Patent ID: 7783344
Filing Date: 2010-08-24
Classification: A61B,G16H,Y02A

Abstract:
1. A method comprising: affixing a portable probe dimensioned and configured to be continuously affixed to an ambulatory subject on a selected area of said subject over a selected time period; monitoring a local bioelectric impedance of a portion of said subject using said portable probe, the portable probe exchanging energy with the portion of the subject while affixed to generate impedance data representing at least in part a fluid state of said portion over the selected time period; processing said impedance data to derive one or more long term impedance variations representing changes in hydration which occur over a period of at least several hours during said selected time period, and to identify reproducible long term variations in hydration that arise from predictable or habitual patterns not associated with disease states; and adjusting subsequent measurement results to account for the identified long term variations in hydration; detecting a disease state of said subject associated with a hydration change in said portion of said subject by analyzing at least some adjusted measurement results; and providing an indication that a disease state is present.