[The value of occlusion plethysmography and stress venous pressure in functional diagnosis following leg vein thrombosis].

In 52 patients with condition after thrombosis of the deep leg veins before discharge from hospital the venous capacity and the venous outflow were measured on the two legs by means of occlusion plethysmography of the veins as well as the percental decrease of the venous pressure during action of the leg muscles by means of phlebodynamometry. The results have been compared with the phlebography. 10 patients again had a venous system without pathologic findings, in 12 patients unchangedly was a complete and in 30 ones in incomplete occlusion. By means of the measuring of the venous pressure still existing obstacles of the outflow of the pelvic and femoral region could be separated from the lower leg and their degree of severity, too, could be quantified. The venous capacity and the venous outflow allowed with sufficient security to delimit the values of the healthy leg from those of the postthrombotic one, whereas a localization of the height and a further quantification of the postthrombotic condition failed. Improved technology of the devices as well as the establishment of venous capacity and venous outflow in one measuring process increase the value of the venous occlusion plethysmography clearly as a non-invasive method which can be carried out by a function-assistant.