Patients on peritoneal dialysis are frequently hypervolemic which is associated with deleterious changes in left ventricular (LV) architecture including increased LV mass. In dialysis patients, increased LV mass is associated with death. Recent randomized trials have demonstrated that increasing small solute clearance is not associated with improved outcomes - hence an increased interest in the management of volume control in ESRD patients. Bioimpedance analysis is inexpensive, safe and easy to use and appears to be more useful than other techniques to assess volume status in dialysis patients. In addition, dialysis patients are vitamin D deficient and this is also associated with an increased LV mass and its inherent complications.