Biomaterial Database

Endoscopic stent configuration and bile flow rates in a variable diameter bile duct model. 1990

D Scheeres, and W O'Brien, and L Ponsky, and J Ponsky

Department of Surgery, Mount Sinai Medical Center, Cleveland, Ohio.

Endoscopically placed biliary stents are used in the treatment of biliary strictures and obstruction. Patency of the stent is related to bile flow rate through the stent. The purpose of this study was to examine the influence of stent diameter, configuration, and common duct diameter on bile flow rates. Flow rates were examined in straight and pigtail stents, 7 Fr and 10 Fr, and in a 1 cm and 2.3 cm diameter CBD model. Bile-flow rates were greater in the straight and 10 Fr stents. Bile-duct diameter had no influence on flow rate in pigtail stents. Though flow rates decreased with straight stents in bile ducts of increasing diameter, the absolute flow rates always remained greater in the straight stents when compared to the pigtail stents. We conclude that straight stents, because of greater flow rates, are to be preferred over pigtail stents for the treatment of biliary obstruction in dilated and nondilated systems.

UI	MeSH Term	Description	Entries
D008954	Models, Biological	Theoretical representations that simulate the behavior or activity of biological processes or diseases. For disease models in living animals, DISEASE MODELS, ANIMAL is available. Biological models include the use of mathematical equations, computers, and other electronic equipment.	Biological Model,Biological Models,Model, Biological,Models, Biologic,Biologic Model,Biologic Models,Model, Biologic
D002779	Cholestasis	Impairment of bile flow due to obstruction in small bile ducts (INTRAHEPATIC CHOLESTASIS) or obstruction in large bile ducts (EXTRAHEPATIC CHOLESTASIS).	Bile Duct Obstruction,Biliary Stasis,Bile Duct Obstructions,Biliary Stases,Cholestases,Duct Obstruction, Bile,Duct Obstructions, Bile,Obstruction, Bile Duct,Obstructions, Bile Duct,Stases, Biliary,Stasis, Biliary
D004724	Endoscopy	Procedures of applying ENDOSCOPES for disease diagnosis and treatment. Endoscopy involves passing an optical instrument through a small incision in the skin i.e., percutaneous; or through a natural orifice and along natural body pathways such as the digestive tract; and/or through an incision in the wall of a tubular structure or organ, i.e. transluminal, to examine or perform surgery on the interior parts of the body.	Endoscopic Surgical Procedures,Surgical Procedures, Endoscopic,Endoscopic Surgical Procedure,Endoscopy, Surgical,Surgical Endoscopy,Surgical Procedure, Endoscopic,Procedure, Endoscopic Surgical,Procedures, Endoscopic Surgical
D004867	Equipment Design	Methods and patterns of fabricating machines and related hardware.	Design, Equipment,Device Design,Medical Device Design,Design, Medical Device,Designs, Medical Device,Device Design, Medical,Device Designs, Medical,Medical Device Designs,Design, Device,Designs, Device,Designs, Equipment,Device Designs,Equipment Designs
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D001652	Bile Ducts	The channels that collect and transport the bile secretion from the BILE CANALICULI, the smallest branch of the BILIARY TRACT in the LIVER, through the bile ductules, the bile ducts out the liver, and to the GALLBLADDER for storage.	Bile Duct,Duct, Bile,Ducts, Bile
D015607	Stents	Devices that provide support for tubular structures that are being anastomosed or for body cavities during skin grafting.	Stent