[The effectiveness of propranolol therapy of subfold hemangioma in the children during the first year of life].

The objective of the present study was to estimate the effectiveness and tolerance of propranolol therapy prescribed to the children presenting with vascular hyperplasia of the larynx. The experience with propranolol therapy of 12 patients suffering vascular hyperplasia of the larynx (subfold hemangioma) is analysed. Nine of these children had been given systemic glucocorticoid therapy prior to the present study that failed to produce a clinically significant effect. On the contrary, the treatment with propranolol resulted in a well apparent clinical effect in the form of the marked decrease in the size of subfold hemangioma and the reduction in the degree of laryngeal stenosis from grade 2-3 to 0-1 as early as 10-14 days after the onset of propranolol therapy at a daily dose of 2 mg/kg. None of the patients developed adverse reactions related to the treatment with propranolol. The results of the study indicate that the treatment of vascular hyperplasia, such as subfold hemangioma with the non-selective beta-blocker propranolol is both efficacious and safe for the patients. This gives reason to recommend this therapeutic modality as the first-line treatment of the children starting from the first weeks of life.

[Comparative evaluation of the safety of poly- and and oligoguanidines].

The antimicrobial activity and microenvironmental safety of poly- and oligoguanidine antiseptics were compared. E. coli and St. aureus test strains were found to be more sensitive to chlorohexidine bigluconate (CHB) upon a long (24 hour) exposure and to polyhexamethylene guanidine derivatives on short (30-second) contact. It is concluded that unlike polyguanidine antiseptics, CHB is more ecologically dangerous; when used for rapid disinfection, it can provoke impairment in the microenvironmental balance outside the area of application. The findings show it expedient to assess the microenvironmental safety of antimicrobial agents in order to prevent ecological catastrophes.

[Comparison of the methods of evaluation of the microbiological danger of antimicrobial agents by the example of oligo- and polyguanidines].

The article contains the results of comparison of the methods of evaluation of the microbiological danger of antimicrobial agents by the example of oligo- and polyguanidines. The study demonstrates that choice of an adequate study model (a bacterial or protozoa species) and exposure time depends on the characteristics of the preparation to be tested. It shows that the microbocide activity of polyguanidines should be studied on a bacterial model using long (24 hours) exposure. The most sensitive to XG6 was a protozoa culture in short-time exposure. To evaluate the biological danger ofantimicrobial agents, it is also possible to apply techniques that allow revealing reversable physiological changes in a culture of test objects.