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Trachea stent

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https://www.readbyqxmd.com/read/28070690/reconstruction-of-defects-of-the-trachea
#1
Margot Den Hondt, Jan Jeroen Vranckx
The trachea has a complex anatomy to fulfill its tasks. Its unique fibro-cartilaginous structure maintains an open conduit during respiration, and provides vertical elasticity for deglutition, mobility of the neck and speech. Blood vessels pierce the intercartilaginous ligaments to perfuse the ciliated epithelium, which ensures effective mucociliary clearance. Removal of a tracheal segment affected by benign or malignant disease requires airtight restoration of the continuity of the tube. When direct approximation of both tracheal ends is no longer feasible, a reconstruction is needed...
February 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/28024711/-progressive-hematoma-in-anterior-neck-after-endovascular-treatment-of-middle-cerebral-artery-aneurysm
#2
Aysun Ankay Yilbas, Cigdem Kanburoglu, Filiz Uzumcugil, Coskun Cifci, Ozge Ozen Saralp, Heves Karagoz, Seda Banu Akinci, Anil Arat
BACKGROUND: Cervical hematomas can lead to airway compromise, a life threatening condition, regardless of the cause. The following case is the first presentation of cervical hematoma as a complication of endovascular treatment of middle cerebral artery aneurysm. CASE REPORT: A 49 year-old woman was scheduled for stent placement under general anesthesia for middle cerebral artery aneurysm. Few days before intervention, acetyl salicylic acid and clopidogrel treatment was started...
December 23, 2016: Revista Brasileira de Anestesiologia
https://www.readbyqxmd.com/read/28018811/management-of-postintubational-tracheal-injury-by-endoscopic-stent-placement-case-report-and-review-of-the-literature
#3
Christian Geltner, Rudolf Likar, Klaus Hausegger, Markus Rauter
Endobronchial stent placement is a novel therapy for treatment of iatrogenic tracheal tears. A review of the available literature shows surgery and long-term intubation being the established treatment strategy. We describe the case of a 64-year-old woman with a tracheal rupture following endotracheal intubation for routine surgery. Pneumo-mediastinum and chest pain were the predominant symptoms. She was treated with a covered self-expandable metal stent that closed the tear and led to immediate symptom relief...
December 2016: Thoracic and Cardiovascular Surgeon Reports
https://www.readbyqxmd.com/read/27978871/-interventional-bronchoscopies-for-the-treatment-of-112-cases-with-complex-malignant-central-airway-diseases-involved-in-bifurcation
#4
Hongwu Wang, Nan Zhang, Dongmei Li, Meimei Tao, Jieli Zhang, Hang Zou, Yunzhi Zhou, Sujuan Liang, Xiuyun Bai
BACKGROUND: It is very difficult to deal with the comprehensive central airway diseases, especially the malignant airway obstruction. The aim of this study is to explore the clinical effects of multiple interventional bronchoscopies for the treatment of 112 cases with comprehensive malignant central airway diseases so as to evaluate the clinical applications of thermoablation and cryosurgery. METHODS: The 112 cases with malignant airway diseases retrospectively reviewed for bronchoscopic interventions performed in more than two lesions of carina and/or bifurcation...
December 20, 2016: Zhongguo Fei Ai za Zhi, Chinese Journal of Lung Cancer
https://www.readbyqxmd.com/read/27938547/-effect-of-self-expanding-bare-metal-stents-of-different-diameters-on-the-trachea-of-dogs
#5
T Wang, J Zhang, J Wang, Y H Pei, X J Qiu, Y L Wang
Objective: To study the effect of self-expanding bare metal stents on the trachea of dogs, and therefore to provide useful information for choice of airway stents by interventional physicians. Methods: In this experiment, 8 beagles were randomly divided into 4 groups. Four self-expanding metal stents of different diameters (16, 18, 20 and 22 mm, respectively) were placed in the trachea of these beagles for 3 months and their impacts on normal trachea were observed. Results: In the 16 mm stent group (stent-to-airway diameter ratio 103%), good epithelialization was observed and the tracheal structure had no significant damage...
December 12, 2016: Chinese Journal of Tuberculosis and Respiratory Diseases
https://www.readbyqxmd.com/read/27873304/stent-induced-tracheal-stenosis-can-be-predicted-by-il-8-expression-in-rabbits
#6
Elena Arellano-Orden, Carolina Serrano, Ana Montes-Worboys, Verónica Sánchez-López, Alicia Laborda, Fernando Lostalé, Celia Lahuerta, Francisco Rodríguez-Panadero, Miguel Ángel de Gregorio
BACKGROUND: Bare metal stents may cause complications like fibrous encapsulation, granulation and tracheal stenosis. We investigated the behaviour of three commercially available stents in vivo (rabbits) and in vitro (coculture of those stents with epithelial and fibroblast cell lines). Also, we investigated whether development of tracheal stenosis could be predicted by any biological marker. MATERIALS AND METHODS: The tracheae of 30 rabbits were implanted with either nitinol stents, with or without paclitaxel elution, or a cobalt-based stent...
January 2017: European Journal of Clinical Investigation
https://www.readbyqxmd.com/read/27863670/selection-and-fabrication-of-a-non-woven-polycarbonate-urethane-cover-for-a-tissue-engineered-airway-stent
#7
Weiluan Chen, Johanna Clauser, Anja Lena Thiebes, Donnacha J McGrath, Peter E McHugh, Ulrich Steinseifer, Stefan Jockenhoevel, Wim E Hennink, Robbert Jan Kok
One of the major problems in end-stage bronchotracheal cancer is stenosis of the upper airways, either due to luminal ingrowth of the tumor or mucus plugging. Airway stents that suppress tumor ingrowth and sustain mucociliary transport can alleviate these problems in end-stage bronchial cancer. We evaluated different types of polymeric covers for a tissue engineered airway stent. The distinguishing feature of this stent concept is that respiratory epithelial cells can grow on the luminal surface of the stent which facilitates mucociliary clearance...
November 30, 2016: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/27863648/biodegradable-airway-stents-in-infants-potential-life-threatening-pitfalls
#8
B Sztanó, G Kiss, K Márai, G Rácz, I Szegesdi, K Rácz, G Katona, L Rovó
OBJECTIVE: The solution of severe tracheobronchial obstructions in early childhood means a great challenge. Biodegradable stents were intended to be a minimally invasive temporary solution which may decrease the number of interventions and limit the possible complications of stenting procedures. However, our first experiences have brought out a new, - especially in childhood - potentially life-threatening complication of this concept. METHODS: Five SX-ELLA biodegradable polydioxanone stents was applied in three patients because of severe tracheobronchial obstruction: congenital tracheomalacia (7 day-old), acquired tracheomalacia (10 month-old), and congenital trachea-bronchomalacia (10 month-old)...
December 2016: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/27824004/paclitaxel-drug-eluting-tracheal-stent-could-reduce-granulation-tissue-formation-in-a-canine-model
#9
Ting Wang, Jie Zhang, Juan Wang, Ying-Hua Pei, Xiao-Jian Qiu, Yu-Ling Wang
BACKGROUND: Currently available silicone and metallic stents for tracheal stenosis are associated with many problems. Granulation proliferation is one of the main complications. The present study aimed to evaluate the efficacy of paclitaxel drug-eluting tracheal stent in reducing granulation tissue formation in a canine model, as well as the pharmacokinetic features and safety profiles of the coated drug. METHODS: Eight beagles were randomly divided into a control group (bare-metal stent group, n = 4) and an experimental group (paclitaxel-eluting stent group, n = 4)...
2016: Chinese Medical Journal
https://www.readbyqxmd.com/read/27815921/bronchial-artery-aneurysm-suggested-to-be-caused-by-metalic-tracheal-stent-migration
#10
Kiyoshi Sato, Satoshi Fumimoto, Takehisa Fukada, Kaoru Ochi, Takayuki Kataoka, Yoshio Ichihashi, Hidetoshi Satomi, Takuya Morita, Nobuharu Hanaoka, Yoshikatsu Okada, Takahiro Katsumata
Occurrence of bronchial artery aneurysm is rare, and it has been detected in less than 1 % of all selective bronchial arteriography cases. Here, we present a case of a bronchial artery aneurysm caused by a tracheal stent migration. A 59-year-old man was operated on for esophageal cancer, where an esophageal-tracheal fistula occurred 1 week after operation. Surgical repair of the esophageal-tracheal fistula was performed using a muscle flap, but this not results in fistula closure. Consequently, a self-expanding covered metallic tracheal stent was implanted for rescue, and this resulted in fistula closure...
December 2016: Surgical Case Reports
https://www.readbyqxmd.com/read/27751243/repair-of-large-airway-defects-with-bioprosthetic-materials
#11
Brooks V Udelsman, Jessica Eaton, Ashok Muniappan, Christopher R Morse, Cameron D Wright, Douglas J Mathisen
OBJECTIVE: Patients with complicated airway defects that exceed the limits of primary repair represent a challenging clinical problem and require alternative techniques for repair. The aim of this study was to evaluate bioprosthetic reconstruction of large tracheal and bronchial defects. METHODS: Retrospective chart review of patients treated at a single tertiary center from 2008 to 2015 who underwent repair of tracheal or bronchial defects with a bioprosthetic device, namely aortic homograft or acellular dermal matrix...
November 2016: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/27670964/biodegradable-polydioxanone-stent-as-a-new-treatment-strategy-for-tracheal-stenosis-in-a-rabbit-model
#12
Insu Kawahara, Shigeru Ono, Kosaku Maeda
PURPOSE: Congenital tracheal stenosis (CTS) is a rare condition and difficult to treat. Slide tracheoplasty has unsatisfactory outcomes for severe neonatal symptomatic CTS. This study evaluated the use of biodegradable polydioxanone stents (BD stent) in a rabbit model of CTS. METHODS: Tracheal stenosis was induced in female Japanese white rabbits, 9-10weeks old, by direct scraping of the tracheal mucosa with a nylon brush following transverse incision of the trachea (control group, n=4)...
December 2016: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/27641295/a-modified-technique-of-laryngotracheal-reconstruction-without-the-need-for-prolonged-postoperative-stenting
#13
Konrad Hoetzenecker, Thomas Schweiger, Imme Roesner, Matthias Leonhard, Gabriel Marta, Doris M Denk-Linnert, Berit Schneider-Stickler, Wolfgang Bigenzahn, Walter Klepetko
OBJECTIVES: Repair of laryngotracheal stenosis with pronounced side-to-side narrowing and involvement of the glottis is challenging and usually requires laryngotracheal reconstruction with rib cartilage interpositions. This technique, as first described by Couraud, needs prolonged postoperative stabilization with Montgomery T-tubes, imposing significant morbidity and discomfort on patients. We describe our initial experience with a modified laryngotracheal reconstruction technique that avoids the need for prolonged postoperative stenting...
October 2016: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/27608892/age-and-gender-related-changes-in-bronchial-tree-a-morphometric-study-with-multidedector-ct
#14
M Ulusoy, I I Uysal, A S Kıvrak, S Ozbek, A K Karabulut, Y Paksoy, N U Dogan
OBJECTIVE: The aims of this study are the identification of differences in the diameter, length, area and branching angles of the trachea and bronchi with gender and age, and the identification of trachea types by using MDCT images. PATIENTS AND METHODS: The thoracic MDCT images of 253 patients (0-74 years old, 142 male and 111 female) were evaluated. Tracheal diameter, tracheal cross-sectional area, diameter and length of bronchi, and several angles of the bronchial tree [e...
August 2016: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/27607887/-tracheobronchoplasty-for-severe-diffuse-tracheomalacia
#15
H Hoffmann, D Gompelmann, C P Heußel, H Dienemann, R Eberhardt
Patients with diffuse airway instability due to tracheobronchomalacia or excessive dynamic airway collapse are typically highly symptomatic, with marked dyspnoea, recurrent bronchopulmonary infections and excruciating intractable cough. Silicone stents achieve immediate symptom control, but are - due to the typical complications associated with stent treatment - usually not an option for long-term treatment. The aim of surgical intervention is definitive stabilisation of the trachea and of both main bronchi by posterior splinting of the Paries membranaceus with a polypropylene mesh...
September 2016: Zentralblatt Für Chirurgie
https://www.readbyqxmd.com/read/27607477/structural-integrity-of-a-simple-method-to-repair-disrupted-tracheal-tube-pilot-balloon-assemblies
#16
Amir C Dayan, Richard H Epstein
BACKGROUND: An intact pilot balloon assembly is crucial to the proper function of a cuffed tracheal tube. Disruption of the pilot balloon, transection of the inflation line, or valve incompetence results in cuff deflation, which may lead to inadequate ventilation and aspiration of secretions. Such failures typically result in tracheal tube replacement, but this may be a safety risk if a difficult reintubation is anticipated. We recently encountered such a patient who remained intubated postoperatively and in whom the inflation line was transected, causing a large leak...
November 2016: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/27551905/vascular-ring-presenting-as-dysphagia-in-an-adult-woman-a-case-report
#17
B L Powell
A 48-year-old woman was seen in a surgical outpatient clinic with a 2 year history of progressive dysphagia with occasional regurgitation, partially controlled with a proton pump inhibitor. Primary investigations of pH testing and gastroscopy were normal, although a barium swallow study revealed significant hold-up at the aortic arch impression and a posterior right-sided oesophageal impression suggestive of a right-sided aortic arch. A follow-up computed tomography angiogram discovered a vascular ring encircling the trachea and oesophagus, formed by a right-sided aortic arch with aberrant aortic branches, and a Kommerell's diverticulum...
January 2017: Annals of the Royal College of Surgeons of England
https://www.readbyqxmd.com/read/27520928/engineered-tissue-stent-biocomposites-as-tracheal-replacements
#18
Liping Zhao, Sumati Sundaram, Andrew V Le, Angela H Huang, Jiasheng Zhang, Go Hatachi, Arkadi Beloiartsev, Michael G Caty, Tai Yi, Katherine Leiby, Ashley Gard, Mehmet H Kural, Liqiong Gui, Kevin A Rocco, Amogh Sivarapatna, Elizabeth Calle, Allison Greaney, Luca Urbani, Panagiotis Maghsoudlou, Alan Burns, Paolo DeCoppi, Laura E Niklason
Here we report the creation of a novel tracheal construct in the form of an engineered, acellular tissue-stent biocomposite trachea (TSBT). Allogeneic or xenogeneic smooth muscle cells are cultured on polyglycolic acid polymer-metal stent scaffold leading to the formation of a tissue comprising cells, their deposited collagenous matrix, and the stent material. Thorough decellularization then produces a final acellular tubular construct. Engineered TSBTs were tested as end-to-end tracheal replacements in 11 rats and 3 nonhuman primates...
September 2016: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/27516782/iatrogenic-injuries-to-the-trachea-and-main-bronchi
#19
Tomasz Gil, Janusz Warmus, Janusz Włodarczyk, Zbigniew Grochowski, Krzysztof Bederski, Piotr Kocoń, Piotr Talar, Jarosław Kużdżał
INTRODUCTION: Iatrogenic tracheobronchial injuries are rare. AIM: To analyse the mechanism of injury, symptoms and treatment of these patients. MATERIAL AND METHODS: Retrospective analysis of hospital records of all patients treated for main airway injuries between 1990 and 2012 was performed. RESULTS: There were 24 patients, including 21 women and 3 men. Mean time between injury and initiation of treatment was 12 hours (range: 2-48)...
June 2016: Kardiochirurgia i Torakochirurgia Polska, Polish Journal of Cardio-Thoracic Surgery
https://www.readbyqxmd.com/read/27511508/is-silicone-stent-insertion-a-clinically-useful-option-for-tracheobronchomalacia
#20
Levent Dalar, Seda Tural Önür, Cengiz Özdemir, Sinem Nedime Sökücü, Ahmet Levent Karasulu, Sedat Altin
BACKGROUND/AIM: Tracheobronchomalacia (TBM) leads to the obstruction of expiratory airflow and interference with secretion clearance. Stabilization of the airway wall using a silicon stent or laser coagulation of the posterior wall may be treatment options. This study aimed to retrospectively analyze which interventional bronchoscopic method could be used to provide airway stabilization and gain control of symptoms and for whom this method could be used. MATERIALS AND METHODS: Fifteen patients who had received treatment in our interventional pulmonology unit were analyzed...
February 17, 2016: Turkish Journal of Medical Sciences
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