[Possibilities of endoscopic surgery in treatment of chronic venous insufficiency of the lower extremities].

The authors present their experiences with endoscopic dissection of perforating veins in patients with severe forms of chronic venous insufficiency with special reference to the peculiarities of blood supply of the extremity superficial tissue. The generalized morphological description of the perforating arteriovenous structures of the leg is presented as a vascular formation including the arteries and veins put in the general connective-tissue vagina and beginning from the profound or/and muscular veins and arteries. Operations were made on 56 patients aged 25-76 years, 40 of them had postthrombotic disease, 16 - varicose disease. The endoscopic subfascial dissection of the perforating veins was conducted using the standard set of tools for laparoscopic surgery of K. Storz Company. During the surgical procedure the perforating vascular bunch in the subfascial space was isolated, the veins were intersected electrosurgically, the other parts of the vascular bunch were preserved. On the average, the patients were in the hospital for 7+/-2 days. Trophic ulcers healed up during 7-30 days. Long-term results were good in 30%, satisfactory in 64%, unsatisfactory - in 6%. So, the selective endoscopical dissection of perforating veins is thought to be a radical, minimally invasive, anatomically and functionally reasonable method of elimination of the horizontal venous blood regurgitation. This technique resulted in a considerably decreased number of postoperative complications and less time of hospital treatment.

[The toxic and hygienic characteristics of the new synthetic organic flocculants AES-5, AES-7 and AES-10]. / Toksiko-gigienicheskaia kharakteristika novykh sinteticheskikh organicheskikh flokuliantov AES-5, AES-7 i AES-10.

A toxicological and hygienic characterization is submitted of novel synthetic organic flocculant AEC-5, AEC-7, AEC-10 which are low-toxicity substances and are classified under the fourth class of hazards. They have no skin-resorptive, locally irritative action and are endowed with a weak cumulative activity of functional character. The AEC-5 flocculant exerts a moderately manifest sensitizing effect in the dermal route of entry.

[The effect of the multiyear agricultural use of animal husbandry wastes on the infectious morbidity of the local population]. / Vliianie mnogoletnogo sel'skokhoziaistvennogo ispol'zovaniia otkhodov zhivotnovodstva na infektsionnuiu zabolevaemost' mestnogo naseleniia.

The report presents results of study of relationship between the longterm practice of utilization of waste matter from livestock industry (solid, liquid portions of manure, redundant active silt) in the crop-growing of the steppe, forest-steppe zones as well as of those of woodlands in Ukraine, on the incidence of acute infective diseases of the intestine in the community. The soil of farm lands was found out to be affected by an extensive bacterial contamination due to the above wastes being utilized on a wide scale. The degrees of risk of acute intestinal infection morbility in population areas located in those zones having utilization fields, are significantly higher than beyond their bounderies. Significant direct relationship between the size of the utilization fields and the incidence of acute intestinal infection in the community was established.

[Hygienic rationale for the maximum allowable concentration of ruspol in water reservoirs]. / Gigienicheskoe obosnovanie PDK ruspola v vode vodoëmov.

Ruspol is sodium salt of cellulose glycolic acid. Its organoleptic threshold in water is 500 mg/kg. MAC of ruspol in water is recommended on the level 0.5 mg/l.

[Hygienic characteristic of some new materials used for new and modernized water supply systems]. / Gigienicheskaia kharakteristika nekotorykh novykh materialov, prednaznachennykh dlia ispolzovaniia v novykh i modernizirovannykh sistemakh vodoobespecheniia.

Activated carbon FAS/Pt and membrane GOMPOD do not deteriorate water quality under its purification. Mineralisator MP-UK in general does not deteriorate water quality. All the studied materials were recommended for treatment and conditioning of water in space apparatuses.

[Toxicologic evaluation of purified municipal and industrial waste water]. / Toksikologicheskaia otsenka doochishchennykh gorodskikh i proizvodstvennykh stochnykh vod.

Analysis of waters sewage in Kiev and of waste water of a textile and se wing enterprise in Chernigov has shown that treatment by biological method and with activated carbon was fairely efficient in toxicity reduction.

[Hygienic study of an activated fibrous charcoal material as a sorbing filtering element for drinking water afterpurification]. / Gigienicheskoe izuchenie aktivirovannogo uglerodnogo voloknistogo materiala v sostave sorbiruiushchego fil'truiushchego élementa dlia doochistki pit'evoi vody.

The results of complex toxicological and hygienic study showed that the quality of pipe water filtered through the activated carbonic fibrous material (ACFM) "Dnepr-F" forming a part of absorptive filtering element improved markedly. The content of organic substances decreased drastically as well as that of nitrates and iron. Microbiological indices did not suffer appreciable changes and were within permissible limits. The water filtered through the absorptive element with ACFM had no adverse influence on the organisms of warm-blooded animals. Proceeding from foregoing one can conclude that the "Dnepr-F" may be recommended as a part of absorptive filtering element for the final refinement of drinking water.

[The hygienic evaluation of an aerosol-gas mixture as a preservative of potable water]. / Gigienicheskaia otsenka aérozol'no-gazovoi smesi kak konservanta pit'evoi vody.

Complex hygienic assessment of the aerosol-gas method for the drinking water conservation demonstrated no significant effects on white rats in toxicological and genetical experiments. The method was recommended for long-term conservation of the drinking water in steel tanks.

[Current problems of sanitary protection of water resources and soil]. / Aktual'nye problemy sanitarnoi okhrany vodnykh resursov i pochvy.

Chemical pollution of water reservoirs and rivers in Ukrainian SSR was noted. Anthropogenic soil pollution is also discussed, and sanitary measures for reservoirs and soil protection suggested.