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Biliary stent

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https://www.readbyqxmd.com/read/28917130/bending-behaviors-of-fully-covered-biodegradable-polydioxanone-biliary-stent-for-human-body-by-finite-element-method
#1
Yanhui Liu, Guoqing Zhu, Huazhe Yang, Conger Wang, Peihua Zhang, Guangting Han
This paper presents a study of the bending flexibility of fully covered biodegradable polydioxanone biliary stents (FCBPBs) developed for human body. To investigate the relationship between the bending load and structure parameter (monofilament diameter and braid-pin number), biodegradable polydioxanone biliary stents derived from braiding method were covered with membrane prepared via electrospinning method, and nine FCBPBSs were then obtained for bending test to evaluate the bending flexibility. In addition, by the finite element method, nine numerical models based on actual biliary stent were established and the bending load was calculated through the finite element method...
August 24, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28916322/intraductal-transanastomotic-stenting-in-duct-to-duct-biliary-reconstruction-after-living-donor-liver-transplantation-a-randomized-trial
#2
Ky Santosh Kumar, Johns Shaji Mathew, Dinesh Balakrishnan, Viju Kumar Bharathan, Binoj Sivasankara Pillai Thankamony Amma, Unnikrishnan Gopalakrishnan, Ramachandran Narayana Menon, Puneet Dhar, Sudheer Othiyil Vayoth, Sudhindran Surendran
BACKGROUND: Biliary complications continue to be the 'Achilles heel' of living donor liver transplantation (LDLT). The use of biliary stents in LDLT to reduce biliary complication is a controversial issue. We performed a randomized trial to study the impact of intraductal biliary stents on postoperative biliary complications following LDLT. STUDY DESIGN: Of the 94 LDLT's, that were performed during a period of 16 months, ABO incompatible transplants, left lobe grafts, ≥3 ducts on the graft and those requiring bilio-enteric drainage were excluded...
September 12, 2017: Journal of the American College of Surgeons
https://www.readbyqxmd.com/read/28913619/bile-duct-obstruction-in-a-patient-treated-with-nivolumab-as-second-line-chemotherapy-for-advanced-non-small-cell-lung-cancer-a-case-report
#3
Jumpei Kashima, Yusuke Okuma, Ryoko Shimizuguchi, Kazuro Chiba
Immune checkpoint inhibitors (ICIs) are becoming a standard therapy for non-small-cell lung cancer in the advanced stage. As these ICIs become widely available in clinical practice, immune-related adverse effects will become more common. Here we report a patient with lung adenocarcinoma who was treated with nivolumab and developed obstruction because of biliary inflammation. A 63-year-old Japanese man having lung adenocarcinoma with pleural dissemination complained of epigastric pain on the fifth cycle of nivolumab...
September 14, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28906357/ercp-related-complication-is-not-the-only-cause-of-gi-bleeding-in-post-liver-transplantation-patients-a-case-report
#4
Zhen Ding, Xue-Lian Tang, Rong Lin, Chaoqun Han, Jun Liu
RATIONALE: Endoscopic retrograde cholangiopancreatography (ERCP) is the treatment of choice for biliary complications in liver transplantation (LT) recipients as it is both diagnostic and therapeutic. The specific risks following ERCP among LT recipients have not been well studied. PATIENT CONCERNS: A 56-year-old man with a history of orthotopic LT underwent endoscopic retrograde cholangiopancreatography (ERCP) as a treatment of biliary strictures, whereby a plastic stent was implanted...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28902972/covered-duodenal-self-expandable-metal-stents-prolong-biliary-stent-patency-in-double-stenting-the-largest-series-of-bilioduodenal-obstruction
#5
Yasuki Hori, Itaru Naitoh, Kazuki Hayashi, Hiromu Kondo, Michihiro Yoshida, Shuya Shimizu, Atsuyuki Hirano, Fumihiro Okumura, Tomoaki Ando, Naruomi Jinno, Hiroki Takada, Shozo Togawa, Takashi Joh
BACKGROUND: Endoscopic biliary and duodenal stenting (DS; double stenting) is widely accepted as a palliation therapy for malignant bilioduodenal obstruction. The aim of the current study was to investigate the patency and adverse events of duodenal and biliary stents in patients with DS. METHODS: Patients who underwent DS from April 2004 to March 2017 were analyzed retrospectively with regard to clinical outcomes and predictive factors of recurrent biliary and duodenal obstruction (recurrent biliary obstruction [RBO] and recurrent duodenal obstruction [RDO])...
September 13, 2017: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28898571/risk-factors-of-post-ercp-pancreatitis-in-biliary-type-sphincter-of-oddi-dysfunction-in-japanese-patients
#6
Hiroyuki Miyatani, Satohiro Matsumoto, Hirosato Mashima
OBJECTIVES: Suspected sphincter of Oddi dysfunction (SOD) is a well-known risk factor for post-endoscopic retrograde cholangiopancreatography (ERCP) pancreatitis (PEP). The indication of ERCP for suspected SOD patients was very low in Japan compared to other countries. Therefore, the risk of PEP may be different in Japanese SOD patients. The objective of this study was to evaluate the risk of PEP in suspected biliary type SOD in Japan. METHODS: From December 1996 to January 2017, 72 patients were suspected to have biliary type SOD by questionnaire, liver function tests, hepatobiliary scintigraphy, abdominal ultrasonography, upper gastrointestinal endoscopy, endoscopic ultrasonography, and magnetic resonance cholangiopancreatography...
September 12, 2017: Journal of Digestive Diseases
https://www.readbyqxmd.com/read/28879225/preoperative-biliary-drainage-by-plastic-or-self-expandable-metal-stents-in-patients-with-periampullary-tumors-results-of-a-randomized-clinical-study
#7
Greger Olsson, Farshad Frozanpor, Lars Lundell, Lars Enochsson, Christoph Ansorge, Marco Del Chiaro, Marcus Reuterwall-Hansson, Alysha Shetye, Urban Arnelo
BACKGROUND AND STUDY AIMS : Preoperative biliary drainage in patients with periampullary tumors and jaundice has been popularized to improve the quality of life and minimize the risks associated with subsequent radical surgery. The aim of this study was to investigate the possible superiority of self-expandable metal stents (SEMS) over plastic stents, by comparing the amount of bacteria in intraoperatively collected bile and using this variable as a proxy for the efficacy of the respective biliary drainage modalities...
September 2017: Endoscopy International Open
https://www.readbyqxmd.com/read/28875690/use-of-fully-covered-self-expanding-metal-stents-for-benign-biliary-etiologies-a-large-multi-center-experience
#8
Abdul Haseeb, Ali Siddiqui, Linda J Taylor, Alyssa Mills, Thomas E Kowalski, David E Loren, Jessica Dahmus, Silpa Yalamanchili, Christopher Cao, Andrew Canakis, Tayebah Mumtaz, Meet Parikh, Douglas G Adler
INTRODUCTION: Fully-covered self-expandable metal stents (FCSEMS) have been used in benign biliary diseases although reported data is limited. These devices are most commonly used to treat biliary leaks, strictures, or both. The aim of this study was to evaluate effectiveness of FCSEMS in treating benign biliary disease and recognize the associated complications. METHODS: We performed a multi-center longitudinal retrospective cohort study of patients with benign biliary disease needing FCSEMS between 2011 and 2016...
September 5, 2017: Minerva Gastroenterologica e Dietologica
https://www.readbyqxmd.com/read/28874623/factors-affecting-the-conversion-to-open-surgery-during-laparoscopic-cholecystectomy-in-patients-with-cholelithiasis-undergoing-ercp-due-to-choledocholithiasis
#9
Hamza Cinar, Gökhan S Ozbalci, Ismail A Tarim, Kagan Karabulut, Tugrul Kesicioglu, Ayfer K Polat, Kenan Erzurumlu, Murat Derebey
BACKGROUND: The rate of conversion to open surgery is high in laparoscopic cholecystectomy (LC) after Endoscopic Retrograde Cholangiopancreotocography (ERCP). The present study aimed to evaluate the risk factors associated with the conversion to open cholecystectomy and minimize the rate of conversion to open surgery. METHODS: A total of 157 patients admitted to the Ondokuz Mayıs University Medical Faculty Hospital due to cholelithiasis and choledocholithiasis between January 2002 and December 2012, and they receiving laparoscopic cholecystectomy were included in the study...
2017: Annali Italiani di Chirurgia
https://www.readbyqxmd.com/read/28868226/recurrent-gastric-ulcer-and-cholangitis-caused-by-ectopic-drainage-of-the-bile-duct-into-the-stomach
#10
Katrin Bauer, Christof Keller
We report a case of recurrent gastritis with pyloric stenosis and cholangitis due to a rare variation in bile duct anatomy. A 72-year-old female patient showed recurrent gastral ulcers and biliary colic with cholangitis caused by gallstones in the main bile duct with an ectopic orifice in the prepyloric region and concurrent inflammatory pyloric stenosis. After temporarily successful endoscopic treatment with stenting and pyloric dilatation, the patient suffered from recurrent cholangitis. Finally, the abnormal biliary anatomy required surgical treatment with biliodigestive anastomosis...
2017: GMS Interdisciplinary Plastic and Reconstructive Surgery DGPW
https://www.readbyqxmd.com/read/28867074/association-of-covered-metallic-stents-with-cholecystitis-and-stent-migration-in-malignant-biliary-stricture
#11
Sunguk Jang, Tyler Stevens, Mansour Parsi, Rocio Lopez, Gregory Zuccaro, John Dumot, John J Vargo
BACKGROUND: ERCP with self-expandable metallic stent (SEMS) placement provides reliable and durable relief of malignant biliary obstruction. Our objective was to compare efficacy and adverse outcomes between uncovered SEMSs (USEMSs) and covered SEMSs (CSEMSs). METHODS: A retrospective cohort study was performed of all consecutive patients who underwent ERCP with SEMS placement for the management of a malignant bile duct stricture. Comparative analyses on clinical success, patency duration, stent dysfunction and adverse outcomes were performed...
August 31, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28866899/covered-biliary-stents-with-proximal-bare-stent-extension-for-the-palliation-of-malignant-biliary-disease-can-we-reduce-tumour-overgrowth-rate
#12
Miltiadis Krokidis, Adam Hatzidakis
BACKGROUND: Covered biliary stents have shown significant effectiveness in the palliative management of patients with malignant biliary disease due to prevention of tumour ingrowth. However, stent dysfunction may still occur due to growth of tumour at the borders of the covered stent (tumour overgrowth). The aim of this study is to assess the effectiveness of a bare extension in the prevention of tumour overgrowth when covered stents are used in the palliative treatment of malignant biliary strictures...
August 2017: Annals of Palliative Medicine
https://www.readbyqxmd.com/read/28860900/portal-vein-stenting-for-delayed-jejunal-varix-bleeding-associated-with-portal-venous-occlusion-after-hepatobiliary-and-pancreatic-surgery
#13
Dongho Hyun, Kwang Bo Park, Sung Ki Cho, Hong Suk Park, Sung Wook Shin, Sung Wook Choo, Young Soo Do, In Wook Choo, Dong Wook Choi
OBJECTIVE: The study aimed to describe portal stenting for postoperative portal occlusion with delayed (≥ 3 months) variceal bleeding in the afferent jejunal loop. MATERIALS AND METHODS: Eleven consecutive patients (age range, 2-79 years; eight men and three women) who underwent portal stenting between April 2009 and December 2015 were included in the study. Preoperative medical history and the postoperative clinical course were reviewed. Characteristics of portal occlusion and details of procedures were also investigated...
September 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/28858292/endoscopic-drainage-of-50-of-liver-in-malignant-hilar-biliary-obstruction-using-metallic-or-fenestrated-plastic-stents
#14
Tossapol Kerdsirichairat, Mustafa A Arain, Rajeev Attam, Brooke Glessing, Yan Bakman, Stuart K Amateau, Martin L Freeman
OBJECTIVES: Endoscopic drainage of complex hilar tumors has generally resulted in poor outcomes. Drainage of >50% of liver volume has been proposed as optimal, but not evaluated using long multifenestrated plastic stents (MFPS) or self-expanding metal stents (SEMS). We evaluated outcomes of endoscopic drainage of malignant hilar strictures using optimal strategy and stents, and determined factors associated with stent patency, survival, and complications. METHODS: Cross-sectional study was conducted at an academic center over 5 years...
August 31, 2017: Clinical and Translational Gastroenterology
https://www.readbyqxmd.com/read/28854773/bile-duct-patency-maintained-after-intraductal-radiofrequency-ablation-in-a-case-of-hepatocellular-cholangiocarcinoma-with-bile-duct-invasion
#15
Sung Yong Han, Geun Am Song, Dong Uk Kim, Dong Hoon Baek, Moon Won Lee, Gwang Ha Kim
Combined hepatocellular-cholangiocarcinoma (HCC-CC) with bile duct invasion (BDI) is rare. In unresectable cases, biliary stent placement and photodynamic therapy (PDT) are used for resolving obstructive jaundice. However, stent occlusion remains problematic, and PDT is expensive and time-consuming. Intraductal radiofrequency ablation (RFA) is an emerging procedure for palliation in these patients. It has potential benefits including less expense, lower rates of severe complication, longer maintenance of ductal patency, and easier technique compared with PDT or stenting alone...
August 31, 2017: Clinical Endoscopy
https://www.readbyqxmd.com/read/28846486/flexible-automation-system-for-determination-of-elemental-composition-of-incrustations-in-clogged-biliary-endoprostheses-using-icp-ms
#16
Heidi Fleischer, Kinjal Ramani, Koffi Blitti, Thomas Roddelkopf, Mareike Warkentin, Detlef Behrend, Kerstin Thurow
Automation systems are well established in industries and life science laboratories, especially in bioscreening and high-throughput applications. An increasing demand of automation solutions can be seen in the field of analytical measurement in chemical synthesis, quality control, and medical and pharmaceutical fields, as well as research and development. In this study, an automation solution was developed and optimized for the investigation of new biliary endoprostheses (stents), which should reduce clogging after implantation in the human body...
August 1, 2017: SLAS Technology
https://www.readbyqxmd.com/read/28846154/-biopsy-forceps-fixation-novel-trick-of-the-trade-for-duodenal-guidewire-unlooping
#17
V Zimmer
Bile duct stenting remains the clinical mainstay for establishing biliary drainage in malignant or benign strictures with successful and stable deep guidewire passage as the sine qua non. Duodenal loop formation of an effectively inserted guidewire may occur occasionally and threatens the procedural success in day-to-day ERC practice, which may even be more troublesome after cumbersome guidewire passage in the first place. Attempts to rescue wire positioning often fail, since the wire is typically in a dead angle with a tendency to completely slip out of postion no matter how the scope or cannula is navigated...
August 28, 2017: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/28843583/long-term-outcome-of-eus-guided-choledochoduodenostomy-using-a-lumen-apposing-metal-stent-for-malignant-distal-biliary-obstruction-a-prospective-multicenter-study
#18
Takayoshi Tsuchiya, Anthony Yuen Bun Teoh, Takao Itoi, Kenji Yamao, Kazuo Hara, Yousuke Nakai, Hiroyuki Isayama, Masayuki Kitano
BACKGROUND AND AIMS: EUS-guided choledochoduodenostomy (EUS-CDS) using conventional tubular stents has been successfully performed. However, EUS-CDS carries a high risk of bile leakage with attendant adverse events. This study aimed to prospectively evaluate the long-term outcome of EUS-CDS using a dedicated lumen-apposing metal stent (LAMS). METHODS: Nineteen patients (mean age, 70.6 years; 12 men) with unresectable malignant diseases were treated in 5 tertiary referral centers...
August 23, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28837510/use-of-fully-covered-self-expanding-metal-biliary-stents-in-pediatrics-a-case-series
#19
Jacob A Mark, Cara L Mack, Ahmed I Marwan, Robert E Kramer
OBJECTIVE: Endoscopic retrograde cholangiopancreatography (ERCP) is used to manage biliary pathology in pediatric patients. Plastic biliary stents have been utilized in this population for obstructive lesions and bile leaks, however they are sometimes not effective due to migration, occlusion, or ineffective sealing. Fully covered self-expanding metal stents (FCSEMS) have larger diameters making them more suitable for some situations. However, their use in pediatrics has not been defined...
August 23, 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28836515/endoscopic-ultrasound-guided-antegrade-metal-stent-placement-using-the-stent-in-stent-technique-in-a-patient-with-malignant-hilar-biliary-obstruction
#20
Hiroshi Yamauchi, Mitsuhiro Kida, Shiro Miyazawa, Kosuke Okuwaki, Tomohisa Iwai, Hiroshi Imaizumi, Wasaburo Koizumi
No abstract text is available yet for this article.
August 24, 2017: Endoscopic Ultrasound
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