Evaluating calf bioimpedance measurements for fluid overload management in a controlled environment

Objective : To evaluate the relationship between calf bioimpedance measurements and fluid removal in a controlled environment (hemodialysis) as a first step toward using these measurements for remote congestive heart failure (CHF) monitoring. Approach : Calf bioimpedance measurements were recorded in 17 patients undergoing hemodialysis (9/17 (53%) CHF, 5/17 (30%) female). Measurements were performed before and after hemodialysis. Additional parameters related to hemodialysis and patient fluid status such as estimated dry weight were also recorded. Main results : Calf bioimpedance changes depended on calf fluid status as assessed by calf normalized resistivity (CNR). Patients with lower calf fluid overload (as assessed by CNR greater than ##IMG## [http://ej.iop.org/images/0967-3334/39/12/125009/pmeaaaf277ieqn001.gif] ##IMG## [http://ej.iop.org/images/0967-3334/39/12/125009/pmeaaaf277ieqn002.gif] m ##IMG##
Source: Physiological Measurement - Category: Physiology Authors: Source Type: research