[Retrospective follow-up control of progressive renal failure with logarithmic transformation of the serum creatinine concentration].

Of 108 patients with chronic terminal renal insufficiency in 81 patients controls of the course were possible. In 50 patients an lg-linear course of the increase of creatinine against the time was the result. The running through time from 200 to 1,000 mumol/l creatinine was measured. In 31 patients the at first flatter, also linearly recognizable increase of creatinine suddenly changed into a second steeper, also lg-linear part of the straight line. The exact knowledge of the accelerating factors might postpone the time of the dialysis dependence in one part of the patients.