Venous Pressure Measurement of the Great Saphenous Vein Using Controlled Compression Ultrasound in Healthy Persons and Patients With Chronic Venous Disease as a New Non Invasive Method for Investigation of the Pathophysiology in Primary Varicose Veins

Part I:

Proof of concept trial to achieve normal venous pressure values under different provocation maneuvers in healthy persons

Part II:

Non invasive measurement of venous pressure under different provocation maneuvers in patients with chronic venous disease