PROCESS AND DEVICE FOR DETERMINING HEMODIALYSIS PARAMETERS

摘要

A method is described for determining hemodialysis parameters during an extracorporeal blood treatment according to which the blood to be treated in an extracorporeal circulation flows through the blood chamber of a dialyzer divided by a semipermeable membrane into the blood chamber and a dialysate chamber, and dialysate in a dialysate path flows through the dialysate chamber of the dialyzer. According to the method pursuant to the invention, the hemodialysis parameter can also be determined when no balanced state has yet been established. The method according to the invention is based on the response of the dialyzer to a pulse function as inlet signal (pulse response) from the course over time of the physical or chemical characteristic quantity of the dialysate upstream and downstream of the dialyzer. The hemodynamic parameter is then determined from the pulse response of the dialyzer.