Review Of Analysis And Salvage Techniques Of Difficult Biliary Cannulation During ERCP

Background:Endoscopic Retrograde Cholangio Pancreatography(ERCP)has been widely practised for the diagnosis and therapy of biliary disease.Successful biliary cannulation remains the most important for all subsequent therapeutic procedures such as biliary drainage and lithotripsy.How to improve the success rate of cannulation is still the focus of attention.Objective:So as to provide some references for the success biliary cannulation in ERCP better by techniques review current research in analyze the causes of failure and improving the success rate of biliary cannulation.Methods:In "selective biliary cannulation,difficult cannulation,precut sphincterotomy,Pancreatic duct occupation”and other keyword search to find out the related research of the success rate of biliary cannulation,at the same time summarized the timing of various methods and possible complications.Result and conclusion:At present,there are a lot of reports about the causes of difficult selective biliary cannulation and how to improve the success rate of biliary cannulation,integrated these results suggest that the causes of failure selective biliary cannulation including patient anatomy or pathology,skill and experience of the endoscopist,and availability of specialized accessories.precut sphincterotomy was applied to those who were unable to enter the papilla,and the pancreatic duct occupying method was applied to who repeated into the pancreatic duct.The two time ERCP was applied to the patients who were unable to succeed in bile duct intubation after the precutsphincterotomy,rendezvous techniques was applied to the biliary obstruction patients who failure of ERCP treatment.