[Proof of the effectiveness of compression by nuclear medicine, plethysmography and venous pressure measurement].
1) In a lying down position a) immediately and under rapid compression, one observes a reduction in muscle flow as well as a reduction of the perfusion of the foot and of the systolic pressure of the big toe. After disinfiltration of the leg by compression, the muscular flow more than doubles (clearance with Xenon 133). b) a reduction in the venous blood volume of the limb by about 1/3. c) an increase in the venous circulation speed by about 1.5 times (tracer in a vein of the back of the foot). The degree of change is depending from the pressure of the compressive bandage (in a lying down position, between 20 mmHg and a maximum of 40 mmHg). 2) while walking a) shortening of the pathological refluxes in the veins of the lower limbs (directional Doppler). b) improvement of the pump output (increase inthe volume of blood pumped upwards), and a variable influence of the peripheral venous pressure (simultaneous methods of plethysmography of the foot and the venous pressure). c) reduction of edema, improvement of the disturbed lymphatic flow (plethysmography, lymphotropic tracers with radioactive marking).
D001158:Arteries / Q000503:physiopathology; D001458:Bandages; D001776:Blood Circulation Time; D001810:Blood Volume / Q000528:radiation effects; D004487:Edema / Q000503:physiopathology; D006801:Humans; D007866:Leg / Q000098:blood supply; D010991:Plethysmography; D012039:Regional Blood Flow / Q000528:radiation effects; D013667:Technetium; D014690:Venous Pressure / Q000528:radiation effects*; D014980:Xenon Radioisotopes
D014980:Xenon Radioisotopes; D013667:Technetium
Preuves de l'efficacité de la compression par des méthodes de médecine nucléaire la pléthysmographie et la mesure de pression veineuse.