An electrochemical sensor for detecting selenium in biological fluids on an arenediazonium tosylate-modified metal electrode.

This article presents the results on using a new electrochemical sensor modified with arenediazonium salts (MGE-Cu-COOH) to determine selenium in biological fluids (blood serum). It was shown that the sensitivity of the determination of selenite ions using this modified electrode is higher compared to that of the unmodified one (MGE-Cu). The effect of the concentration of arenediazonium tosylates on various substituents was studied, and the conditions for the production of the electrochemical sensor were developed.

[The role of biofilms in pathogenesis of chronic bacterial rhinosinusitis].

The objective of the present work was to study the contribution of biofilms to the development of chronic bacterial rhinosinusitis. A total of 50 patients with this pathology were available for the examination. Mucosal swabs were taken from the middle nasal passages of all the patients to be used for the detection of biofilms by luminescence microscopy.

[Protein malnutrition in patient in the early postoperative period after uncomplicated removal of the brain tumors].

Malnutrition leads to adverse effects and may worsen clinical outcome. Surgery as a stress factor activates pathological reactions changing metabolism structure. The aim of this study was to evaluate changes of protein metabolism in patients after elective neurosurgical operation.

[Characteristics of the pre-manifest stage in young patients with the first episode endogenous psychosis].

A retrospective study of pre-manifest personality traits in 120 young patients (16-25 years old) identified the clinical heterogeneity of the period preceding the first episode of juvenile endogenous attack-like psychosis. Depending on the degree of personality abnormalities, patients were stratified into 3 groups as having accentuated personality traits, personality disorders (psychopathy) or pseudopsychopathy, the latter divided into deficit and degenerative subgroups. Correlations between the degree of personality abnormality and the type of manifest episode and its nosological status were found.

[Using ASV mode for respiratory support withdrawal in patients after posterior fossa surgery].

The study gives data on how to improve the way from mechanical to spontaneous breathing in patients with weakened respiratory drive after posterior fossa tumor removal. We compared the effectiveness of two methods of weaning from mechanical ventilation in these patients. The main group consisted of 6 patients weaned from ventilator with ASV mode.