[Cerebral angiospasm in subarachnoid hemorrhages]

Publications on the prevalence and causes of subarachnoid hemorrhages (SAH) and one of the most frequent their complications, cerebral vasospasm (CV), are reviewed. The issues of the pathogenesis and pathophysiology of CV in SAH are covered, basic methods of its clinical and paraclinical verification are described. The authors reviewed the reasons of the discrepancy between clinically significant and angiographic vasoconstrictive reactions. The angiographic criteria of ranking angiospasm by the degree of its severity are described. Strengths and limitations of current methods of detection CV and its combinations are reviewed. The special attention is drawn to ultrasound criteria that allow to confirm the presence of CV and evaluate its severity, the reasons of present interpretative and factological inconsistencies are analyzed. The conclusions based on the literature reviewed are presented.