Method and a device for determining the dry weight of a...

Details Method and a device for determining the dry weight of a... Method and a device for determining the dry weight of a...

2006-07-04

2006-07-04

Hindenburg, Max (Department: 3736)

Surgery

Diagnostic testing

Measuring electrical impedance or conductance of body portion

C604S029000

Reexamination Certificate

active

07072710

ABSTRACT:
A system and method for determining the dry weight wgtdry(t) of a patient at a time t by determining the extracellular water volume ECV(t) and the weight Wgt(t) of the patient at time t and by deriving the dry weight wgtdry(t) of the patient from an intersection of a function derived from the determined ECV(t) and Wgt(t) values with a previously established extracellular water volume (ECV) against dry weight (wgtdry(t)) reference relation representing healthy subjects. To obtain more accurate results it is also proposed to take into account a compartmental mass correction Δm(t). The invention also relates to a device for deriving the dry weight wgtdry(t).

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patent: 6615077 (2003-09-01), Zhu et al.
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Zhu et al., Validation of Changes in Extracellular Volume Measured During Hemodialysis Using a Segmental Biompedance Technique, 1998, ASAIO Journal, vol. 4535, pp. M541-545.

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