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[Annular constriction of popliteal vein for treating severe venous insufficiency]
1Department of Vascular Surgery, Dalian Railway Hospital, Dalian 116001, China.
Objective:
To study the mechanism and therapeutic effects of annular constriction for severe venous insufficiency of legs.
Methods:
Annular constriction of popliteal vein was performed by Gore-Tex vascular graft in 82 patients. Among them, 78 patients had deep venous valve insufficiency of legs (III, IV degree), 2 postphlebitic syndrome, and 2 valve absence of deep vein. Under normal respiration and breath holding, venous pressure was measured at the proximal and distal part from the constricting site.
Results:
Great difference was noted in the venous pressure between the proximal and distal part from the constricting site. The pressure was (9.4 +/- 4.5) mm Hg, (41.2 +/- 28.1) mm Hg at calm and (32.4 +/- 16.2) mm Hg, (41.2 +/- 28.1)mm Hg at breath holding (P < 0.01). Symptoms disappeared or released after operation. Ulcer healed in all patients. Venous pressure decreased by over 60%. Pressure recovery time was over 22 seconds. There was no reflux distal to the constricting site. Deep venous angiography and color Doppler showed an effect similar to venous valve.
Conclusion:
Annular constriction is effective in treating severe venous insufficiency of legs.