IRCT2016090329587N2 IRCT 2016-10-09 Vice chancellor for research of Tehran University of Medical Sciences. Effect of lower limb bioimpedance spectroscopy on determining patient 's dry weight and their cardiovascular parameters. Clinical trial of effect of lower limb bioimpedance spectroscopy on determining patients' dry weight and their cardiovascular parameters in patients with chronic kidney disease under hemodialysis. 2016-09-22 anticipated 53 Complete https://irct.ir/trial/23739 interventional Randomization: N/A, Blinding: Not blinded, Placebo: Not used, Assignment: Single, Purpose: Diagnostic. N/A Patients with chronic kidney disease under hemodialysis... Intervention: Determining patient's dry weight with lower limb bioimpedance spectroscopy. Lower limb bioimpedance spectroscopy will be done at supine position in the time of dialysis. Calf resistance will be monitored every 30 minutes in the time of dialysis until extracellular resistance persists despite ultrafiltration continuing. This number represents the estimated dry weight which is determined using bioimpedance spectroscopy. If the patient does not reach the goal dry weight, end dialytic target weight will be reduced 0.2-0.5 Kg in next dialysis sessions. Dry weight will be determined with bioimpedance spectroscopy once at the end of third month after patient reaches the goal dry weight and once at the end of the study (at sixth month). Also, the goal weight will be changed if needed..