title: Arteriovenous shunt as a method of restoring venous drainage in rabbit ear replantation.
abstract: An arteriovenous (AV) shunt as a method of restoring venous drainage during replantation was examined by use of the rabbit ear model. The results were compared to ears replanted using one vein (1:1) or two veins (2:1) for venous drainage. The success rate for AV shunt replantations was found similar to that of replantations with a 1:1 ratio, but lower than that of ears with a 2:1 ratio. Postoperatively, ears replanted using an AV shunt or a 1:1 ratio revealed more swelling and lower tissue oxygenation than ears with a 2:1 ratio. After 10-14 days, all ears that survived were similar in appearance, regardless of method of replantation. Microscopic venules crossing the replanted interface appeared at seven days following surgery in all groups. The authors conclude that the AV shunt method offers an alternative to venous anastomosis when vein-to-vein reconstruction cannot be established.
authors.affiliation: Department of Orthopaedics, Peking Union Medical College Hospital, Beijing, China.
authors.forename: H
authors.initials: H
authors.lastname: Lin
authors.forename: M A
authors.initials: MA
authors.lastname: Posner
authors.forename: T
authors.initials: T
authors.lastname: Yue
authors.forename: D C
authors.initials: DC
authors.lastname: Liu
mesh_terms: D000714:Anastomosis, Surgical; D000818:Animals; D001166:Arteriovenous Shunt, Surgical / Q000379:methods; D004427:Ear Diseases / Q000209:etiology / Q000473:pathology; D004431:Ear, External / Q000098:blood supply / Q000473:pathology / Q000601:surgery*; D004487:Edema / Q000209:etiology / Q000473:pathology; D005544:Forecasting; D006085:Graft Survival; D008751:Methylene Blue; D008866:Microsurgery; D009336:Necrosis; D010100:Oxygen / Q000097:blood; D011817:Rabbits; D012092:Replantation / Q000009:adverse effects / Q000379:methods; D014654:Vascular Patency; D014680:Veins / Q000473:pathology / Q000601:surgery; D014689:Venous Insufficiency / Q000209:etiology / Q000473:pathology; D014699:Venules / Q000473:pathology
chemical_list: D010100:Oxygen; D008751:Methylene Blue