Table 1.

Objective tools to determine dry weight in hemodialysis patientsa

Blood volume monitoring
    relative change during treatment
    blood volume with ultrafiltration pulse (to assess increment of vascular refill)
Ultrasound assessment of IVC
    IVC diameter
    IVC collapsibility index (fractional decrease of diameter during breathing cycle)
BNP, N-terminal pro-BNP, atrial natriuretic peptide levels
Bioimpedance method
    whole body (wrist to ankle)
    segmental
    continuous intradialytic calf measurements5
Extravascular lung water index (invasive)26
  • a BNP, brain natriuretic peptide; IVC, inferior vena cava.