[Prognosis of transient disorders of cerebral circulation and risk factors in the development of stroke].

The paper is concerned with the results of a study of 140 patients who had had transient disorders of cerebral circulation. Among these cases 47 were subjected to a prospective observation and 93 to a retrospective one. The authors analyse 32 possible risk factors of brain stroke in patients with transient disorders of cerebral circulation. Their mathematical processing was accomplished with the aid of correlational coefficients and conditioned probabilities, detecting the highest pathogenic importance of these factors (such as disturbance of the rhythm of cardiac activity, arterial hypertension higher than 190 mm, etc). A mathematical evaluation and combination of factors was made. It was demonstrated that there is a diminution of the risk of development of ischemic stroke with development of parkinsonism in patients with transient disorders of cerebral circulation. The authors give recommendations for prophylactic treatment in order to prevent strokes in this group of patients.