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Biomedical subjects

A A Zaretsky

Publications and source records attributed to A A Zaretsky.

2 recordsLinked to original sources

Ultrasound microneurosurgery.

This work focuses on the use of an ultrasound neurosurgical unit which includes frequency generator and acoustic converter with different types of surgical attachments according to the surgical peculiarity. These attachments were designed to be used for ultrasonic resection, ultrasonic aspiration, ultrasonic disintegration and other applications. High cutting ability, possibility of local disintegration, specific hemostatic effects and other benefits of ultrasonic surgical tools (in the experimental level) were behind the efforts to create the ultrasound microneurosurgical unit with different attachments of cutting, disintegration, aspiration and separation tools. We used the ultrasound microneurosurgical unit during 299 operations involving meningiomas; acoustic neurinomas; gliomas; hordomas; pituitary adenomas; craniopharyngiomas; tuberculoma; paroxysmal pain in the patients with brachial plexus injuries, facial pain, phantom limb pain, intercostal neuralgia, post-mastectomy syndrome, syringomyelia and tumors of nerve trunks. The experience of using the surgical instruments based on ultrasound oscillation of the working edge showed their high efficiency and good perspective in experimental research as well as in practical application in different ramifications of surgery.

Adolescent↗

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↗