[The architectonics of the left heart ventricle and the characteristics of the blood flow in a postinfarct aneurysm]. / Arkhitektonika levogo zheludochka serdtsa i osobennosti techeniia krovi pri postinfarktnoi anevrizme.

The paper analyzes left ventricular structure-fraction relationships in the development of postinfarct aneurysm. The altered internal architectonics induces to systemic hemodynamic changes, drastically elevated intraventricular pressure. This is caused by to the dysfunction of the papillary-trabecular complex in the left ventricular cavity, which in turn. This leads to the fact that the heart work as a positive-displacement pump, by losing its capacity as a centrifugal component, by making the myocardium require additional energy expenditures, which in turn appears as varying heart failure. This investigation is of definite practical value in developing adequate correction methods for postinfarct aneurysm which can occur with the retained or formed certain ratios of cardiac structures.

[Comparative hydrodynamic evaluation of variants of the cavopulmonary anastomosis]. / Sravnitel'naia gidrodinamicheskaia otsenka variantov vypolneniia kavapul'monal'nogo anastomoza.

An analysis of the range of postoperative complications following cavapulmonary anastomosis reveals a number of medical engineering problems in surgery techniques. The severity of the surgery due to the nonphysiological rearrangement of blood circulation makes it necessary to search for the most optimal types of anastomosis in terms of the hemo- and hydrodynamics of circulation. To optimize the performance of cavapulmonary anastomosis, namely to define the mutual localization and orientation of the implanted anastomoses against the axes of inflow and outflow, hemo- and hydrodynamic studies were made by Doppler laser anemometry. From the hydrodynamic point of view, the findings indicate the most optimal type of cavapulmonary anastomosis-cruciform anastomosis by displacing 0.5 d from the outflow axis at an angle of 60ë5 degrees.