title: [Stented dilated or varicose veins as arterial bypass transplants: experimental and initial clinical results].
abstract: Dilated and varicose veins are usually not used as arterial bypass-grafts despite they are lined with functional endothelium. External support by a constrictive mesh tube could conform these veins into evenly calibrated bypass-grafts. Ovine jugular veins could be constricted from 15 to 6 mm diameter without forming folds on the inner flow surface. 6 months after implantation of 5 cm long jugular vein segments into the carotid arteries of 7 sheep the inner diameter was 19.5 +/- 3.3 mm for native veins (n = 4) and 7.6 +/- 0.8 mm for constricted veins (n = 10). Intimal hyperplasia was reduced from 0.4 +/- 0.2 mm in native to 0.23 +/- 0.07 mm in reinforced veins (p = 0.03). Mesh tube constricted varicose veins were used as bypass material in 11 infrainguinal reconstructions. All grafts were well calibrated at control angiography. External constriction by mesh tubes is a means to convert varicose veins into suitable bypass grafts.
authors.affiliation: II. Chirurgische Universitätsklinik Wien.
authors.forename: A
authors.initials: A
authors.lastname: Moritz
authors.forename: H
authors.initials: H
authors.lastname: Magometschnigg
authors.forename: M
authors.initials: M
authors.lastname: Staudacher
authors.forename: H
authors.initials: H
authors.lastname: Ptakovsky
authors.forename: F
authors.initials: F
authors.lastname: Raderer
authors.forename: R
authors.initials: R
authors.lastname: Ullrich
authors.forename: F
authors.initials: F
authors.lastname: Grabenwöger
authors.forename: E
authors.initials: E
authors.lastname: Wolner
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000818:Animals; D001157:Arterial Occlusive Diseases / Q000601:surgery*; D005260:Female; D005263:Femoral Artery / Q000601:surgery; D006801:Humans; D007866:Leg / Q000098:blood supply*; D008297:Male; D008875:Middle Aged; D012756:Sheep; D015607:Stents; D014648:Varicose Veins; D014680:Veins / Q000637:transplantation*
vernacular_title: Ummantelte dilatierte oder variköse Venen als arterielles Bypasstransplantat: Experimentelle und erste klinische Ergebnisse.