Summary
Cerebral vasospasm with subsequent infarction gives important influence to the prognosis of patients with ruptured intracranial aneurysms. Many factors should be considered in the pathogenesis of cerebral infarction. Clinical and experimental studies of intravascular components with particular reference to platelet and coagulation factors were performed. Both studies revealed systemic platelet hyperactivity and a hypercoagulable state; in further experimental studies, crenated red blood cells were recognized in the course of cerebral vasospasm. These systemic changes of intravascular components are thought to accelerate cerebral ischemia through formation of microthrombosis, increased blood viscosity and reduced deformability of the red blood cells.
Zusammenfassung
Zerebrale Gefäßspasmen mit nachfolgendem Infarkt haben großen Einfluß auf die Prognose von Patienten mit Aneurysmarupturen. In der Pathogenese von Hirninfarkten müssen viele Faktoren berücksichtigt werden.
Hier werden klinische und experimentelle Untersuchungen intravaskulärer Faktoren vorgenommen, besonders der Blutplättchen und der Gerinnungsfaktoren. Sie ergaben eine Hyperaktivität des Blutplättchensystems und eine Hyperkoagulabilität. In weiteren Untersuchungen wurden geschrumpfte rote Blutkörperchen im Verlauf von Gefäßspasmen gefunden. Es wird angenommen, daß diese systemischen Veränderungen intravaskulärer Faktoren durch Bildung von Mikrothromben, erhöhte Blutviskosität und verminderte Verformbarkeit der Erythrozyten eine zerebrale Ischaemie beschleunigen.
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Dedicated to Professor Dr. K. J. Zülch on the occasion of his 70th birthday.
This paper was presented in part at the Annual Meeting of the American Association of Neurological Surgeons in Los Angeles in April 1979.
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Hasegawa, T., Watanabe, H. & Ishii, S. Studies of intravascular components in cerebral vasospasm following subarachnoid hemorrhage. Neurosurg. Rev. 3, 93–100 (1980). https://doi.org/10.1007/BF01644061
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DOI: https://doi.org/10.1007/BF01644061