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Previous studies indicated that covered stents are less likely to become occluded in comparison to bare stents. While the probability of occlusions caused by tumor in-growth is less in covered stents, they are more likely to spontaneously migrate to a position that is distal to the original deployment site. However, newer covered stents with improved designs, such as the partially covered double bare metallic stent used for this study, include features to mitigate the migration issue. The purpose of this study is to confirm whether the difference in patency rate between regular covered stents and bare stents, which has already been well established by existing studies, is also reproducible when double covered stents are compared against double bare stents.
Malignant obstructive jaundice is a common complication of advanced stage cholangiocarcinoma, GB cancer, and pancreatic cancer. In biliary stricture by malignancy, biliary drainage with placement of self-expanding metal stent (SEMS) for palliation is the therapy of choice in these patients. When compared to plastic stents, SEMS present a significantly decreased risk of recurrent biliary obstruction. SEMS are also more cost-effective than plastic stents in patients with a life expectancy of longer than 4 months. However, despite their numerous benefits, SEMS become occluded in up to 50 % of patients in the first 6-8 months. In order to minimize the occurrence of this issue, covered stents were developed. Previous studies indicated that covered stents are less likely to become occluded in comparison to bare stents. While the probability of occlusions caused by tumor in-growth is less in covered stents, they are more likely to spontaneously migrate to a position that is distal to the original deployment site. However, newer covered stents with improved designs, such as the partially covered double bare metallic stent used for this study, include features to mitigate the migration issue. The purpose of this study is to confirm whether the difference in patency rate between regular covered stents and bare stents, which has already been well established by existing studies, is also reproducible when double covered stents are compared against double bare stents.
Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment
SEMS(self-expandable metallic stent), Stenting by ERCP (endoscopic retrograde cholangiopancreatography)
Severance Hospital, Yonsei University
Korea, Republic of
Published on BioPortfolio: 2016-10-19T02:38:21-0400
This study looks in to the rate of biliary stent dysfunction for plastic and metallic stents in patients who need biliary drainage due to a tumor in pancreas before possible pancreaticoduo...
The overall median survival of nonresectable malignant hilar obstruction in most series has been less than 6 months. Most patients with malignant hilar obstruction present with advanced di...
The purpose of this prospective, randomized multicenter study is to determine whether there is any difference in stent patency of covered metallic stents in terms of stent positioning, abo...
The aim of this animal study is determining the technical feasibility of the novel flower-type covered self-expandable metal stent (F-CSEMS) and investigating whether the novel flower-type...
This study is aimed to determine factors leading to obstructive granulation tissue formation after placement of Self-Expandable Metallic Stent (SEMS) in patients with benign tracheal disea...
The use of self-expandable metallic stents (SEMS) in benign airway disease was the object of a boxed warning from the United States Food and Drug Administration in 2005 due to the risk of stent-relate...
Self-expandable metal stents (SEMSs) are used for the management of certain esophageal conditions such as strictures, perforations, and fistulae. These can be placed using fluoroscopic control, endosc...
Background and study aims We designed a new 7-Fr plastic stent for treating self-expandable metal stent (SEMS) obstruction in patients with malignant hilar biliary obstruction (MHBO) via endoscopic ...
Gastroduodenal stenting using self-expandable metallic stents (SEMSs) represents a viable endoscopic option for palliative treatment of gastric outlet obstruction (GOO), less invasive relative to surg...
Endoscopic retrograde cholangiopancreatography (ERCP) with stent placement is used for the management of many pancreaticobiliary disorders. It is generally safe with a few short-term complications. Th...
Cylindrical metallic tubes that are inserted to hold open a structure in order to treat vascular, bile duct, esophageal and other tubular organ constrictions.
Fiberoptic endoscopy designed for duodenal observation and cannulation of VATER'S AMPULLA, in order to visualize the pancreatic and biliary duct system by retrograde injection of contrast media. Endoscopic (Vater) papillotomy (SPHINCTEROTOMY, ENDOSCOPIC) may be performed during this procedure.
A type of surgical portasystemic shunt to reduce portal hypertension with associated complications of esophageal varices and ascites. It is performed percutaneously through the jugular vein and involves the creation of an intrahepatic shunt between the hepatic vein and portal vein. The channel is maintained by a metallic stent. The procedure can be performed in patients who have failed sclerotherapy and is an additional option to the surgical techniques of portocaval, mesocaval, and splenorenal shunts. It takes one to three hours to perform. (JAMA 1995;273(23):1824-30)
Incision of Oddi's sphincter or Vater's ampulla performed by inserting a sphincterotome through an endoscope (DUODENOSCOPE) often following retrograde cholangiography (CHOLANGIOPANCREATOGRAPHY, ENDOSCOPIC RETROGRADE). Endoscopic treatment by sphincterotomy is the preferred method of treatment for patients with retained or recurrent bile duct stones post-cholecystectomy, and for poor-surgical-risk patients that have the gallbladder still present.
A mixture of metallic elements or compounds with other metallic or metalloid elements in varying proportions.
Acute Coronary Syndromes ACS
Acute Coronary Syndromes (ACS) is an umbrella term for situations where the blood supplied to the heart muscle is suddenly blocked. Treatment for acute coronary syndrome includes medicines and a procedure known as angioplasty, during which doctors inflat...
Cancer is not just one disease but many diseases. There are more than 100 different types of cancer. Most cancers are named for the organ or type of cell in which they start - for example, cancer that begins in the colon is called colon cancer; cancer th...
The pancreas secretes a number of important hormones into the digestive tract and the blood stream. Cancers are most commonly exocrine than endocrine (neuroendocrine) tumors. Functional tumors secrete hormones; Insulinoma, Gastrinoma, Somatostatinoma, VI...