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Expandable sheath or e-sheath

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https://www.readbyqxmd.com/read/27882604/the-dog-bone-technique-a-novel-easy-and-safe-catheter-maneuver-for-aortic-arch-and-coarctation-stenting
#1
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
#2
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
#3
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
#4
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
#5
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...
October 12, 2016: 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
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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...
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
#14
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
#15
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...
June 22, 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
#16
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
https://www.readbyqxmd.com/read/27275081/spontaneous-arterial-hemorrhage-as-a-complication-of-dengue
#17
Shoma Vinay Rao, Gijoe George Jacob, Nithin Abraham Raju, Sneha Ann Ancheri
Bleeding complications of dengue hemorrhagic fever such as epistaxis, gum bleeding, gastrointestinal bleeding, hypermenorrhea, hematuria, and thrombocytopenia have been documented. A 49-year-old female presented with complaints of intermittent high-grade fever for the past 4 days, lower abdominal pain and altered sensorium for 1 day. Laboratory investigations revealed severe anemia, mild thrombocytopenia, hypofibrinogenemia, and positive dengue serology. Emergency ultrasound examination of the abdomen revealed a possible rapidly expanding hematoma from the inferior epigastric artery and suggested urgent computed tomography (CT) angiogram for confirmation of the same...
May 2016: Indian Journal of Critical Care Medicine
https://www.readbyqxmd.com/read/27250052/transcatheter-balloon-expandable-aortic-valve-implantation-through-an-aortofemoral-bypass-graft
#18
Toru Naganuma, Satoru Mitomo, Shotaro Nakamura, Masafumi Akita, Tatsuya Nakao, Sunao Nakamura
An 84-year-old woman was diagnosed with symptomatic severe aortic stenosis. She had previously undergone aortobifemoral bypass grafting (Y graft) for bilateral iliac stenosis. In view of a high surgical risk, a decision for transcatheter aortic valve implantation (TAVI) was made. An incision was made on the right limb of the Y graft and subsequently a 16 Fr e-sheath was smoothly advanced through the graft. A 23 mm balloon expandable valve was then advanced with no resistance and successfully deployed. This case highlights the feasibility of TAVI through the graft, but requires a thorough preprocedural assessment of the access route using multiple imaging modalities...
2016: Internal Medicine
https://www.readbyqxmd.com/read/27236096/retrograde-stent-placement-for-symptomatic-spontaneous-isolated-dissection-of-the-superior-mesenteric-artery
#19
Hiroshi Mitsuoka, Masanao Nakai, Yasuhiko Terai, Shinnosuke Gotou, Yuuta Miyano, Kouich Tsuchiya, Fumio Yamazaki
Various treatment options are currently available for spontaneous isolated dissection of the superior mesenteric artery (SIDSMA) including conservative management, anticoagulation therapy, endovascular stenting, and surgical repair. We report an experience with retrograde open mesenteric stenting for SIDSMA. A 45-year-old man presented to the emergency department with acute onset of severe abdominal and back pain. Computed tomography angiography revealed a long occlusion of the SMA trunk. Initially, an endovascular solution was attempted, but this was unsuccessful as the guidewire failed to cross the lesion...
August 2016: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/27218024/management-of-the-sequelae-of-severe-congenital-abdominal-wall-defects
#20
Sara Fuentes, Eunate Marti, Maria-Dolores Delgado, Andres Gomez
BACKGROUND: The survival rate of newborns with severe congenital abdominal wall defects has increased. After successfully addressing life-threatening complications, it is necessary to focus on the cosmetic and functional outcomes of the abdominal wall. METHODS: We performed a chart review of five cases treated in our institution. RESULTS: Five patients, ranging from seven to 18 years of age, underwent the following surgical approaches: simple approximation of the rectus abdominis fascia, the rectus abdominis sheath turnover flap, the placement of submuscular tissue expanders, mesh repair, or a combination of these techniques depending on the characteristics of each individual case...
May 2016: Archives of Plastic Surgery
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