Replacement of Superior Vena Cava with Autogenous Tissue.
ARMY MEDICAL RESEARCH AND NUTRITION LAB DENVER COLO
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Autogenous pericardium and vein were used to replace a maximally resected superior vena cava average length, 5.5 cm. in the mongrel dog. Simple replacement failed because of thrombus formation at the suture lines. Limited success was obtained with pericardium complemented with an arteriovenous fistula placed 1 cm. cephalad to the cephalad suture line. An autogenous vein graft with a similar complementary fistula was successful in 15 consecutive preparations. These animals, followed for one year, showed normal function with nearly perfect anatomical restoration without anticoagulant therapy. The fistula maintained graft patency probably because turbulence prevented thrombus retention while neointima formed. The fistulas had closed spontaneously in 6 dogs at one year the remainder were nearly closed. Author
- Medicine and Medical Research