Ambulatory venous pressure measurements: new parameters derived from a mathematic hemodynamic model.

Purpose: The mechanism of venous pressure decrease during exercise still remains unclear. To explore the components involved with the regulation of ambulatory venous pressure, we reinvestigated the pattern of pressure decrease during tiptoe exercise with a newly developed mathematic model.

Methods: Seventeen healthy limbs of 16 volunteers (normal group) and 35 limbs of 33 patients with signs and symptoms of chronic venous insufficiency were studied.