Two once-weekly intravenous injections of the polyethylene oxide Polyox WSR-301 (yielding a blood concentration of the order of 5• .6 g/ml) led to a 38% decrease in the area occupied by sudanophilic lesions in the aortic arch of rats fed an atherogenic diet for two weeks. Perfusion under constant pressure of the formalin-fLxed vascular system in the posterior part of the body with physiological saline and then with polyethylene oxide (10 -s g/ml) was without effect in normal rats and in those with mild lipoidosis, but reduced hydrodynamic vascular resistance by 9-14.5% in rats with pronounced lipoidosis. Intravenous injection of polyethylene oxide into anesthetized rats with pronounced lipoidosis in doses that were subthreshold for normal rats (blood concentrations of the polymer were of the order of 10 -7 g/ml) caused a 20% decrease in the total peripheral resistance to blood flow, with a 17-20% rise of the blood flow rate in the carotid artery.

Background: Current studies contain controversies regarding indications and preferable surgical techniques for arachnoid cysts. Case Description: In this paper we present case report of giant arachnoid cyst of right frontal lobe in young left-handed adult with headache, MRI sings of brain compression and epileptiform activity on EEG, treated by microsurgical cystostomy. Conclusion: We add a case of young adult with tension headaches and possible sub-clinical seizures due to arachnoid cyst, whose symptoms disappeared after surgical management of the cyst, including normalization of EEG.

Introduction. Distal radius fracture is the most frequent fracture in humans. Most authors recommend surgical treatment for intraarticular fracture. A large number of different methods of surgical treatment have been proposed. However, in the long-term treatment no significant superiority of any one method over others has been statistically revealed. Objectives. To study the results of using of Ilizarov external fixation as primary fixation (first step treatment) for the period from injury to final ORIF with a volar locked plate. Patients and methods. The study is based on the analysis of the results of surgical treatment of 81 patients with multifragmentary intraarticular distal radius fractures. These fractures are considered unstable and conservative treatment is not preferred. Patients were divided into 2 groups of 41 and 40 people. In patients of the first group (control group), at the first stage, a closed reduction was applied followed by preoperative immobilization with a classical cast bandage. Patients of the second group (study group) as the first stage of treatment performed fixation of the wrist joint with its distraction in the bridge Ilisarov external fixator. In a few days after reducing swelling all patient had ORIF with volar locked plate. To assess the function of the upper limb in the postoperative period, a DASH questionnaire was used. The results were evaluated at 3,6,12 and 18 months. Results and discussion. In 3 months after surgery revealed a significant improvement in the function of the upper limb (estimated by DASH). After 1.5 years after surgical treatment, no statistically significant difference in the result of treatment was revealed. We suppose that distraction of the wrist joint with Ilizarov external fixator accelerates reducing swelling in preoperative period of time and can improve reduction during ORIF.