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Endoluminal Stent

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https://www.readbyqxmd.com/read/28931265/diagnostic-and-interventional-optical-angioscopy-in-ex-vivo-carotid-arteries
#1
Luis E Savastano, Neeraj Chaudhary, Carlos Murga-Zamalloa, Michael Wang, Thomas Wang, B Gregory Thompson
BACKGROUND: Angioscopy - or endovascular endoscopy - is a catheter-based technique employing a flexible fiberoptic angioscope to directly visualize arterial lumen. Poor resolution and excessive stiffness of pre-existent angioscopes limited their use clinically. Recent advances resulted in novel fused optical fiber bundle angioscopes with improved flexibility and imaging resolution. Use of these devices in endovascular neurosurgery is still largely unexplored. OBJECTIVE: To evaluate image quality and feasibility of optical angioscopes for diagnostic and interventional neuro-angioscopy in carotid arteries of human cadavers...
February 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28931184/-modern-interdisciplinary-management-of-a-uretero-iliac-artery-fistula-case-report
#2
D Benedix, F Meyer, F Fischbach, A Janitzky, Z Halloul
Introduction Abnormal links between the arterial system and other luminal systems are a challenge to those in charge of their adequate diagnostic and therapeutic management. Objective Scientific case report on an individual who underwent successful treatment combining vascular-surgical and interventional radiology techniques for a rare right uretero-iliac artery fistula based on personal clinical experience, a selective literature research and a detailed discussion of current recommendations for diagnostic workup and subsequent treatment...
September 20, 2017: Aktuelle Urologie
https://www.readbyqxmd.com/read/28881905/perforated-esophageal-intervention-focus-perf-study-a-multi-center-examination-of-contemporary-treatment
#3
J T Ali, R D Rice, E A David, J D Spicer, J J Dubose, L Bonavina, S Siboni, T A O'Callaghan, X Luo-Owen, S Harrison, C G Ball, J Bini, G A Vercruysse, D Skarupa, C C Miller Iii, A L Estrera, K G Khalil
The treatment of esophageal perforation (EP) remains a significant clinical challenge. While a number of investigators have previously documented efficient approaches, these were mostly single-center experiences reported prior to the introduction of newer technologies: specifically endoluminal stents. This study was designed to document contemporary practice in the diagnosis and management of EP at multiple institutions around the world and includes early clinical outcomes. A five-year (2009-2013) multicenter retrospective review of management and outcomes for patients with thoracic or abdominal esophageal perforation was conducted...
November 1, 2017: Diseases of the Esophagus: Official Journal of the International Society for Diseases of the Esophagus
https://www.readbyqxmd.com/read/28767501/endoscopic-gastroenterostomy-techniques-and-review
#4
Shayan Irani, Todd H Baron, Takao Itoi, Mouen A Khashab
PURPOSE OF REVIEW: Gastric outlet obstruction (GOO) can result from benign and malignant causes. Until recently, surgical gastrojejunostomy was the treatment of choice for patient with benign and malignant GOO with a good functional status. Endoscopic placement of luminal self-expandable metal stents is currently widely accepted as the first line of treatment for malignant GOO because of its effectiveness and minimally invasive nature. The main shortcoming of luminal stents is the high incidence of recurrent GOO most commonly because of tumor ingrowth/overgrowth...
September 2017: Current Opinion in Gastroenterology
https://www.readbyqxmd.com/read/28681224/percutaneous-image-guided-pancreatic-duct-drainage-technique-results-and-expected-benefits
#5
M Mizandari, T Azrumelashvili, J Kumar, N Habib
PURPOSE: The aim of this study is to provide a technical detail and feasibility of percutaneous image-guided pancreatic duct (PD) drainage and to discuss its subtleties in a series of patients with obstructed PD. MATERIALS AND METHODS: Thirty patients presenting with PD obstruction from pancreatic head tumour or pancreatitis were subjected to percutaneous image-guided PD drainage under a guidance of ultrasound or computed tomography. Following the successful puncture of PD, a locking loop drainage catheter was placed using conventional guidewire techniques under real-time fluoroscopy guidance...
July 5, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/28667507/endoluminal-nd-yag-laser-application-in-ex-vivo-biliary-porcine-tissue
#6
Roberta Rea, Francesco Maria Di Matteo, Margareth Martino, Monica Pandolfi, Paola Saccomandi, Carla Rabitti, Anna Crescenzi, Guido Costamagna
Adequate biliary drainage with endoscopic or percutaneous placement of self-expandable metal stents represents the goal of palliation in patients with inoperable malignant obstruction of the biliary tree. As an adjunct to stenting, various tissue ablation treatments have been proposed with conflicting results. The aim of this study was to test the effect on biliary tissue of a new ablation technique based on Nd:YAG laser light delivery. The study was conducted on ex vivo specimens of 18 healthy farm pigs, using cystic ducts that are the simplest biliary structures to isolate and cannulate ex vivo...
August 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28647659/flow-diverters-as-useful-adjunct-to-traditional-endovascular-techniques-in-treatment-of-direct-carotid-cavernous-fistulas
#7
Christopher S Ogilvy, Rouzbeh Motiei-Langroudi, Mohammad Ghorbani, Christoph J Griessenauer, Abdulrahman Y Alturki, Ajith J Thomas
BACKGROUND: Direct carotid-cavernous sinus fistulas (CCFs) are high-flow arteriovenous shunts that are typically the result of a severe head injury. The endovascular treatment of these lesions includes the use of detachable balloons, coils, liquid embolic agents, and covered stents. To minimize the chance of treatment failure and subsequent complications, endoluminal reconstruction using a flow-diverting stent may be added to the treatment construct. METHODS: We present 3 cases and review the existing literature...
September 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28595481/retrograde-popliteal-access-to-percutaneous-peripheral-intervention-for-chronic-total-occlusion-of-superficial-femoral-arteries
#8
Mert Dumantepe
OBJECTIVE: The aim of this study is to present our initial experience with the use of the retrograde popliteal artery access in patients with chronic total occlusions of superficial femoral artery (SFA). METHOD: From July 2012 to May 2014, a total of 28 patients (20 men, mean age 61.2 ± 11.5 years) with total occlusion of the SFA and good distal runoff were treated with percutaneous atherectomy, balloon angioplasty, and stenting (mean length 165.3 ± 57.5 mm, range 72-336 mm)...
July 2017: Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28547126/endovascular-management-of-native-postcoarctation-thoracic-aortic-aneurysms
#9
Ziheng Wu, Xiangtao Zheng, Xin Fang, Yangyan He, Donglin Li, Chengfei Zheng, Hongkun Zhang
PURPOSE: Postcoarctation thoracic aortic aneurysm formation is one of the most serious complications for coarctation of aorta. Open surgery to repair these aneurysms is associated with high morbidity and mortality. Endovascular therapy is an attractive alternative to open surgery. We have studied the efficacy and safety of endovascular therapy for postcoarctation thoracic aortic aneurysms, and will share our findings and experience through this document. METHODS: The data was retrospectively collected on consecutive patients who were presented with postcoarctation thoracic aortic aneurysms at our medical center...
May 25, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/28501245/emergency-presentations-of-colorectal-cancer
#10
REVIEW
Canaan Baer, Raman Menon, Sarah Bastawrous, Amir Bastawrous
Many colorectal carcinomas will present emergently with issues such as obstruction, perforation, and bleeding. Emergency surgery is associated with poor short- and long-term outcomes. For abnormality localizing to the colon proximal to the splenic flexure, surgical management with hemicolectomy is often a safe and appropriate approach. Obstructions are more common in the distal colon, however, where there is an evolving spectrum of surgical and nonsurgical options, most notably by the development of endoluminal stents...
June 2017: Surgical Clinics of North America
https://www.readbyqxmd.com/read/28316865/treatment-of-intracranial-aneurysms-with-flow-re-direction-endoluminal-device-a-single-centre-experience-with-short-term-follow-up-results
#11
Neeraj Ramesh Mahboobani, Wing Ho Chong, Samuel Siu Kei Lam, Jimmy Chi Wai Siu, Chong Boon Tan, Yiu Chung Wong
PURPOSE: A flow diverter (FD) is an effective treatment option for intracranial aneurysms. The Flow Re-direction Endoluminal Device (FRED) is a relatively new flow diverter with a unique dual-layer design. We report our experience and short-term results with the FRED. MATERIALS AND METHODS: We did a retrospective review of all consecutive cases in which the FRED was used to treat intracranial aneurysms at a single institution from March 2014 till December 2015. Clinical parameters, aneurysm characteristics, technical results and short-term outcomes were reviewed...
March 2017: Neurointervention
https://www.readbyqxmd.com/read/28291400/effect-of-variations-in-stent-placement-on-outcome-of-endoluminal-stenting-for-canine-tracheal-collapse
#12
Stephanie Rosenheck, Garrett Davis, Carl D Sammarco, Richard Bastian
The study's objective was to determine effects of relative size and placement location of endoluminal stents on incidence of complications and survival for canine tracheal collapse. Measurements were obtained on lateral radiographs before and after stenting to determine percent of the trachea occupied by the stent. These values were monitored over time and compared to complication rates and survival. Overall median survival time was 502 days. Six month survival rate was 78%, 1 yr survival was 60%, and 2 yr survival was 26%...
May 2017: Journal of the American Animal Hospital Association
https://www.readbyqxmd.com/read/28237561/evolution-of-endoscopic-treatment-of-sleeve-gastrectomy-leaks-from-partially-covered-to-long-fully-covered-stents
#13
Fabio Garofalo, Maxime Noreau-Nguyen, Ronald Denis, Henri Atlas, Pierre Garneau, Radu Pescarus
BACKGROUND: Laparoscopic sleeve gastrectomy (SG) has become a widely accepted option in the treatment of morbid obesity. Gastric leaks after SG occur in .9%-2.2% of the patients, mostly at the gastroesophageal junction. The current treatment algorithm includes drainage, antibiotics, nutritional support, and endoluminal control. OBJECTIVES: Our hypothesis is that long, fully covered stents represent a safe, effective solution for SG leaks. SETTING: University hospital...
June 2017: Surgery for Obesity and related Diseases: Official Journal of the American Society for Bariatric Surgery
https://www.readbyqxmd.com/read/28068871/predilation-technique-with-balloon-angioplasty-to-facilitate-percutaneous-groin-access-of-large-size-sheath-through-scar-tissue
#14
Felice Pecoraro, Mayur Krishnaswamy, Johnny Steuer, Gilbert Puippe, Nicola Mangialardi, Thomas Pfammatter, Zoran Rancic, Frank J Veith, Neal S Cayne, Mario Lachat
Purpose Percutaneous remote access for endovascular aortic repair is an advantageous alternative to open access. Previous surgery in the femoral region and the presence of synthetic vascular grafts in the femoral/iliac arteries represent major limitations to percutaneous remote access. The aim of this study was to evaluate an original technique used for enabling percutaneous remote access for thoracic or abdominal endovascular aortic repair in patients with scar tissue and/or a vascular graft in the groin. Methods Twenty-five consecutive patients with a thoracic (11/25; 44%) or an aortic aneurysm (14/25; 66%) and with a synthetic vascular graft in the groin (16/25; 64%) or a redo groin access (9/25; 36%) were managed through the percutaneous remote access...
August 2017: Vascular
https://www.readbyqxmd.com/read/28032656/endoscopic-ultrasonography-guided-drainage-of-pancreatic-fluid-collections
#15
REVIEW
Tiing Leong Ang, Anthony Y B Teoh
Endoscopic ultrasound (EUS)-guided drainage is now firmly established as the best option for drainage of walled-off pancreatic fluid collections (PFC). It has high clinical efficacy, similar to surgical and percutaneous approaches, but with lower morbidity and costs. It is superior to non-EUS-guided approaches because even collections without endoluminal bulging can be successfully drained. Transmural drainage alone is sufficient for pseudocysts, but in the context of walled-off pancreatic necrosis (WON), adjunctive direct endoscopic necrosectomy (DEN) may be required...
May 2017: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/28018512/prevention-of-embolization-in-concomitant-endovascular-therapy-for-thoracic-and-abdominal-aneurysms-with-severely-atheromatous-aorta
#16
Tomohiro Takano, Shinya Takase, Akihito Kagoshima, Hitoshi Yokoyama
A 74-year-old man with multiple aortic aneurysms and shaggy aorta was simultaneously treated by conventional open repair for an abdominal aortic aneurysm and endoluminal stent grafting for a thoracic aortic aneurysm. We performed intermittent clamping of the visceral and carotid arteries under an extracorporeal circulation circuit without a blood flow pump, which lead to the avoidance of embolization in spite of the disadvantage of endoluminal stent grafting for atheromatous aorta.
2016: Annals of Vascular Diseases
https://www.readbyqxmd.com/read/27918636/4d-printing-of-shape-memory-based-personalized-endoluminal-medical-devices
#17
Matt Zarek, Nicola Mansour, Shir Shapira, Daniel Cohn
The convergence of additive manufacturing and shape-morphing materials is promising for the advancement of personalized medical devices. The capability to transform 3D objects from one shape to another, right off the print bed, is known as 4D printing. Shape memory thermosets can be tailored to have a range of thermomechanical properties favorable to medical devices, but processing them is a challenge because they are insoluble and do not flow at any temperature. This study presents here a strategy to capitalize on a series of medical imaging modalities to construct a printable shape memory endoluminal device, exemplified by a tracheal stent...
January 2017: Macromolecular Rapid Communications
https://www.readbyqxmd.com/read/27908823/subintimal-recanalization-of-an-occluded-common-iliac-stent-a-case-report
#18
Giuseppe Asciutto, Roberta M Brambilla, Ioannis Bountouris, Martin Malina, Nuno V Dias
The purpose of this report is to describe a minimally invasive alternative endovascular technique for the treatment of chronically occluded stents when it is not possible to cross them endoluminally. A 71-year-old patient with recurrent severe lower limb claudication due to occlusion of a stent placed in the common iliac artery 5 years earlier underwent subintimal recanalization of the stented segment and restenting after failed intraluminal approach. The postoperative computed tomography scan showed that the restented segment was patent with a flattening of the previous stent...
February 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/27865144/successful-endovascular-management-of-endoleak-like-phenomenon-following-open-abdominal-aortic-aneurysm-repair
#19
Haider Khan Bangash, Mitra Rahmatzeh, Bibombe P Mwipatayi
INTRODUCTION: Endoleaks are a well-known complication after endovascular aortic repair. Type I endoleak-like phenomenon (also defined as a proximal pseudoaneurysm) post-open abdominal aortic aneurysm (AAA) repair is described as an anastomotic leak causing recurrent pressurization of the original aneurysm sac. It is rare but may result in aneurysmal sac rupture into the peritoneal cavity. REPORT: A 78-year-old man presented with a progressively enlarged aneurysmal sac due to proximal anastomotic degeneration of the proximal suture line associated with an outflow through a patent large lumbar vessel following a previous emergency open AAA repair...
2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/27819805/type-iiib-endoleak-associated-with-an-infected-thoracoabdominal-endograft
#20
Nathan T Orr, Michael A Winkler, Eleftherios S Xenos
We present a 63-year-old male patient who presented with vague abdominal pain after an endoluminal thoracoabdominal aneurysm repair. He was found to have an infected endograft and an associated type IIIb endoleak. We believe that the infection contributed to the fabric degradation along the endograft and resulted in an expanding endoleak. Graft explantation was not performed because of the patient's multiple comorbidities, and the endoleak was treated with an additional stent graft and suppressive antibiotics...
September 2016: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
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