S A Shesterikov | PubMed Health

PubMed1983

Brain stem auditory evoked potentials: reduction of evaluation errors.

The commonly used method of BAER evaluation is measuring the latency to the extreme points of the components. Because of the influence of noise it is sometimes impossible to determine precisely the true top of the peak. It is possible to avoid this defect by estimating the latency to the middle of the peak front. In this research S.D.s for both methods of evaluation were calculated for all interpeak intervals. According to the obtained data the use of the middle of the front of the peak for the latency evaluation gave 24% reduction in S.D.s.

Adolescent↗

PubMedDate not supplied

[Diagnosis and microsurgical treatment of discogenic lumbosacral radiculitis].

The literature data and the authors' experience in the treatment of 50 patients showed that the level and character of damage inflicted to the spinal cord roots by Schmorl's body can be determined with the precision necessary for performing a microsurgical intervention only on the basis of a diagnostic complex including scrupulous neurological, X-ray, and electrophysiological examination. The authors show the diagnostic value of studying the somatosensory evoked potentials in stimulation of the corresponding dermatomes (L4, L5 or S1), which reflect the primary side of the affection and, to a lesser degree, the level of Schmorl's body. The microsurgical techniques of exposing the spinal cord root compressed by Schmorl's body was carefully developed and described. Attention is focused on the necessity of using the appropriate microsurgical instruments and placing the patient in an adequate position on the operating table.

Adult↗