| Popis: |
Measurement of instantaneous circulatory rates by Doppler effect per-operatively, at the 6th hour, the 8th day and the 2nd month was used to observe haemodynamic changes in 20 arteriovenous fistulae created for the purpose of chronic haemodialysis. Blood flow rates, initially low, increased up to the 8th day and were subsequently stable. A circulatory rate of 22 cm/s in the drainage vein 6 hours after the operation would seem to guarantee the permeability of the therapeutic arteriovenous anastomosis. To some extent, the authors have described the course of therapeutic arteriovenous fistulae during the first two months. Criteria of permeability have been determined making it possible to spare the vascular capital of these patients. |
