[Role of blood refluxes in the genesis of venous trophic disorders in patients with chronic venous insufficiency].

The authors analyzed the results of a comprehensive examination of 120 patients with class C6 chronic venous insufficiency according to the CEAP classification, and open trophic ulcers. The patients were subdivided into 2 groups. Group One comprised a total of 75 patients with varicosity, and Group Two consisted of 45 patients with post-thrombotic disease. The localization, intensity and length of the refluxes of blood in the venous system of the affected extremity were determined by means of ultrasonographic angioscanning. Examining the patients with varicosity revealed that in 81.4% the main haemodynamic factor leading to development of the ulcer was a high-intensity, total-subtotal blood reflux along the superficial veins, and in 9.3% - high-intensity superficial and deep refluxes of blood. We failed to determine the blood reflux priority in 9.3% of patients. The trophic ulcers had developed under the effect of low-intensity refluxes of blood in the superficial, deep and perforating veins in elderly patients on the background of heart failure. The most damaging influence on the microcirculatory bed in patients with post-thrombotic disease with recanalization of deep veins is exerted by a high-intensity total reflux of blood in the popliteal and talocrural segments of the venous system of the lower extremities, which was revealed in 68.9% of patients. The developing pathological flow of blood from the muscular-venous pump of the cms into the deep veins of the foot induces perforating insufficiency on the foot and crus, thus creating two zones of venous hypertension above and beneath the ankle. The major factor of trophic ulcers development in patients with segmental obliteration (17.8%) and insufficient recanalization of deep veins (13.3%) was venous hypertension in the distal portions of the affected extremity. Blood refluxes in deep veins of the ankle were of a low-intensity pattern, and played an auxiliary role in development of trophic disorders.