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The EdemaBand

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Abstract

The EdemaBand is a class II medical device that empowers patients with congestive heart failure to manage their condition at home. Using an array of textile electrodes on a form-fitting band, the device measures bioimpedance to determine changes in one of the most prevalent symptoms of congestive heart failure: pulmonary edema. Decreases in bioimpedance indicate an increase in pulmonary edema. Based on experimental data obtained from animal trials, every milliliter of saline injected into the subject’s lungs results in a 3.37Ω decrease in bioimpedance. Once interthoracic impedance drops by 6%, the EdemaBand notifies the patient; if levels drop by 12% or more, the EdemaBand provides a visual and auditory alert to contact a physician. Commercial production of this device could be achieved at a cost of less than $50. Ultimately, the EdemaBand is a cost effective solution to congestive heart failure that preserves patient independence and limits hospital readmission rates.

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