[Arterial hemodynamics of kidney transplants after end-to-side and end-to-end anastomosis (experimental study in the dog)].

: Arterial hemodynamics of end-to-side versus end-to-end anastomized kidney grafts were studied comparatively in anaesthetized dogs with bilateral autotransplants. Evaluating the data of mean pressure in the renal artery (Pm), amplitude of the pulse-pressure (delta P), maximal steepness of the pulse-pressure (dp/dtmax), maximal speed of the flow-waves (Vimax), planimetric percentage of positive and negative shares of the flow-curves and the resulting "effective" level, mean renal blood flow (Vtotal) and the amount of vascular resistance calculated from the quotient Pm/Vtotal, it was found that delta P, dp/dtmax, Vimax and Vtotal were significant higher immediately after transplantation using end-to-end anastomoses as compared with end-to-side anastomoses. However, controls following 4 months after the transplantation revealed normal hemodynamic findings and no differences in the course of anastomotic pulse curves were observed. The initial disparity in the hemodynamics of both types of anastomoses was refered to different modules of elasticity (E) in consequence of unequal lengths of anastomoses reflecting the pulse waves by increased peripheral resistance.