Brain natriuretic peptide and impedance cardiography to assess volume status in peritoneal dialysis patients.

Assessment of volume status in patients with end-stage renal disease has long been a problem. Objective tools for estimating dry weight are necessary. The present study was designed to determine if better assessment of volume status could be achieved by measuring brain natriuretic peptide (BNP) and thoracic fluid content (TFC) by bioimpedance.