Spectroscopic andMechanicalEvaluation ofThinFilmCommonlyUsed forBandingCongenitalPortosystemicShunts inDogs

Abstract

Thin film from most sources was not consistent with cellophane. Autoclave sterilization is the best way to preserve the strength of wet cellophane.

Long‐term clinical outcomes of dogs with single congenital extrahepatic portosystemic shunts attenuated with thin film banding or ameroid ring constrictors

“…Gradual attenuation of a single CEHPSS is considered the treatment of choice and is associated with a longer survival time compared with medical management . Several widely used methods of CEHPSS attenuation in dogs have been described, including cellophane banding (CB), thin film banding (TFB) with material not consisting of regenerated cellulose, and ameroid ring constrictor (ARC) application …”

“…Cellophane is known to incite an inflammatory reaction similar to a chronic foreign body, leading to thrombus formation and gradual attenuation when placed circumferentially around a vessel . A recent study determined that several commercially available thin films labeled as cellophane used in veterinary medicine for gradual attenuation of CEHPSS were highly variable in their structural and molecular properties . Only one of four thin films was consistent with a regenerated cellulose‐based material, and, among the others, two were polyolefin fiber, and one was polyester .…”

“…A recent study determined that several commercially available thin films labeled as cellophane used in veterinary medicine for gradual attenuation of CEHPSS were highly variable in their structural and molecular properties . Only one of four thin films was consistent with a regenerated cellulose‐based material, and, among the others, two were polyolefin fiber, and one was polyester . In addition, the composition of CB used in two previous studies was unclear, with neither product monograph information nor compositional analysis information described …”

“…1,2 Several widely used methods of CEHPSS attenuation in dogs have been described, including cellophane banding (CB), thin film banding (TFB) with material not consisting of regenerated cellulose, and ameroid ring constrictor (ARC) application. [3][4][5][6][7] Cellophane banding was first reported in dogs for the gradual attenuation of CEHPSS in 1990. 8 Cellophane is known to incite an inflammatory reaction similar to a chronic foreign body, leading to thrombus formation and gradual attenuation when placed circumferentially around a vessel.…”

In vitro development and evaluation of a polyacrylic acid–silicone device intended for gradual occlusion of portosystemic shunts in dogs and cats

“…2 Surgical attenuation is the only definitive treatment for portosystemic shunts and has been associated with better long-term survival than medical management. 9 Moreover, both types of gradual occlusion devices involve either an outer stainless steel ring or metal hemostatic clips, making postoperative confirmation of vessel closure via CT difficult. However, both of these devices close the vessel primarily by inflammation and thrombosis 5,6 rather than In vitro development and evaluation of a polyacrylic acid-silicone device intended for gradual occlusion of portosystemic shunts in dogs and cats by direct occlusion.…”