The weighing process in patients on hemodialysis: an opportunity to improve volume management.

Background: Hemodialysis relies on accurate body mass (BM) assessment to determine ultrafiltration volumes, but we have not identified published practice patterns disclosing how to handle clothing mass. Here we investigated the potential impact of clothing mass on predialysis BM determination, hypothesizing that a standardized template for clothing mass estimation enhances accuracy, compared with conventional practice.

Methods: Measurements included dressed and undressed BM predialysis.

Susceptibility of hepato-splanchnic perfusion to intra-abdominal pressure in peritoneal dialysis patients.

Background: The impact of peritoneal filling on hepato-splanchnic perfusion during peritoneal dialysis has not been fully elucidated yet.

Methods: Measurements were done in 20 prevalent peritoneal dialysis patients during a peritoneal equilibration test (PET) with 2L of standard dialysate. Data were obtained in the drained state at baseline (), after instillation (), and after 2 h of dwell time ().

Magnitude and precision of absolute blood volume estimated during hemodialysis.

Management of body fluid volumes and adequate prescription of ultrafiltration (UF) remain key issues in the treatment of chronic kidney disease patients. This study aims to estimate the magnitude as well as the precision of absolute blood volume () modeled during regular hemodialysis (HD) using standard data available with modern dialysis machines. The estimation utilizes a two-compartment fluid model and a mathematical optimization technique to predict UF-induced changes in hematocrit measured by available on-line techniques.