alexa Valvular reflux after deep vein thrombosis: incidence and time of occurrence.
Medicine

Medicine

Family Medicine & Medical Science Research

Author(s): Markel A, Manzo RA, Bergelin RO, Strandness DE Jr

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Abstract From December 1986 to December 1990, 268 patients with acute deep vein thrombosis were studied in our laboratory. From this group 107 patients (123 legs with deep vein thrombosis) were placed in our long-term follow-up program. The documentation of valvular reflux and its site was demonstrated by duplex scanning. The duplex studies were done at intervals of 1 and 7 days, 1 month, every 3 months for the first year, and then yearly thereafter. The mean follow-up time for these patients was 341 days. In addition, reflux was evaluated in 502 patients with negative duplex study results and no previous history of deep vein thrombosis or chronic venous insufficiency. In the patients with acute deep vein thrombosis, valvular incompetence was noted in 17 limbs (14\%) at the time of the initial study. Reflux was absent in 106 limbs (86\%). In this last group reflux developed in 17\% of the limbs by day 7. By the end of the first month, 37\% demonstrated reflux. By the end of the first year, more than two thirds of the involved limbs had developed valvular incompetence. The distribution of reflux at the end of the first year of follow-up was the following: (1) popliteal vein, 58\%; (2) superficial femoral vein, 37\%; (3) greater saphenous vein, 25\%; and (4) posterior tibial vein, 18\%. Reflux seems to be more frequent in the segments previously affected with deep vein thrombosis. Among cases where segments were initially affected with thrombi, after 1 year the incidence of reflux was 53\%, 44\%, 59\%, and 33\% for the common femoral vein, superficial femoral, popliteal vein, and posterior tibial vein, respectively.(ABSTRACT TRUNCATED AT 250 WORDS)
This article was published in J Vasc Surg and referenced in Family Medicine & Medical Science Research

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