Large cohort studies have found that lower systolic BP obtained before or after dialysis is a determinant of mortality. On the other hand, a higher ambulatory BP is associated with increased mortality among hemodialysis patients.More recently, home and ambulatory BP recordings were found to be of prognostic value.Yet, almost all hypertension management in dialysis units uses dialysis unit BP. For treating hypertension, even the national guidelines recommend the use of BP obtained in the dialysis unit.