[Role of arterio-arterial embolisms in the pathogenesis of cerebral circulatory disorders].

The authors studied 52 patients with brain infarctions and transient disorders of cerebral circulation, which in the opinion of the authors developed as a result of arterio-arterial embolism. Besides, 16 post-mortem cases with arterio-arterial embolism were studied as well. On the basis of clinico-angiographical, clinico-laboratory and clinico-anatomical correlations, the authors come to the conclusion that this mechanism is frequently the main link in the pathogenesis of distrubed cerebral circulation. Embologenic materials in the development of brain infarctions are most often particles of parietal or obturating thrombi in the magistral cerebral vessels. In patients with transient disorders of cerebral circulation most likely embolism of the minor cerebral vessels by thrombocytic aggregates. The authors discuss the functional properties of thrombocytes in the pathogenesis of transient disorders of cerebral circulation and the feasibility of the use of antiaggregates for preventive purposes.