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. Author manuscript; available in PMC: 2011 Mar 16.
Published in final edited form as: Am Heart J. 2008 Dec 16;157(3):402–411. doi: 10.1016/j.ahj.2008.10.016

Figure 2.

Figure 2

Implanted electrode impedance measurement. A, Schematic representation of the implanted electrode technique. B, Plot of the impedance Z for device-based fluid monitoring for a hypothetical episode of fluid overload. Point B is the baseline impedance in the absence of fluid overload, point C marks the steady decline in impedance with accumulating pulmonary fluid over several days or weeks given by Δt, and point D follows the restoration of baseline impedance ΔZ with applied diuretic therapy.