[Plethysmographic investigation of the post-thrombotic syndrome]

In 49 patients with a phlebographically ascertained postthrombotic syndrome, who were above all subdivided into morphologically defined degrees of severity, after May and Nissl, a plethysmographic investigation was carried out with the deep positioning test and the venous drainage test. The results were contrasted with a group of 53 patients with a primary varicosis and the measuring results of 102 test persons with healthy veins. A very good correlation between the morphological changes and the haemodynamic findings establishable by means of the phlebembraxis plethysmography could be proved. A clear evidence was possible by means of the venous drainage test, whereas in the deep positioning test a certain demarcation was possible only in stage III of the postthrombotic syndrome.