[A study of valve dynamics using endoscopy. Does functional valve insufficiency exist?].
The authors refer to findings concerning the valve systems of deep veins and the great saphenous, obtained by application of the Echo-Color-Doppler and endoscopic method. The authors noted that healthy valve structures tended to turn downwards as the loading pressure increased, subsequently returning to a normal morphological and functional state. Slow motion study also stressed the presence of apparently active valve movements, including participation by the vein wall. The term "parieto-valvular functional unit" could be used. The authors suggest the existence of a form of transitory functional valve prolapse responsible for the origin of valve insufficiency, also functional. The healthy valve could thus cede to high pressure, also avoiding any structural damage.
Magi
G
G
Unita Funzionale di Angiologia, Casa di Cura S. Giuseppe, Arezzo, Italie.
D004724:Endoscopy; D006801:Humans; D012501:Saphenous Vein / Q000000981:diagnostic imaging / Q000503:physiopathology; D013997:Time Factors; D014463:Ultrasonography; D014680:Veins / Q000503:physiopathology*; D014689:Venous Insufficiency / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000503:physiopathology*
Etude de la dynamique valvulaire par endoscopie. Existe-t-il une insuffisance valvulaire fonctionnelle?