Effect of reducing uteroplacental blood flow on movements and on electrocortical activity of fetal sheep.
Eight chronically instrumented fetal sheep were asphyxiated for 1 h by partial occlusion of the uterine blood supply. Fetal movements, as reflected by phasic activity in the nuchal electromyogram, decreased during the period of asphyxia. Tonic activity also decreased. The proportion of time spent in high-voltage electrocortical activity increased. Following release of the occlusion movements returned rapidly to the level present during the control period. The distribution of electrocortical activity patterns during the recovery period was similar to that during the control period.
INTRODUCTION ::: The aim of this study was to determine whether the new robot hand technique can help to avoid the complication in the course of high precise microneurosurgical operations. ::: ::: ::: METHODS ::: The physical efficacy was measured by tremorometry. The comparative study of the incidence of complications measured the clinical efficacy. ::: ::: ::: RESULTS ::: The tremors of the operating hand and the number of complications have decreased effectively. ::: ::: ::: CONCLUSION ::: The precise level of robots could be available by novel robot hand technique. By this technique the microsurgical work has become more effective.