[Levels of dimethyl-L-arginine in ultrafiltrate and blood pressure in patients during hemodialysis].

The contant of dimethyl-L-arginine in the ultrafiltrate obtained during dialysis session from 30 patients with end-stage renal failure maintaned on chronic hemodialyses was studies. 14 patients were normotensive and 16 were hypertensive. In patients with hypertension dimethyl-L-arginine level was significantly elevated (mean value 7.67 mumol/l), when compared to patients with normal blood pressure (mean value 2.37 mumol/l). Prolongation of the dialysis session is postulated in hypertensive patients.