[Efficacy of the use of sirolimus covered stents in the treatment of diffuse atherosclerotic lesions of coronary arteries].

Aim of the study was to compare efficacy of sirolimus covered (116 patients, group 1) and bare (117 patients, group 2) stents. Groups were comparable according to main characteristics. Proportion of patients with diabetes was 19 and 13.

[Change of serological properties of museum strains of Shigella flexneri in different terms of storage].

The viability, purity, biological and serological properties of museum strains of Shigella flexneri which were kept in lyophilized state during above 30 years were studied. Primary serological characteristics were specified, it was established that type 2a is the predominant serotype independent of the years and regions of isolation. Some strains lost antigens as a result of the long-term preservation or reinoculation on agar media.

[The treatment of coronary atherosclerosis: effect of the use of stents on immediate and long term results of coronary angioplasty].

Immediate and long term results of 2 methods of coronary angioplasty (balloon dilatation and stenting) were analyzed retrospectively. During 10 years proportion of stent implantations increased 30-fold reaching 95-97% of coronary interventions. This was associated with improvement of immediate results of angioplasty: lowered rates of myocardial infarctions, urgent coronary artery bypass graftings and acute coronary artery occlusions (from 2.

[Chronic duodenal obstruction in children].

Chronic duodenal obstruction was observed in 18 children aged from 2 months to 14 years. The disease was caused by different malformations of the intestine. In children younger than 7 years of age the main clinical manifestation of the disease was the syndrome of vomiting.