منابع مشابه
Method for experimental constriction of arteries with polyvinyl alcohol sponge.
MANY experimental procedures for local reduction of an arterial lumen have been described. The purposes of experimental arterial stenosis have, in the past, included attempts to develop methods for gradual occlusion of diseased vessels, study of the effects of ischemia on various organs, especially the kidney, and simulation of coarctation of the aorta, as well as study of the effects of stenos...
متن کاملThe Polyvinyl Alcohol Sponge Model Implantation
Wound healing is a complicated, multistep process involving many cell types, growth factors and compounds(1-3). Because of this complexity, wound healing studies are most comprehensive when carried out in vivo. There are many in vivo models available to study acute wound healing, including incisional, excisional, dead space, and burns. Dead space models are artificial, porous implants which are...
متن کاملLate presentation of polyvinyl alcohol sponge (Ivalon) aortic graft failure.
A 20-year-old woman was found to have hypertension (160/100 mmHg) during a pregnancy in 1955. A diagnosis of coarctation of the aorta was confirmed and at operation in 1956 the coarctation was found to begin 2-5 cm below the origin of the left subclavian f artery and to extend 5 cm distally. After excision of the stenotic segment continuity was restored with an Ivalon graft, end-to-end anastomo...
متن کاملPolyvinyl alcohol sponge for embolotherapy: particle size and morphology.
The size and morphology of particulate polyvinyl alcohol (PVA) sponge prepared by a blender technique for embolotherapy were analyzed by light and scanning electron microscopy. Techniques for preparation and sizing of PVA sponge particles are described. Two types of particulate material, differing in both size and morphology, were found. Large particles (greater than 50 micron) had irregular sh...
متن کاملPolyvinyl pyrrolidone (PVP) in cataract surgery.
Early reformation of the anterior chamber after intraocular surgery is of paramount importance, its absence or delay leading to peripheral anterior synechiae and aphakic glaucoma (Troncoso, 1933; Kronfeld and Grossman, 1941; McLean, I94I; Meyer and Sternberg, 1950). Selinger (1937) injected air after cataract operations to restore the normal curvature of the cornea. He concluded that air preven...
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ژورنال
عنوان ژورنال: Annals of Surgery
سال: 1957
ISSN: 0003-4932
DOI: 10.1097/00000658-195704000-00007