[The role of computerized rheoencephalography in the assessment of normal pressure hydrocephalus. Preliminary report].

Background And Purpose: It is generally agreed that the positive result of lumbar cerebrospinal fluid (CSF) withdrawal offers a reliable means for selection of patients likely to respond to shunting in normal pressure hydrocephalus (NPH). However the studies of cerebral hemodynamics in NPH are performed Routinely only in few neurosurgical centers. We therefore studied the effect of CSF withdrawal on cerebrovascular autoregulation (CVA) in this condition by means of computerized rheoencephalography [REG].

The role of computerized rheoencephalography in the assessment of normal pressure hydrocephalus.

The aim of this study was to determine the relationship between arterial compliance derived from rheoencephalography (REG), and the slope of the regression line between pulse amplitude and mean ICP (AMP/P) recorded during a lumbar infusion study. A hypothetical link between these two variables has been suggested in the past. Resistance to the outflow of cerebrospinal fluid (R(out)) and the slope of the amplitude pressure regression line (AMP/P) were calculated in 62 patients diagnosed with posttraumatic normal pressure hydrocephalus (NPH).

[Prognostic value of computerized rheoencephalography in chronic posttraumatic subdural hematoma: a preliminary report].

Background And Purpose: The results of treatment of chronic subdural hematoma (CSDH) are still regarded as unsatisfactory. Measurements of cerebral hemodynamics are increasingly used to elucidate the pathophysiology of mental disturbances and hemiparesis in CSDH. On the other hand the clinical studies of cerebrovascular autoregulation in this condition are almost nonexistent.

[The influence of shunt surgery on the improvement of cognitive disorders in hydrocephalic patients].

We present 43 cases with cognitive disorders due to communicating hydrocephalus assessed by means of neuropshychological tests before and 4-8 months after shunt treatment. The patients were the part of the 95 hydrocephalic cases (45.3%) operated on in the period of 1993-98 at the Department of Neurosurgery in Kraków.