Method and a device for determining the dry weight of a patient with kidney failure
First Claim
1. A method for determining the dry weight Wgtdry(t) of a patient at a time t comprising the steps of:
- determining the extracellular water volume ECV(t) of the patient at the time t,determining the weight Wgt(t) of the patient at the time t,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) reference relation representing healthy subjects.
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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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Citations
25 Claims
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1. A method for determining the dry weight Wgtdry(t) of a patient at a time t comprising the steps of:
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determining the extracellular water volume ECV(t) of the patient at the time t, determining the weight Wgt(t) of the patient at the time t, 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) reference relation representing healthy subjects. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification