Pedal Pump Clinical Trial on Edema V2

Inclusion Criteria: * Bilateral lower extremity edema of at least mild severity judged by the treating clinician to be due to CHF, chronic venous insufficiency, kidney disease, lymphedema, or other etiologies of fluid overload conditions. * Medically stable * Able to remain in Fowler position for 10 minutes * Patients in the ER, observation, or admitted to the hospital for any period of time; outpatients (specifically CHF clinic patients) * Patients must give informed consent to participate. The patient must be able to read the consent form (in English or Spanish) or give consent after the form is translated for the patient. Exclusion Criteria: * Lipedema (fat distribution) as the only cause for edema * Pressure ulcers * Active DVT (i.e. Patients who have signs of acute unilateral swelling must have a documented negative lower extremity venous duplex ultrasound within the current admission before they will be included in the trial.) * Symptomatic peripheral vascular disease * Wounds or infections in the feet, legs, buttocks, or back deemed unfit for treatment per the trained Operator. * Leg or back surgery in previous 30 days * Known pregnancy * Severe osteoporosis/fracture risk