CHARACTERISTICS OF THE POSTTHROMBOTIC REF LUX BY COLOR-CODED DUPLEX SONOGRAPHY

Reflux in deep viens is accepted as the most important pathophysiologi c phenomenon in postthrombotic syndrome. The data proved by colour cod ed duplex sonography are demonstrated in this summary. As the differen t methods to provoke reflux yet are not examined we present our own re sults. A velocity of more than 10 cm/sec. at the time of the greatest reflux, a duration of reflux of more than 2 seconds and the lack of th e valve signal are the best criteria to detect and quantify a postthro mbotic syndrom by colour coded duplex sonography. Using Valsalva's man oever, calf compression and cuff compression test to provoke reflux, t he cuff compression technique proved to be the best one.