An estimated five million people are currently diagnosed with congestive heart failure (CHF) in the United States, with over 400,000 new diagnoses annually. Almost one in two patients will be readmitted to the hospital within four to six months of discharge. Readmissions can occur when the patient becomes fluid-overloaded due to poor medication and/or diet compliance, among other reasons. Up to 50% of these early re-admissions may be prevented if symptoms are recognized early enough and medication and diet compliance improve.