CLINICAL AND HEMODYNAMIC EFFECTS OF INTERACTION BETWEEN THE DIRECT
AND THE REFLECTED PULSE WAVE

Krevchik Vladimir Dmitrievich, Doctor of physical and mathematical sciences, professor, head of sub-department of physics, Penza state university, physics@pnzgu.ru
Oleynikov Valentin Elivich, Doctor of medicine, professor, head of sub-department of therapeutics, Medical institute, Penza state university, terapia-pgu@rambler.ru
Matrosova Irina Borisovna, Candidate of medical sciences, associate professor, sub-department of therapeutics, Medical institute, Penza state university, terapia-pgu@rambler.ru
Gusakovskaya Lyudmila Ivanovna, Assistant, sub-department of therapeutics, Medical institute, Penza state university, terapia-pgu@rambler.ru
Sergatskaya Nadezhda Valeryevna, Postgraduate student, Medical institute, Penza state university, terapia-pgu@rambler.ru

616.12–008.331.1

The particular resolving in the form of a traveling wave of linearized equations of blood motion in a blood vessel was studied. The dependence of the direct, reflected from the bifurcation, and the resulting pulse waves from the time over the wide range of parameters that determine the variability of blood vessel's physical and mechanical properties, taking into account various kinds of pathologies was evalu-ated. It was shown, that pulse wave, reflected from the bifurcation of rigid vessels, returns earlier – not in diastole, but in systole, while the amplitude of its velocity in-creases significantly. It was established, that the analogical situation take place also in case of volume increasing of the blood deposited after pulse wave reflection. The features of the resulting pulse wave in form of velocity oscillations during systole as-sociated with vessel's rigidity and increasing the blood deposited volume, were identified.

direct and reflected pulse wave, the Navier – Stokes linearized equations, the resolving kind of traveling wave, velocity and phase of the reflected pulse wave, aortic stiffness, rigidity of blood vessels after bifurcation, the amount of deposited blood after pulse wave reflection.