Comparison of Conventional Dialysis and the Allient System

Inclusion Criteria: * Maintenance in-center hemodialysis * Age greater than or equal to 18 years * Has been on hemodialysis for at least 4 months * Uses a standard single-pass dialysis machine with a high-flux dialyzer Exclusion Criteria: * Hospitalization during the 8 weeks preceding enrollment * Infection requiring antibiotic treatment during the 8 weeks preceding enrollment * Central venous cather as dialysis access * Uncontrollable blood coagulation anomalies * Smokers * Dialysis regimen other than 3 times weekly * In ability to understand the English language and give informed consent for participation in the study