[Prophylaxis of iatrogenic tracheostenosis after laryngeal extirpation].

Causes of such postoperative complication as cicatricial tracheostenosis after tracheotomy and laryngeal extirpation are considered. The author came to the conclusion that the leading cause of tracheostenosis is an invalid choice of tracheotomic tubes by diameter, length and angle. The experience with more than 3000 surgical interventions on the larynx and trachea allowed the author to recommend most effective treatments at each stage of cicatricial tracheostenosis.

[Rabies prognosis in western Siberia and the regulatory factors of the epizootic process].

In this article the regulatory factors of the epizootic process are considered and the spatial-temporal prognostication of rabies infection in the region is proposed on the basis of data on rabies morbidity among animals, the purchase of skins of carnivorous animals for 20-25 years, virological experiments on wild animals, calculation of the number of carnivores and small mammals, as meteorological observations. The study has shown that a variety of animal species serving as hosts for the virus and its population differences contribute to the stable existence of the infection. Rabies morbidity has been found to be positively linked with its preceding level, the number of wild animals, the height and hardness of the snow cover and negatively with the number of small mammals.