Torterue X, et al. - The link between predialytic inferior vena cava (IVC) diameter measurements and hydration status evaluated by physicians and bioimpedance spectroscopy (BIS) in children on hemodialysis (HD) was assessed in this study along with the association between IVC measurements and persistent hypertension. For fluid overload assessment in this patient population, IVC measurement was not found to be reliable, neither it correlated with extracellular fluid volume assessed by bioimpedance spectroscopy (BIS) measurements. However, as a tool to discriminate volume-dependant hypertension from volume-independant hypertension, IVC measurements might be of interest.