Inclusion Criteria:  Participant is 18 years of age. Participant weighs ≥ 34kg. Participant was hospitalized and had dialysis dependent End-Stage Renal Disease or Acute Kidney Injury and was prescribed acute intermittent renal replacement therapy.  Exclusion Criteria:  Treatments isolated to ultrafiltration only. Any documented condition the Physician feels would prevent the participant from successful inclusion in the study.