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Esophageal biodegradable stents

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https://www.readbyqxmd.com/read/27650677/management-of-refractory-esophageal-stenosis-in-the-pediatric-age
#1
Fernando Alberca de Las Parras, María Navalón Rubio, Juan Egea Valenzuela
INTRODUCTION: Refractory esophageal stenosis (RES) is a major health problem in the pediatric population. Several techniques such as stent placement or C-mitomycin (CM) have been described as alternative treatments. We present our experience with both techniques, in our case with biodegradable stents (BS) and sometimes the association with stents and CM. MATERIAL AND METHODS: Six patients have been included: 2 post-operative fistulas in patients with type I esophageal atresia; 1 operated atresia without fistula; and 3 caustic strictures...
October 2016: Revista Española de Enfermedades Digestivas
https://www.readbyqxmd.com/read/27556067/biodegradable-esophageal-stents-in-benign-and-malignant-strictures-a-single-center-experience
#2
Dimitrios E Sigounas, Sandeep Siddhi, John N Plevris
BACKGROUND AND STUDY AIMS: Biodegradable (BD) esophageal stents were recently developed mainly for refractory benign strictures, but experience and available literature are limited. PATIENTS AND METHODS: This was a retrospective observational study. All patients who had BD stents inserted due to refractory benign esophageal strictures or malignant strictures, or were awaiting radical radiotherapy/chemotherapy or neo-adjuvant therapy and esophagectomy between March 2011 and July 2015 were included...
June 2016: Endoscopy International Open
https://www.readbyqxmd.com/read/27186033/literature-analysis-of-the-treatment-of-benign-esophageal-disease-with-stent
#3
Hang Zhao, Yongxin Zhou, Jing Feng, Wenli Wang, Yunqing Mei
To analyze the efficacy and safety of benign esophageal disease used biodegradable (BD) stent or metal stent. The English literatures of benign esophageal disease that were treated by biodegradable or metal stents implantation were retrieved and summarized. In all 323 benign esophageal disease, the most common etiologies were benign refractory stricture, surgical anastomotic stricture and esophageal fistula/leak/perforation, but the main characteristics between the two groups were not significantly different...
February 2016: Indian Journal of Surgery
https://www.readbyqxmd.com/read/27158397/a-novel-biodegradable-esophageal-stent-results-from-mechanical-and-animal-experiments
#4
Jin Liu, Liang Shang, Jiyong Liu, Chengyong Qin
Biodegradable esophageal stents eliminate stent retrieval, but usually induce hyperplasia. This study investigated the properties of a novel biodegradable stent in vitro and in vivo. The degradation of the novel stent was observed in phosphate buffered saline (PBS) for 8 weeks. The radial forces, pH values, morphology, and retention rate of the intrinsic viscosity (R[η]) of the new biodegradable stent were all evaluated. In vitro, the pH values remained constant for 4 weeks and declined from weeks 4 to 8. The biodegradable threads degraded and ruptured at 6 weeks...
2016: American Journal of Translational Research
https://www.readbyqxmd.com/read/27022391/a-comparison-of-a-fully-covered-and-an-uncovered-segmented-biodegradable-esophageal-stent-in-a-porcine-model-preclinical-evaluation-of-degradation-complications-and-tissue-reactions
#5
Yadong Feng, Chunhua Jiao, Yang Cao, Ye Zhao, Yanfang Chen, Lin Fang, Ruihua Shi
Aims. This study was to compare the degradation, complications, and tissue reactions of two segmented biodegradable esophageal stents in a porcine model. Methods. Uncovered biodegradable segmented stents and fully covered biodegradable segmented stents (FCBDS) were transplanted into the porcine esophagus lumen. Data on biodegradation, complications, and tissue reactions were collected and compared. Results. All animals kept good general conditions. No severe complications and stents migration occurred. Stents degradation commenced at week 3...
2016: Gastroenterology Research and Practice
https://www.readbyqxmd.com/read/26828759/natural-history-and-management-of-refractory-benign-esophageal-strictures
#6
Alessandro Repici, Aaron J Small, Aaron Mendelson, Manol Jovani, Loredana Correale, Cesare Hassan, Lorenzo Ridola, Andrea Anderloni, Elisa Chiara Ferrara, Michael L Kochman
BACKGROUND AND AIMS: The natural history of refractory benign esophageal strictures (RBES) is unclear, and surgery or percutaneous endoscopic gastrostomy (PEG) may be the only viable long-term options. The aim of the present study was to assess the long-term outcomes of patients with RBES. METHODS: Clinical data of consecutive patients with RBES treated in the previous 15 years in 2 tertiary-care referral academic centers with specialized interest in esophageal stricture management were retrospectively analyzed...
August 2016: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/26824424/esophageal-stents-when-and-how
#7
Toufic Kachaamy, Rahul Pannala
Esophageal stents are devices used to alleviate dysphagia and treat leaks and perforations. Successful esophageal stenting requires definition of the abnormal anatomy such as stricture length or location of the leak, proper stent selection and deployment. This requires detailed knowledge of characteristics of the currently available stents. Self-expanding metal stents whether fully or partially covered have become the mainstay of treatment of esophageal cancer-related dysphagia as they provide quick relief of symptoms and have a favorable safety and efficacy profile, compared to other modalities such as radiation, laser, and argon plasma coagulation...
June 2016: Minerva Gastroenterologica e Dietologica
https://www.readbyqxmd.com/read/26804182/stretch-induced-drug-delivery-from-superhydrophobic-polymer-composites-use-of-crack-propagation-failure-modes-for-controlling-release-rates
#8
Julia Wang, Jonah A Kaplan, Yolonda L Colson, Mark W Grinstaff
The concept of using crack propagation in polymeric materials to control drug release and its first demonstration are reported. The composite drug delivery system consists of highly-textured superhydrophobic electrosprayed microparticle coatings, composed of biodegradable and biocompatible polymers poly(caprolactone) and poly(glycerol monostearate carbonate-co-caprolactone), and a cellulose/polyester core. The release of entrapped agents is controlled by the magnitude of applied strain, resulting in a graded response from water infiltration through the propagating patterned cracks in the coating...
February 18, 2016: Angewandte Chemie
https://www.readbyqxmd.com/read/26528754/clinical-outcomes-following-stent-placement-in-refractory-benign-esophageal-stricture-a-systematic-review-and-meta-analysis
#9
REVIEW
Lorenzo Fuccio, Cesare Hassan, Leonardo Frazzoni, Rossella Miglio, Alessandro Repici
BACKGROUND AND AIMS: The management of refractory benign esophageal strictures (RBESs) is challenging. Stent placement has been proposed as a possible rescue strategy. We performed a systematic review and meta-analysis to examine the efficacy of this strategy in the long-term resolution of dysphagia. METHODS: PubMed, SCOPUS, and Google Scholar were searched (up to January 2015). Studies recruiting adults with RBES treated with stent placement were eligible. The success, adverse event, and migration rates were pooled by means of a random-effect model to obtain odds with a 95 % confidence interval (CI)...
February 2016: Endoscopy
https://www.readbyqxmd.com/read/26140097/endotherapy-of-leaks-and-fistula
#10
REVIEW
Mahesh Kumar Goenka, Usha Goenka
Perforations, leaks and fistula involving gastrointestinal (GI) tract are increasing encountered in clinical practice. There is a changing paradigm for their management with surgical approach being replaced by conservative approach including endoscopic therapy. Clips (through the scope and over the scope) and covered stent are front runners for endotherapy for GI leaks and fistula. Over the scope clips introduced recently, can treat larger defects compared to through the scope clips. Covered stents are suited for larger defects and those associated with luminal narrowing...
June 25, 2015: World Journal of Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/25992187/recent-advancement-of-therapeutic-endoscopy-in-the-esophageal-benign-diseases
#11
REVIEW
Robert Bechara, Haruhiro Inoue
Over the past 30 years, the field of endoscopy has witnessed several advances. With the advent of endoscopic mucosal resection, removal of large mucosal lesions have become possible. Thereafter, endoscopic submucosal resection was refined, permitting en bloc removal of large superficial neoplasms. Such techniques have facilitated the development of antireflux mucosectomy, a promising novel treatment for gastroesophageal reflux. The introduction and use of over the scope clips has allowed for endoscopic closure of defects in the gastrointestinal tract, which were traditionally treated with surgical intervention...
May 16, 2015: World Journal of Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/25685270/clinical-outcomes-of-self-expandable-stent-placement-for-benign-esophageal-diseases-a-pooled-analysis-of-the-literature
#12
Emo E van Halsema, Jeanin E van Hooft
AIM: To analyze the outcomes of self-expandable stent placement for benign esophageal strictures and benign esophageal leaks in the literature. METHODS: The PubMed, Embase and Cochrane databases were searched for relevant articles published between January 2000 and July 2014. Eight prospective studies were identified that analyzed the outcomes of stent placement for refractory benign esophageal strictures. The outcomes of stent placement for benign esophageal leaks, perforations and fistulae were extracted from 20 retrospective studies that were published after the inclusion period of a recent systematic review...
February 16, 2015: World Journal of Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/25399341/efficacy-and-histopathological-esophageal-wall-damage-of-biodegradable-esophageal-stents-for-treatment-of-severe-refractory-esophageal-anastomotic-stricture-in-a-child-with-long-gap-esophageal-atresia
#13
Yuichi Okata, Chieko Hisamatsu, Yuko Bitoh, Akiko Yokoi, Eiji Nishijima, Kosaku Maeda, Makiko Yoshida, Tsukasa Ishida, Takeshi Azuma, Hiromu Kutsumi
A case in which a self-expandable biodegradable (BD) esophageal stent was used for a refractory esophageal anastomotic stricture (EAS) in a 5-year-old female is presented. The patient underwent closure of a tracheoesophageal fistula and gastrostomy in the neonatal period. Esophagoesophagostomy was performed at 18 months of age after a multistaged extrathoracic esophageal elongation procedure. The patient developed refractory EAS and required repeated esophageal balloon dilation. Four sessions of esophageal BD stenting were performed from the age of 5-8 years...
December 2014: Clinical Journal of Gastroenterology
https://www.readbyqxmd.com/read/25133114/plastic-and-biodegradable-stents-for-complex-and-refractory-benign-esophageal-strictures
#14
REVIEW
Young Hee Ham, Gwang Ha Kim
Endoscopic stent placement is a well-accepted and effective alternative treatment modality for complex and refractory esophageal strictures. Among the currently available types of stents, the partially covered self-expanding metal stent (SEMS) has a firm anchoring effect, preventing stent migration and ensuring effective covering of a narrowed segment. However, hyperplastic tissue reaction driven by the uncovered mesh may prevent easy and safe stent removal. As an alternative, a fully covered SEMS decreases the recurrence of dysphagia caused by hyperplastic tissue ingrowth; however, it has a high migration rate...
July 2014: Clinical Endoscopy
https://www.readbyqxmd.com/read/25070907/biodegradable-stent-placement-before-neoadjuvant-chemoradiotherapy-as-a-bridge-to-surgery-in-patients-with-locally-advanced-esophageal-cancer
#15
Maarten W van den Berg, Daisy Walter, Elisabeth M G de Vries, Frank P Vleggaar, Mark I van Berge Henegouwen, Richard van Hillegersberg, Peter D Siersema, Paul Fockens, Jeanin E van Hooft
No abstract text is available yet for this article.
November 2014: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/24288220/in-vitro-evaluation-of-the-radial-and-axial-force-of-self-expanding-esophageal-stents
#16
Meike M C Hirdes, Frank P Vleggaar, Matthieu de Beule, Peter D Siersema
BACKGROUND AND STUDY AIMS: Technological innovation in esophageal stent design has progressed over the past decades, but the association between the mechanical properties of stent design and clinical outcome is still poorly understood. In this study the radial force and axial force of currently available stent designs were evaluated using an in vitro testing model. METHODS: A total of 10 partially and fully covered self-expanding metal stents (SEMSs), a self-expanding plastic stent (SEPS), and an uncovered biodegradable stent were evaluated...
December 2013: Endoscopy
https://www.readbyqxmd.com/read/24237947/enteral-stents-from-esophagus-to-colon
#17
REVIEW
Rajan Kochar, Nimeesh Shah
Because of significant advances in endoscopic techniques and the development of high-quality stents, endoscopic enteral stent placement is increasingly being performed for the management of malignant GI obstruction. Palliative stenting is now routinely performed for malignant esophageal, gastric, duodenal, and colon obstruction. In addition to palliative indications, preoperative stenting in the colon may be performed as a bridge to surgery to achieve immediate decompression and convert an emergent surgery into an elective, 1-stage procedure...
December 2013: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/24210965/mediastinal-abscess-and-esophageal-stricture-following-voice-prosthesis-insertion
#18
Corrado Bozzo, Francesco Meloni, Mario Trignano, Stefano Profili
The use of a tracheo-esophageal voice prosthesis is a well-established procedure to restore the voice in total laryngectomees. The insertion of the prosthesis is not a risk-free procedure, various complications having been reported especially in irradiated patients. Here described is a case of an esophageal rupture after secondary tracheo-esophageal puncture with mediastinal abscess in a patient previously treated with pharyngo-laryngectomy and subsequent radiotherapy for a left pyriform sinus carcinoma, which required immediate surgical drainage through a left cervical approach...
April 2014: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/23869412/esophageal-stenting-for-treatment-of-refractory-benign-esophageal-strictures-in-dogs
#19
N Lam, C Weisse, A Berent, J Kaae, S Murphy, M Radlinsky, K Richter, M Dunn, K Gingerich
BACKGROUND: Benign esophageal strictures can recur despite multiple dilatation procedures and palliative management can be challenging. OBJECTIVE: To describe the technique and determine the outcome of esophageal stenting for treatment of refractory benign esophageal strictures (RBES) in dogs. ANIMALS: Nine dogs with RBES. METHODS: Retrospective review of records for dogs with RBES. Indwelling intraluminal esophageal stents were placed transorally with endoscopy, fluoroscopic guidance, or both...
September 2013: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/23770223/a-highly-flexible-paclitaxel-loaded-poly-%C3%AE%C2%B5-caprolactone-electrospun-fibrous-membrane-covered-stent-for-benign-cardia-stricture
#20
Yueqi Zhu, Changmin Hu, Bin Li, Huilin Yang, Yingsheng Cheng, Wenguo Cui
In benign esophageal strictures, inflammation reaction and tissue hyperplasia after stent placement greatly limit the stent retention time and affect subsequent scar formation, which is one of the main influences on long-term recurrence rate. A newly developed biodegradable electrospun drug-fiber-coated stent (DFCS) was fabricated to inhibit inflammation and scar formation. The electrospun paclitaxel/poly(ε-caprolactone) (PCL) fibers integrally covered the bare stent using the rotating collection method. The paclitaxel entrapment did not significantly affect the physical properties of electrospun PCL fibrous membranes...
September 2013: Acta Biomaterialia
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