[Cerebral hemodynamics in the acute and remote periods of closed cranio-cerebral trauma]. / Osobennosti tserebral'noi gemodinamiki v ostrom i otdalennom periodakh zakrytoi cherepno-mozgovoi travmy

By using clinical and zonal REG methods the authors examined 204 patients with brain traumas. Such examinations permitted to detect symptoms of a disturbed cerebral vascular tone. In the acute period of a closed brain trauma changes of cerebral hemodynamics were not stable and were nonhomogenous by direction. A differential qualification of the general and cerebral hemodynamics in the remote period of a closed brain trauma permitted to distinguish 4 types of cerebral vascular disorders. The obtained results facilitate an objective assessment of brain traumas and their pathogenetical treatment.

[The action of ionizing radiation on the central nervous system (based on clinical and polymodal evoked potential data)]. / Vozdeistvie ioniziruiushchego izlucheniia na tsentral'nuiu nervnuiu sistemu (po dannym kliniki i polimodal'nykh vyzvannykh potentsialov).

A clinical examination was done as was an investigation into polymodal evoked potentials (EP) of the brain in the group of 123 liquidators of the accident (LA) to the N 4 reactor unit of the Chernobyl nuclear power station. There was a steady decrease in the amplitude of auditory EP of the brain stem (AEPBS), somatosensory EP, visual EP and a great lengthening of latent periods (LP) of late cortical components H200, II300, H400. LP AEPBS appeared to be intact in 91.5% LA. Correlation was established between the hemodynamic and neurodynamic disorders suggesting to us that further postradiation nosology is brought about by morbid neuronal pattern, the formation of which is determined not only by radiation exposure but acquires the character of a multivariate process.