachnoid Hemorrhage Grading in Animal Models. In: Chen, J., Xu, XM., Xu, Z., Zhang, J. (eds) Animal Models of Acute Neurological Injuries II. Springer Protocols Handbooks. Humana Press, Totowa, NJ. https://doi.org/10.1007/978-1-61779-576-3_21
Download citation
DOI: https://doi.org/10.1007/978-1-61779-576-3_21
Published:
Publisher Name: Humana Press, Totowa, NJ
Print ISBN: 978-1-61779-575-6
Online ISBN: 978-1-61779-576-3
eBook Packages: Springer Protocols