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J. Cereb. Blood Flow Metab. · Feb 2012
CommentCortical spreading ischemia in the absence of proximal vasospasm after aneurysmal subarachnoid hemorrhage: evidence for a dual mechanism of delayed cerebral ischemia.
- Anthony J Strong and R Loch Macdonald.
- King's College London, Department of Clinical Neuroscience, Institute of Psychiatry, London, UK. anthony.strong@kcl.ac.uk
- J. Cereb. Blood Flow Metab. 2012 Feb 1; 32 (2): 201-2.
AbstractThere are longstanding inconsistencies in the evidence thought to link vasospasm in the major branches of the Circle of Willis with delayed cerebral ischemia and poor outcome from aneurysmal subarachnoid hemorrhage (aSAH). The demonstrations, first in the laboratory, and more recently in patients with aSAH, of cortical spreading ischemia based on an abnormal response of the cerebral microcirculation to spreading depolarization offer an additional possible mechanism for delayed ischemia. That such events can occur in the substantial absence of proximal vasospasm is compatible with this concept, but the preliminary evidence needs support from more extensive studies.
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