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Expandable sheath or e-sheath

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https://www.readbyqxmd.com/read/28070593/-morphological-investigations-of-deep-sole-ulcers-in-cattle-part-1-the-complicated-rusterholz-ulcer
#1
Susanne Gehringer, Matthias Müller, Johann Maierl
OBJECTIVE: In the context of a larger study on morphological changes of deep sole ulcers, claws with Rusterholz ulcer (RU) were investigated to describe the varied pathological changes of the RU. MATERIAL AND METHODS: Hind limbs of 55 cows displaying external signs of complicated sole ulcers were examined externally and internally. To examine the samples internally, a sagittal section was performed. Furthermore, the material was examined histologically and after bone maceration...
January 10, 2017: Tierärztliche Praxis. Ausgabe G, Grosstiere/Nutztiere
https://www.readbyqxmd.com/read/27957603/structure-and-functioning-of-oil-cavities-in-the-shoot-apex-of-metrodorea-nigra-a-st-hil-rutaceae
#2
Silvia Rodrigues Machado, Yve Canaveze, Tatiane Maria Rodrigues
This study investigates the histology and subcellular features of secretory cavities during the development of the shoot apex of Metrodorea nigra A. St.-Hil. in order to better understand the functioning of these glands. This Rutaceae species is a very suitable model for studying secretory cavity life span, since the shoot apex exhibits both dormant and growth stages during its annual cycle. Shoot apices were collected during the dormant and growth stages from populations of M. nigra growing under natural conditions...
December 12, 2016: Protoplasma
https://www.readbyqxmd.com/read/27939382/incidence-predictors-and-mid-term-outcomes-of-percutaneous-closure-failure-after-transfemoral-aortic-valve-implantation-using-an-expandable-sheath-from-the-optimized-transcatheter-valvular-intervention-ocean-tavi-registry
#3
Yugo Nara, Yusuke Watanabe, Ken Kozuma, Akihisa Kataoka, Makoto Nakashima, Hirofumi Hioki, Hideyuki Kawashima, Fukuko Nagura, Shinichi Shirai, Norio Tada, Motoharu Araki, Toru Naganuma, Futoshi Yamanaka, Masanori Yamamoto, Kentaro Hayashida
The aim of this study was to evaluate the incidence, predictors, and outcomes of percutaneous closure device (PCD) failure during transfemoral transcatheter aortic valve implantation (TAVI) with an Edwards Sapien-XT prosthesis using an expandable sheath (eSheath). From October 2013 to April 2016, 1,215 patients who underwent TAVI were prospectively enrolled in the Optimized Transcatheter Valvular Intervention (OCEAN-TAVI) registry. Of these, 478 patients underwent transfemoral TAVI with Sapien-XT prosthesis using an eSheath and percutaneous closure with a Perclose ProGlide system...
November 16, 2016: American Journal of Cardiology
https://www.readbyqxmd.com/read/27916741/design-and-principle-of-operation-of-the-heartmate-phptm-percutaneous-heart-pump
#4
N M Van Mieghem, Joost Daemen, Corstiaan den Uil, Onur Dur, Linda Joziasse, AnneMarie Maugenest, Keif Fitzgerald, Chris Parker, Paul Muller, Robert-Jan van Geuns
The HeartMate PHP (Percutaneous Heart Pump) is a second-generation transcatheter axial flow circulatory support system. The collapsible catheter pump is inserted through a 14F sheath, deployed across the aortic valve expanding to 24F and able to deliver up to 5L/min blood flow at minimum hemolytic risk. As such this device may be a valuable adjunct to percutaneous coronary intervention (PCI) of challenging lesions in high-risk patients or treatment of cardiogenic shock. This technical report discusses: (i) the HeartMate PHP concept, (ii) the implantation technique, (iii) the hemodynamic performance in an in vitro cardiovascular flow testing setup and (iv) preliminary clinical experience...
December 6, 2016: EuroIntervention
https://www.readbyqxmd.com/read/27882604/the-dog-bone-technique-a-novel-easy-and-safe-catheter-maneuver-for-aortic-arch-and-coarctation-stenting
#5
Marinos Kantzis, Anja Lehner, Kai Thorsten Laser, Anca Racolta, Radka Vcasna, Marcus Fischer, Deniz Kececioglu, Nikolaus A Haas
BACKGROUND: Various techniques are described to facilitate stable stent implantation in aortic arch stenosis or coarctation. We describe an alternative technique, which due to its unique appearance during stent implantation, we have named "Dog Bone Technique" (DBT). TECHNIQUE: The stent/balloon assembly is placed across the stenosis, the long sheath is retrieved to uncover the distal 20-50% of the stent. The balloon is inflated with the pressure inflator just to expand slightly the stent...
November 24, 2016: Journal of Interventional Cardiology
https://www.readbyqxmd.com/read/27865711/use-of-an-eptfe-covered-nitinol-self-expanding-stent-graft-for-the-treatment-off-pre-closure-device-failure-during-transcatheter-aortic-valve-replacement
#6
Arie Steinvil, Nelson Bernardo, Toby Rogers, Edward Koifman, Kyle Buchanan, M Chadi Alraies, Christian Shults, Rebecca Torguson, Petros G Okubagzi, Augusto D Pichard, Lowell F Satler, Itsik Ben-Dor, Ron Waksman
OBJECTIVES: Our aim was to describe our experience with the use of an ePTFE-covered nitinol self-expanding stent graft (GORE® VIABAHN® Endoprosthesis, Gore Medical, USA) placed in the common femoral artery for the treatment of suture-mediated pre-closure device failure following transcatheter aortic valve replacement (TAVR). BACKGROUND: Access site-related vascular complications (VC) following sheath removal related to pre-closure device failure during TAVR are common and treatment options may vary...
October 21, 2016: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/27846318/a-long-gap-peripheral-nerve-injury-therapy-using-human-skeletal-muscle-derived-stem-cells-sk-scs-an-achievement-of-significant-morphological-numerical-and-functional-recovery
#7
Tetsuro Tamaki, Maki Hirata, Nobuyuki Nakajima, Kosuke Saito, Hiroyuki Hashimoto, Shuichi Soeda, Yoshiyasu Uchiyama, Masahiko Watanabe
Losses in vital functions of the somatic motor and sensory nervous system are induced by severe long-gap peripheral nerve transection injury. In such cases, autologous nerve grafts are the gold standard treatment, despite the unavoidable sacrifice of other healthy functions, whereas the prognosis is not always favorable. Here, we use human skeletal muscle-derived stem cells (Sk-SCs) to reconstitute the function after long nerve-gap injury. Muscles samples were obtained from the amputated legs from 9 patients following unforeseen accidents...
2016: PloS One
https://www.readbyqxmd.com/read/27792743/the-evolutionary-basis-of-naturally-diverse-rice-leaves-anatomy
#8
Jolly Chatterjee, Jacqueline Dionora, Abigail Elmido-Mabilangan, Samart Wanchana, Vivek Thakur, Anindya Bandyopadhyay, Darshan S Brar, William Paul Quick
Rice contains genetically and ecologically diverse wild and cultivated species that show a wide variation in plant and leaf architecture. A systematic characterization of leaf anatomy is essential in understanding the dynamics behind such diversity. Therefore, leaf anatomies of 24 Oryza species spanning 11 genetically diverse rice genomes were studied in both lateral and longitudinal directions and possible evolutionary trends were examined. A significant inter-species variation in mesophyll cells, bundle sheath cells, and vein structure was observed, suggesting precise genetic control over these major rice leaf anatomical traits...
2016: PloS One
https://www.readbyqxmd.com/read/27733689/clinical-results-and-mechanical-properties-of-the-carotid-cguard-double-layered-embolic-prevention-stent
#9
Christian Wissgott, Wolfram Schmidt, Christoph Brandt-Wunderlich, Peter Behrens, Reimer Andresen
PURPOSE: To report early clinical outcomes with a novel double-layer stent for the internal carotid artery (ICA) and the in vitro investigation of the stent's mechanical properties. METHODS: A prospective single-center study enrolled 30 consecutive patients (mean age 73.1±6.3 years; 21 men) with symptomatic (n=25) or high-grade (n=5) ICA stenosis treated with the new double-layer carotid CGUARD Embolic Prevention System (EPS) stent, which has an inner open-cell nitinol design with an outer closed-cell polyethylene terephthalate layer...
February 2017: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/27639745/percutaneous-repair-of-the-tricuspid-valve-using-a-novel-cinching-device-acute-and-chronic-experience-in-a-preclinical-large-animal-model
#10
Maurizio Taramasso, Azeem Latib, Paolo Denti, Fabian Nietlispach, Kevin Lynn, Nikola Cesarovic, Alessandro Addis, Maximilian Y Emmert, Andrea Guidotti, Hugo Vanermen, Francesco Maisano
AIMS: The aim of this study was to evaluate the safety, technical feasibility and performance of a new trans-catheter tricuspid repair system. METHODS AND RESULTS: Thirty-one adult swine underwent implantation of a transcatheter tricuspid remodelling system under general anaesthesia. The steerable transcatheter device was introduced through a 24 Fr femoral sheath into the right femoral vein and delivered to the tricuspid annulus on the beating heart. A fixation element was implanted into the tricuspid annulus...
September 18, 2016: EuroIntervention
https://www.readbyqxmd.com/read/27639433/transbulbar-b-mode-sonography-in-multiple-sclerosis-clinical-and-biological-relevance
#11
Roberto De Masi, Stefania Orlando, Aldo Conte, Sergio Pasca, Rocco Scarpello, Pantaleo Spagnolo, Antonella Muscella, Antonella De Donno
Optic nerve sheath diameter quantification by transbulbar B-mode sonography is a recently validated technique, but its clinical relevance in relapse-free multiple sclerosis patients remains unexplored. In an open-label, comparative, cross-sectional study, we aimed to assess possible differences between patients and healthy controls in terms of optic nerve sheath diameter and its correlation with clinical/paraclinical parameters in this disease. Sixty unselected relapse-free patients and 35 matched healthy controls underwent transbulbar B-mode sonography...
December 2016: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/27638098/frequency-and-effect-of-access-related-vascular-injury-and-subsequent-vascular-intervention-after-transcatheter-aortic-valve-replacement
#12
Ditte Dencker, Mikkel Taudorf, N H Vincent Luk, Michael B Nielsen, Klaus F Kofoed, Torben V Schroeder, Lars Søndergaard, Lars Lönn, Ole De Backer
Vascular access and closure remain a challenge in transcatheter aortic valve replacement (TAVR). This single-center study aimed to report the incidence, predictive factors, and clinical outcomes of access-related vascular injury and subsequent vascular intervention. During a 30-month period, 365 patients underwent TAVR and 333 patients (94%) were treated by true percutaneous transfemoral approach. Of this latter group, 83 patients (25%) had an access-related vascular injury that was managed by the use of a covered self-expanding stent (n = 49), balloon angioplasty (n = 33), or by surgical intervention (n = 1)...
October 15, 2016: American Journal of Cardiology
https://www.readbyqxmd.com/read/27612515/enhanced-expansion-and-sustained-inductive-function-of-skin-derived-precursor-cells-in-computer-controlled-stirred-suspension-bioreactors
#13
Natacha A Agabalyan, Breanna S Borys, Holly D Sparks, Kathryn Boon, Eko W Raharjo, Sepideh Abbasi, Michael S Kallos, Jeff Biernaskie
: : Endogenous dermal stem cells (DSCs) reside in the adult hair follicle mesenchyme and can be isolated and grown in vitro as self-renewing colonies called skin-derived precursors (SKPs). Following transplantation into skin, SKPs can generate new dermis and reconstitute the dermal papilla and connective tissue sheath, suggesting they could have important therapeutic value for the treatment of skin disease (alopecia) or injury. Controlled cell culture processes must be developed to efficiently and safely generate sufficient stem cell numbers for clinical use...
September 9, 2016: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/27551190/the-first-record-of-the-millipede-genus-streptogonopus-attems-1914-from-vietnam-with-description-of-a-new-species-diplopoda-polydesmida-paradoxosomatidae
#14
Anh D Nguyen, Kuem-Hee Jang, Ui-Wook Hwang
This paper describes a new species of the millipede genus Streptogonopus Attems, 1914, Streptogonopus montanus sp. n. from Vietnam, the first record of Streptogonopus in Vietnam. The new species is characterised by the solenophore completely sheathing the solenomere, both coiled twice, and the solenophore with a small spine at its middle. The species was found at ca. 1,800-2,100 m on Ngoc Linh Mountain. This first record for the genus in the Indochina peninsula has expanded its distributional range to the easternmost part of Southeast Asian mainland...
2016: ZooKeys
https://www.readbyqxmd.com/read/27502708/phase-ii-study-of-mln8237-alisertib-in-advanced-metastatic-sarcoma
#15
M A Dickson, M R Mahoney, W D Tap, S P D'Angelo, M L Keohan, B A Van Tine, M Agulnik, L E Horvath, J S Nair, G K Schwartz
BACKGROUND: Aurora kinase A (AURKA) is commonly overexpressed in sarcoma. The inhibition of AURKA by shRNA or by a specific AURKA inhibitor blocks in vitro proliferation of multiple sarcoma subtypes. MLN8237 (alisertib) is a novel oral adenosine triphosphate-competitive AURKA inhibitor. PATIENTS AND METHODS: This Cancer Therapy Evaluation Program-sponsored phase II study of alisertib was conducted through the Alliance for Clinical Trials in Oncology (A091102). Patients were enrolled into histology-defined cohorts: (i) liposarcoma, (ii) leiomyosarcoma, (iii) undifferentiated sarcoma, (iv) malignant peripheral nerve sheath tumor, or (v) other...
October 2016: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/27395366/pseudolipoblastic-perineurioma-an-unusual-morphological-variant-of-perineurioma-that-may-simulate-liposarcoma
#16
Jorge Torres-Mora, Nasir Ud Din, Albert William Ahrens, Andrew L Folpe
Perineuriomas are rare peripheral nerve sheath tumors arising from or differentiating along the lines of normal perineurial cells. They can be divided into intraneural and soft tissue types, with the latter category including a significant number of morphologic variants. Herein, we further expand their morphological spectrum to include "pseudolipoblastic" perineuriomas. These lesions occurred in the tongue of a 30year old male and in the triceps of a 67year old female and were characterized by bland, epithelioid cells with striking intracytoplasmic vacuolization...
July 6, 2016: Human Pathology
https://www.readbyqxmd.com/read/27394329/a-new-species-of-the-genus-discolaimus-cobb-1913-nematoda-dorylaimida-qudsianematidae-from-qinghai-china
#17
Wen-Jia Wu, Lin Yan, Chun-Ling Xu, Ke Wang, Sheng-Ying Jin, Hui Xie
A new species of the family Qudsianematidae Jairajpuri, 1965 collected from soil from Qinghai Province, China is described as Discolaimus anemaqen n. sp. It is mainly characterized by having a disc-like lip region with six labial sectors separated by six Y-shaped radial grooves; amphid fovea an inverted-stirrup shape; odontostyle aperture 53-59% of its length; anterior part of pharynx with two swellings, basal part expanded gradually with a sheath of tissue visible ventrally and at the base; no groups of large cells observed in cardiac region; female genital system amphidelphic; tail dorsally convex, conoid, with flat ventral side and bluntly rounded terminus, and males not found...
March 7, 2016: Zootaxa
https://www.readbyqxmd.com/read/27337239/results-with-expanded-endonasal-resection-of-skull-base-meningiomas-technical-nuances-and-approach-selection-based-on-an-early-experience
#18
Caroline Hayhurst, Michael E Sughrue, Pankaj A Gore, Phillip A Bonney, Joshua D Burks, Charles Teo
AIM: Reconstruction technique advances have created renewed enthusiasm for the expanded endonasal approach (EEA). However, as with any new technique, early experiences inevitably lead to more selective use of these techniques. We reviewed our experience of the expanded endonasal endoscopic approach for skull base meningiomas and place it in context of the literature. MATERIAL AND METHODS: We performed retrospective review of all endonasal cases performed at our center for histologically proven meningioma...
2016: Turkish Neurosurgery
https://www.readbyqxmd.com/read/27333262/endovascular-placement-of-an-extraluminal-arterial-bypass-graft-in-vitro-feasibility-study
#19
Markus Zimmermann, Jochen Pfeffer, Hong-Sik Na, Martin Liebl, Maximilian Schulze-Hagen, Christiane K Kuhl, Peter Isfort, Philipp Bruners
PURPOSE: A novel approach for arterial bypass grafting using exclusively endovascular techniques was established in-vitro in a phantom model. MATERIAL AND METHODS: The experimental setting consisted of a gel-wax phantom with two embedded parallel fluid-filled silicon tubes simulating the superficial femoral vessels. Through an 8-French sheath, a re-entry catheter (OUTBACK(®), Cordis) was placed in the simulated artery and used to puncture the vascular wall. Then a 0...
December 2016: Minimally Invasive Therapy & Allied Technologies: MITAT
https://www.readbyqxmd.com/read/27321159/over-20-15-n-hyperpolarization-in-under-one-minute-for-metronidazole-an-antibiotic-and-hypoxia-probe
#20
Danila A Barskiy, Roman V Shchepin, Aaron M Coffey, Thomas Theis, Warren S Warren, Boyd M Goodson, Eduard Y Chekmenev
Direct NMR hyperpolarization of naturally abundant (15)N sites in metronidazole is demonstrated using SABRE-SHEATH (Signal Amplification by Reversible Exchange in SHield Enables Alignment Transfer to Heteronuclei). In only a few tens of seconds, nuclear spin polarization P(15)N of up to ∼24% is achieved using parahydrogen with 80% para fraction corresponding to P(15)N ≈ 32% if ∼100% parahydrogen were employed (which would translate to a signal enhancement of ∼0.1-million-fold at 9.4 T). In addition to this demonstration on the directly binding (15)N site (using J(2)H-(15)N), we also hyperpolarized more distant (15)N sites in metronidazole using longer-range spin-spin couplings (J(4)H-(15)N and J(5)H-(15)N)...
July 6, 2016: Journal of the American Chemical Society
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