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https://www.readbyqxmd.com/read/28231555/edge-preserving-denoising-for-intra-operative-cone-beam-ct-in-endovascular-aneurysm-repair
#1
Yi Liu, Miguel Castro, Mathieu Lederlin, Huazhong Shu, Adrien Kaladji, Pascal Haigron
C-arm cone-beam computed tomography (CBCT) acquisition during endovascular aneurysm repair (EVAR) is an emergent technology with more and more applications. It offers real time imaging with a stationary patient and provides 3-D information to achieve guidance of intervention. However, there is growing concern on the overall radiation doses delivered to patients all along the endovascular management due to pre-, intra-, and post-operative X-ray imaging. Manufactures may have their low dose protocols to realize reduction of radiation dose, but CBCT with a low dose protocol has too many artifacts, particularly streak artifacts, and decreased contrast-to-noise ratio (CNR)...
January 30, 2017: Computerized Medical Imaging and Graphics: the Official Journal of the Computerized Medical Imaging Society
https://www.readbyqxmd.com/read/28216973/endoscopic-ultrasound-guided-gallbladder-drainage-for-acute-cholecystitis-long-term-outcomes-after-removal-of-a-self-expandable-metal-stent
#2
Ken Kamata, Mamoru Takenaka, Masayuki Kitano, Shunsuke Omoto, Takeshi Miyata, Kosuke Minaga, Kentaro Yamao, Hajime Imai, Toshiharu Sakurai, Tomohiro Watanabe, Naoshi Nishida, Masatoshi Kudo
AIM: To assess the long-term outcomes of this procedure after removal of self-expandable metal stent (SEMS). The efficacy and safety of endoscopic ultrasound-guided gallbladder drainage (EUS-GBD) with SEMS were also assessed. METHODS: Between January 2010 and April 2015, 12 patients with acute calculous cholecystitis, who were deemed unsuitable for cholecystectomy, underwent EUS-GBD with a SEMS. EUS-GBD was performed under the guidance of EUS and fluoroscopy, by puncturing the gallbladder with a needle, inserting a guidewire, dilating the puncture hole, and placing a SEMS...
January 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28215930/ultrasound-guided-resuscitative-endovascular-balloon-occlusion-of-the-aorta-in-the-resuscitation-area
#3
Takayuki Ogura, Alan Kawarai Lefor, Mitsunobu Nakamura, Kenji Fujizuka, Kousuke Shiroto, Minoru Nakano
BACKGROUND: In trauma resuscitation with resuscitative endovascular balloon occlusion of the aorta (REBOA), urgent and accurate placement of the catheter in the resuscitation area without fluoroscopy can shorten the time from admission to REBOA, allowing rapid, temporary control of bleeding. DISCUSSION: The experience-based protocol in our center for ultrasound-guided REBOA in the resuscitation area without fluoroscopy is as follows: the femoral artery is punctured and a guidewire inserted; sonography is used to verify that the guidewire is in the abdominal aorta; the position of the balloon is confirmed with ultrasound after estimating the distance to the clavicle, and the pressure in the radial artery and sheath is used to monitor correct positioning; connect the pressure transducer to the catheter sheath for continuous monitoring of the blood pressure in the sheath, and inflate the balloon until the blood pressure tracing at the sheath has disappeared; check the pulse in the left radial artery, and withdraw the catheter slightly if the pulse in the radial artery is not palpable or is decreased (if this pulse is not palpable or decreased, the balloon is in the aortic arch)...
February 17, 2017: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28215097/what-is-the-most-cost-effective-method-for-a-difficult-biliary-cannulation-in-ercp
#4
Jesús García-Cano
Editorial dealing with difficult biliary cannulation in ERCP. Pancreatic techniques that take advantage of a guidewire inserted in the Main Pancreatic Duct are preferred to needle-knife precut.
February 20, 2017: Revista Española de Enfermedades Digestivas
https://www.readbyqxmd.com/read/28208009/impact-of-a-newly-developed-short-double-balloon-enteroscope-on-stent-placement-in-patients-with-surgically-altered-anatomies
#5
Koichiro Tsutsumi, Hironari Kato, Hiroyuki Okada
A newly developed short double-balloon enteroscope with a working channel enlarged to a diameter of 3.2 mm is a novel innovation in stent placement for patients with surgically altered anatomies. Herein, we report three patients in whom this new scope contributed to an efficient technique and ideal treatment. In the first case, the double guidewire technique was efficient and effective for multiple stent placements. In the second case, covered self-expandable metal stent (SEMS) placement, which is the standard treatment for malignant biliary obstruction, could be performed in a technologically sound and safe manner...
February 17, 2017: Gut and Liver
https://www.readbyqxmd.com/read/28206725/the-tibiopedal-retrograde-vascular-access-for-challenging-popliteal-and-below-the-knee-chronic-total-occlusions-literature-review-and-description-of-the-technique
#6
Andrej Schmidt, Olaf J Bakker, Yvonne Bausback, Dierk Scheinert
In recent years, the retrograde tibiopedal approach is increasingly being used for revascularization of complex chronic total occlusions of infrainguinal arteries to bailout those cases where a guidewire was not possible to pass through the lesion from antegrade and therefore the treatment would have failed. The present popularity of this technique is in contrast to the paucity of data published so far. Nevertheless, from the reports that are available and from the authors' experience we conclude that it is not only a successful but also a safe technique...
February 15, 2017: Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/28197870/intravascular-ultrasound-guidance-of-percutaneous-coronary-intervention-in-ostial-chronic-total-occlusions-a-description-of-the-technique-and-procedural-results
#7
Nicola Ryan, Nieves Gonzalo, Philip Dingli, Oscar Vedia Cruz, Pilar Jiménez-Quevedo, Luis Nombela-Franco, Ivan Nuñez-Gil, María Del Trigo, Pablo Salinas, Carlos Macaya, Antonio Fernandez-Ortiz, Javier Escaned
Inability to cross the lesion with a guidewire is the most common reason for failure in percutaneous revascularization (PCI) of chronic total occlusions (CTOs). An ostial or stumpless CTO is an acknowledged challenge for CTO recanalization due to difficulty in successful wiring. IVUS imaging provides the opportunity to visualize the occluded vessel and to aid guidewire advancement. We review the value of this technique in a single-centre experience of CTO PCI. This series involves 22 patients who underwent CTO-PCI using IVUS guidance for stumpless CTO wiring at our institution...
February 14, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28190783/a-retrospective-analysis-of-catheter-based-sources-in-intravascular-brachytherapy
#8
J DeCunha, C Janicki, S A Enger
PURPOSE: Coronary artery disease involves the deposition of plaque along the walls of a coronary artery leading to narrowed or blocked vessels (stenosis) and is one of the main causes of death in developed countries. Percutaneous transluminal coronary angioplasty (PTCA) is used to reverse stenosis. Restenosis (renarrowing) of the treated vessel is a major complication of PTCA. A metal mesh tube (stent) can be placed inside the vessel to prevent restenosis. Tissue stress incurred during PTCA and stenting can provoke neointimal cell proliferation leading to in-stent restenosis (ISR)...
February 10, 2017: Brachytherapy
https://www.readbyqxmd.com/read/28190694/successful-tevar-with-a-through-and-through-guidewire-in-an-extremely-tortuous-aorta
#9
B Fiorucci, N Tsilimparis
No abstract text is available yet for this article.
February 10, 2017: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28181898/-placement-of-nasoenteral-feeding-tubes-by-nurses
#10
T H Mungroop, A Gerritsen, A Duflou, O R Busch, E M Mathus-Vliegen, M G Besselink
Electromagnetic-guided placement of nasoenteral feeding tubes by nurses is an alternative to endoscopic placement by gastroenterologists. During placement, the electromagnetic signal that is emitted by the tip of the guidewire enables visualisation of the position of the tube on a portable monitor. The procedure can be performed by a trained endoscopy nurse at the bedside of the patient. This could have logistic advantages, as the patient transport is not necessary and confirmation of the position of the tube by an abdominal X-ray is not required...
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/28180150/endoscopic-treatment-of-leak-at-the-tip-of-the-j-ileal-pouch
#11
Gursimran Singh Kochhar, Bo Shen
Background and study aims The tip of the "J" of the ileal pouch is the vulnerable location for leak after restorative proctocolectomy, which has normally been treated with surgery. We aimed to describe a novel endoscopic method to treat the same. Patients and methods A cohort of 12 consecutive patients with a leak at the tip of the "J" was identified in our prospectively maintained Pouch Registry. The endoscopic over-the-scope clipping (OTSC) system was used for the closure of the leak. Results Eight patients (66...
January 2017: Endoscopy International Open
https://www.readbyqxmd.com/read/28163431/removal-of-a-retained-intracardiac-radiolucent-guidewire-fragment-using-an-atrieve%C3%A2-vascular-snare-using-combined-fluoroscopy-and-transesophageal-echocardiography-guidance-in-an-infant
#12
Asif Padiyath, Eudice E Fontenot, Boban P Abraham
Retained intravascular foreign body is a well-known complication of central venous access placement in children as well as adults. Most of these foreign bodies are radio-opaque and hence are removed under fluoroscopy guidance. In our case, we describe the removal of an intracardiac radiolucent foreign body in an infant utilizing a combination technique - transesophageal echocardiogram and fluoroscopy.
January 2017: Annals of Pediatric Cardiology
https://www.readbyqxmd.com/read/28157261/mediguide-assisted-transseptal-puncture-without-echocardiographic-guidance
#13
Gabriel Ballesteros, Pablo Ramos Ardanaz, Renzo Neglia, Marcel Palacio Solís, Cristina Díaz Fernández, Graciela López González, Elene Janiashvili, Ignacio García-Bolao
BACKGROUND: First description of a technique for left atrium transseptal puncture (TSP) with minimal radiation exposure by using the nonfluoroscopic MediGuide™ tracking system (MG) without the assistance of intracardiac echocardiography. METHODS: This study included 31 consecutive patients with atrial fibrillation undergoing an MG assisted percutaneous catheter ablation procedure. A Brockenbrough transseptal needle (BRK) is connected to a standard pressure transducer through a two input valve...
February 3, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28154267/contrast-induced-hyperemia-as-an-alternative-to-drug-induced-hyperemia-in-the-evaluation-of-the-fractional-flow-reserve-in-coronary-lesions
#14
Nobuo Shiode, Tomokazu Okimoto, Hiromichi Tamekiyo, Tomoharu Kawase, Kenichi Yamane, Yuzo Kagawa, Yuto Fujii, Yusuke Ueda, Naoya Hironobe, Yasuko Kato, Yasuhiko Hayashi
Objective Measuring the fractional flow reserve (FFR) requires the induction of coronary hyperemia, usually with adenosine, adenosine triphosphate (ATP), or papaverine. However, adenosine can induce rhythmic complications, and intracoronary boluses of papaverine that prolong the QT interval can cause ventricular tachycardia. Injection of contrast media, which is routinely performed to validate the FFR guidewire placement, also induces hyperemia and may be an alternative method of measuring the FFR. We evaluated the diagnostic accuracy of the FFR after contrast hyperemia (FFRcont) compared to FFR evaluated after intracoronary papaverine (FFRpp)...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28153191/peritoneal-dialysis-catheter-insertion
#15
REVIEW
John H Crabtree, Kai-Ming Chow
The success of peritoneal dialysis as renal-replacement therapy depends on a well-functioning peritoneal catheter. Knowledge of best practices in catheter insertion can minimize the risk of catheter complications that lead to peritoneal dialysis failure. The catheter placement procedure begins with preoperative assessment of the patient to determine the most appropriate catheter type, insertion site, and exit site location. Preoperative preparation of the patient is an instrumental step in facilitating the performance of the procedure, avoiding untoward events, and promoting the desired outcome...
January 2017: Seminars in Nephrology
https://www.readbyqxmd.com/read/28149743/a-surgical-technique-for-posterolateral-placement-of%C3%A2-interference-screw-accurately-in-tibial-tunnel-in%C3%A2-single-bundle-anterior-cruciate-ligament%C3%A2-reconstruction
#16
Prashant Parate, Bancha Chernchujit
Anatomic orientation of the graft in anatomic anterior cruciate ligament reconstruction is the key to improved knee stability, restoration of normal knee kinematics, and the prevention of long-term joint degeneration. The graft position and orientation in the joint depend on the position of the tibial and femoral tunnels. Graft displacement in the tibial tunnel due to the position of the interference screw when the screw has proximal fixation also has an effect on the orientation of the graft. We have developed a technique for adjusting guidewire placement for the interference screw posterolaterally in the tibial tunnel in anatomic single-bundle anterior cruciate ligament reconstruction...
December 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28145877/transcatheter-mitral-paravalvular-leak-closure-facilitated-by-preprocedural-cardiac-ct-for-simulation-of-fluoroscopic-anatomy-and-paravalvular-defect-localization
#17
Kasper Korsholm, Ulrik Mortensen, Jesper Møller Jensen, Nicolo Piazza, Pascal Thériault-Lauzier, Jens Erik Nielsen-Kudsk
Paravalvular leakage (PVL) occurs in 6%-15% of cases after surgical heart valve replacement. A percutaneous approach is increasingly used to close PVLs as an alternative to repeat surgery. Computed tomography (CT) can be used for simulation of fluoroscopic cardiac anatomy. This technique allows preprocedural definition of optimal C-arm angulations and PVL localization in reference to fluoroscopic views. It is very helpful for guidewire crossing of the PVL and positioning of the closure device. We report a case with the first use of dedicated software for fluoroscopic simulation (FluoroCT) in transcatheter mitral PVL closure...
February 2017: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/28145875/novel-crossing-system-for-chronic-total-occlusion-recanalization-first-in-man-experience-with-the-soundbite-crossing-system
#18
Andrew Benko, Simon Bérubé, Christopher E Buller, Steven Dion, Louis-Philippe Riel, Martin Brouillette, Philippe Généreux
Chronic total occlusion (CTO) lesions are frequent in patients with peripheral and coronary artery disease, and are associated with a higher risk of adverse events, including mortality, decreased quality of life, and increased health-care costs. Percutaneous intervention of CTO lesions has been associated with a lower procedural success rate, and current dedicated CTO devices may be of limited use for non-CTO experts, and associated with increased intraprocedural complication rates. The SoundBite Crossing System (SoundBite Medical Solutions, Inc) is a newly-developed device using shockwaves (short-duration, high-amplitude pressure pulses) delivered to the tip of guidewire to facilitate penetration of the proximal cap and crossing of the occlusion...
February 2017: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/28144127/a-novel-technique-for-duodenal-resection-and-primary-anastomosis-with-robotic-assistance-and-orvil
#19
Abdulkadir Bedirli, Bulent Salman, Mahir Nasirov, Ibrahim Dogan
BACKGROUND AND OBJECTIVES: Benign duodenal neoplasm is a rare occurrence. Minimally invasive tumor resection and anastomosis formation with an OrVil catheter is a novel approach to treating this disease. In this article, we present a new technique for duodenojejunal anastomosis. This technique was applied in 4 patients with benign distal duodenal tumors who were treated with minimally invasive surgery with robotic assistance. METHODS: In 4 patients, after the removal of distal duodenal masses with a robotic technique, an orifice in the duodenum was opened to allow for the passage of a guidewire...
January 2017: JSLS: Journal of the Society of Laparoendoscopic Surgeons
https://www.readbyqxmd.com/read/28138123/initial-experience-and-feasibility-of-the-new-low-profile-stingray-catheter-as-part-of-the-antegrade-dissection-and-re-entry-revascularization-strategy-for-coronary-chronic-total-occlusions
#20
Joren Maeremans, Pieter-Jan Palmers, Joseph Dens
BACKGROUND During antegrade dissection re-entry (ADR) of chronic total occlusions (CTO), the first-generation Stingray catheter requires the use of large-bore guides (sheathless 7.5 Fr or 8 Fr), which increases the risk for access site-related complications and compromises radial approaches. Smaller guiding sizes necessitate long guidewires (e.g., 300 cm) or guidewire extensions for catheter advancement or removal. However, friction between guides and the Stingray catheter can result in unstable guidewire position or unintentional removal...
January 31, 2017: American Journal of Case Reports
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