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https://www.readbyqxmd.com/read/28528481/consent-an-event-or-a-memory-in-lumbar-spinal-surgery-a-multi-centre-multi-specialty-prospective-study-of-documentation-and-patient-recall-of-consent-content
#1
William B Lo, Ciaran P McAuley, Martin J Gillies, Patrick J Grover, Erlick A C Pereira
STUDY DESIGN: Prospective, multi-centre, multi-specialty medical notes review and patient interview. PURPOSE: The consenting process is an important communication tool which also carries medico-legal implications. While written consent is a pre-requisite before spinal surgery in the UK, the standard and effectiveness of the process have not been assessed previously. This study assesses standard of written consent for elective lumbar decompressive surgery for degenerative disc disease across different regions and specialties in the UK; level of patient recall of the consent content; and identifies factors which affect patient recall...
May 20, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28528480/full-endoscopic-treatment-of-dural-tears-in-lumbar-spine-surgery
#2
Joachim M Oertel, Benedikt W Burkhardt
PURPOSE: An incidental durotomy is a common complication of spinal surgery. Its treatment remains challenging, especially in endoscopic procedures. The objective of this study is to describe a technique for endoscopic dural closure which is safe and effective. METHODS: From a prospective database all endoscopic spinal procedures with incidental durotomy were identified. Retrospectively, video recordings were analysed with a special reference to the applied technique of dural closure...
May 20, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28527584/a-combined-passive-and-active-musculoskeletal-model-study-to-estimate-l4-l5-load-sharing
#3
F Azari, N Arjmand, A Shirazi-Adl, T Rahimi-Moghaddam
A number of geometrically-detailed passive finite element (FE) models of the lumbar spine have been developed and validated under in vitro loading conditions. These models are devoid of muscles and thus cannot be directly used to simulate in vivo loading conditions acting on the lumbar joint structures or spinal implants. Gravity loads and muscle forces estimated by a trunk musculoskeletal (MS) model under twelve static activities were applied to a passive FE model of the L4-L5 segment to estimate load sharing among the joint structures (disc, ligaments, and facets) under simulated in vivo loading conditions...
May 11, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28526754/oxygenation-and-adenosine-deaminase-support-growth-and-proliferation-of-ex-vivo-cultured-drosophila-wing-imaginal-discs
#4
Katrin Strassburger, Franziska K Lorbeer, Marilena Lutz, Fabian Graf, Michael Boutros, Aurelio A Teleman
The Drosophila wing imaginal disc has been an important model system over the past decades for discovering novel biology related to development, signaling, and epithelial morphogenesis. Novel experimental approaches would be enabled by a culturing setup allowing ex vivo cultures of wing discs. Current setups, however, are not able to sustain both growth and cell-cycle progression of wing discs ex vivo. We discover here a setup requiring both oxygenation of the tissue and adenosine deaminase activity in the medium, which supports both growth and proliferation of wing discs for 9 hours...
May 19, 2017: Development
https://www.readbyqxmd.com/read/28526641/elimination-of-subsidence-with-26mm-wide-cages-in-extreme-lateral-interbody-fusion
#5
Gernot Lang, Rodrigo Navarro-Ramirez, Lena Gandevia, Ibrahim Hussain, Jonathan Nakhla, Micaella Zubkov, Roger Härtl
BACKGROUND: Extreme lateral interbody fusion (ELIF) has gained popularity as minimally invasive technique for indirect decompression. However, graft subsidence potentially threatens the long-term success of ELIF. The aim of the study was to evaluate whether 26mm wide cages can eliminate subsidence and subsequent loss of decompression in ELIF. METHODS: Patients undergoing ELIF surgery using a 26mm wide cage were analyzed retrospectively. Patient demographics and peri-operative data for radiographic and clinical outcomes were recorded...
May 16, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28526629/the-ultra-structural-organization-of-the-elastic-network-in-the-intra-and-inter-lamellar-matrix-of-the-intervertebral-disc
#6
J Tavakoli, D M Elliott, J J Costi
The inter-lamellar matrix (ILM) -located between adjacent lamellae of the annulus fibrosus- consists of a complex structure of elastic fibres, while elastic fibers of the intra-lamellar region are aligned predominantly parallel to the collagen fibers. The organization of elastic fibres under low magnification, in both inter- and intra-lamellar regions, was studied by light microscopic analysis of histologically prepared samples; however, little is known about their ultrastructure. An ultrastructural visualization of elastic fibres in the inter-lamellar matrix is crucial for describing their contribution to structural integrity, as well as mechanical properties of the annulus fibrosus...
May 16, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28526405/hypoxia-inducible-factor-l%C3%AE-mediates-aggrecan-and-collagen-%C3%AE-expression-via-notch1-signaling-in-nucleus-pulposus-cells-during-intervertebral-disc-degeneration
#7
Zhuochao Liu, Changwei Li, Xiangchao Meng, Yunting Bai, Jin Qi, Jun Wang, Qi Zhou, Weibin Zhang, Xingkai Zhang
Although hypoxia-inducible factor-lα (HIF-lα) has been reported to have an important role in the metabolism and synthesis of the extracellular matrix (ECM) of nucleus pulposus cells (NPCs), the underlying mechanism has not been fully clarified. Here, we show for the first time that NOTCH1 expression is decreased in NPs isolated from degenerated human intervertebral discs (IVDs), as well as in the NPs of NP-specific HIF-1α(-/-) mice. Our study reveals that overexpression of HIF-1α leads to increased expression of NOTCH1, the NOTCH1 ligand JAGGED1, and its target gene hairy and enhancer of split-1 (HES1), while also upregulating collagen Π and aggrecan expression in human NPCs...
May 16, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28526171/chlorhexidine-gluconate-or-polyhexamethylene-biguanide-disc-dressing-to-reduce-the-incidence-of-central-line-associated-bloodstream-infection-a-feasibility-randomized-controlled-trial-the-clabsi-trial
#8
J Webster, E Larsen, N Marsh, A Choudhury, P Harris, C M Rickard
BACKGROUND: A number of antimicrobial-impregnated discs to prevent central-line-associated bloodstream infection (CLABSI) are marketed but it is unclear which disc is most effective. AIM: To investigate the feasibility and safety of comparing two antimicrobial-impregnated discs to prevent CLABSI. METHODS: A single-centre, parallel group, randomized controlled trial was conducted in a 929-bed tertiary referral hospital. Hospital inpatients requiring a peripherally inserted central catheter were randomized to chlorhexidine gluconate (CHG) or polyhexamethylene biguanide (PHMB) disc dressing group...
April 16, 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/28525790/quantitative-lc-hrms-determination-of-selected-cardiovascular-drugs-in-dried-blood-spots-as-an-indicator-of-adherence-to-medication
#9
Dennis Bernieh, Graham Lawson, Sangeeta Tanna
Dried blood spot (DBS) sampling was investigated as a means of obtaining micro-volume blood samples for the quantitative analyses of ten commonly UK prescribed cardiovascular drugs as an indicator of medication adherence. An 8mm disc was punched out from each DBS from calibration, quality control and volunteer samples and extracted using methanol containing the internal standard. Each extract was evaporated to dryness, the residue reconstituted in methanol:water (40:60v/v) containing 0.1% formic acid and analysed by LC-HRMS...
May 6, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28525492/degenerative-cervical-disc-disease-long-term-changes-in-sagittal-alignment-and-their-clinical-implications-after-cervical-interbody-fusion-cage-subsidence-a-prospective-study-with-standalone-lordotic-tantalum-cages
#10
Félix Tomé-Bermejo, Julián A Morales-Valencia, Javier Moreno-Pérez, Juan Marfil-Pérez, Elena Díaz-Dominguez, Angel R Piñera, Luis Alvarez
STUDY DESIGN: A retrospective, observational study of prospectively collected outcomes. OBJECTIVE: To investigate the long-term clinical course of anterior cervical discectomy and fusion with interbody fusion cages (ACDF-IFC) with lordotic tantalum implants and to correlate the radiologic findings with the clinical outcomes, with special emphasis on the significance and the influence of implant subsidence. SUMMARY OF BACKGROUND DATA: Cage subsidence is the most frequently reported complication after ACDF-IFC...
June 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28525471/cervical-disk-replacement-with-discover-versus-fusion-in-a-single-level-cervical-disk-disease-a-prospective-single-center-randomized-trial-with-a-minimum-2-year-follow-up
#11
Marjan Rožanković, Sergej M Marasanov, Miroslav Vukić
STUDY DESIGN: Prospective randomized study. OBJECTIVE: To compare the clinical outcome after Discover arthroplasty versus anterior cervical discectomy and fusion (ACDF) in patients treated for symptomatic single-level cervical disk disease. SUMMARY OF BACKGROUND DATA: ACDF is still the gold standard for surgical treatment of cervical spine degenerative disk disease. However, results of many studies suggest that it may cause degenerative changes at levels immediately above and below the fusion, known as adjacent segment degenerative disease...
June 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28525292/comparison-of-adjacent-segment-degeneration-after-nonrigid-fixation-system-and-posterior-lumbar-interbody-fusion-for-single-level-lumbar-disc-herniation-a-new-method-of-mri-analysis-of-lumbar-nucleus-pulposus-volume
#12
Shaofeng Yang, Yanan Liu, Zhaohua Bao, Jun Zou, Huilin Yang
PURPOSE: To evaluate the influence of a nonrigid fixation system and posterior lumbar interbody fusion on adjacent intervertebral disc degeneration by using MRI analysis of lumbar nucleus pulposus volume for single-level lumbar disc herniation. MATERIALS AND METHODS: We selected 112 patients who underwent nonrigid fixation (17 men and 44 women) or posterior lumbar interbody fusion (13 men and 38 women) for this retrospective study. Based on the T2-weighted magnetic resonance imaging (MRI) scans taken preoperatively, and 6, 12, and 24 months after surgery, the nucleus pulposus in the upper segments of the operated level was considered an ellipsoid, and their volumes were measured respectively and then compared between the two groups...
May 19, 2017: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
https://www.readbyqxmd.com/read/28524147/-complex-treatment-results-in-a-congenital-glaucoma-patient-case-report
#13
O L Fabrikantov, S I Nikolashin, Yu V Matrosova, V A Kozlov, A E Kopylov, E S Pirogova
Early diagnosis of congenital glaucoma allows surgery to be performed at the stage of reversible glaucomatous alterations of the optic disc and retina. In primary congenital glaucoma, the main reason for visual acuity reduction following surgical stabilization of the intraocular pressure are corneal changes. These include an increased corneal diameter, Haab's striae, areas of thickening and a greater posterior elevation. The resultant irregular astigmatism leads to amblyopia and a marked decrease in visual acuity...
2017: Vestnik Oftalmologii
https://www.readbyqxmd.com/read/28524136/-clinical-evaluation-of-the-effectiveness-of-cholinesterase-inhibition-with-neuromidin-in-the-treatment-of-primary-glaucoma-patients
#14
I A Zakharova, R V Avdeev, V A Pristavka, S N Surnin, V Yu Makhmutov, I I Savrasova
AIM: to investigate neuromidin effectiveness in the treatment of patients with primary glaucoma and compensated intraocular pressure (IOP). MATERIAL AND METHODS: A total of 40 patients (80 eyes) were examined. Of them, 10 eyes with early glaucoma, 36 eyes with moderate-stage glaucoma, 33 eyes with advanced glaucoma, and 1 eye with end-stage glaucoma. In 19 eyes, IOP was controlled through beta-blockers, in 11 eyes - through carbonic anhydrase inhibitors, in 10 eyes - through prostaglandin analogues, and in 39 eyes - through combination drugs...
2017: Vestnik Oftalmologii
https://www.readbyqxmd.com/read/28523646/phylogenetics-and-ecomorphology-of-emarginate-primary-feathers
#15
Brett Klaassen van Oorschot, Ho Kwan Tang, Bret W Tobalske
Wing tip slots are a distinct morphological trait broadly expressed across the avian clade, but are generally perceived to be unique to soaring raptors. These slots are the result of emarginations on the distal leading and trailing edges of primary feathers, and allow the feathers to behave as individual airfoils. Research suggests these emarginate feathers are an adaptation to increase glide efficiency by mitigating induced drag in a manner similar to aircraft winglets. If so, we might expect birds known for gliding and soaring to exhibit emarginate feather morphology; however, that is not always the case...
May 18, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/28523382/adult-spinal-deformity-effectiveness-of-interbody-lordotic-cages-to-restore-disc-angle-and-spino-pelvic-parameters-through-completely-mini-invasive-trans-psoas-and-hybrid-approach
#16
Giuseppe Barone, Laura Scaramuzzo, Antonino Zagra, Fabrizio Giudici, Andrea Perna, Luca Proietti
PURPOSE: The aim of the study is to assess and quantify the effectiveness of interbody lordotic cages applied by trans-psoas approach to improve radiographic parameters, showing the differences between completely mini-invasive and hybrid approach. METHODS: We collected data of 65 patients affected by degenerative lumbar deformity/diseases and underwent mini-invasive lateral interbody fusion followed by percutaneous (group A, completely mini-invasive) or open (group B, hybrid) posterior instrumentation...
May 18, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28523333/giant-cell-arteritis-with-arteritic-anterior-ischemic-optic-neuropathy
#17
Horia Tudor Stanca, Elena Suvac, Mihnea Munteanu, Dragoş Cătălin Jianu, Andrei Gheorghe Marius Motoc, Gavril Cosmin Roşca, Ovidiu Boruga
Giant cell arteritis (GCA) is an inflammatory vasculitis of unknown etiology that mainly involves large and medium arteries, particularly the cranial branches of the aorta. GCA with consecutive arteritic-anterior ischemic optic neuropathy (A-AION) has rarely been diagnosed in Romania. Recently, we encountered an 83-year-old patient who presented with left eye visual impairment and corresponding optic disc diffusely swollen and pale. He also had typical manifestations of GCA, such as malaise, and temporal headache, and a highly elevated erythrocyte sedimentation rate and C-reactive protein level...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/28523278/chondrocyte-specific-knockout-of-tsc-1-leads-to-congenital-spinal-deformity-in-mice
#18
Cheng Yang, Yuhui Chen, Zhen Li, He Cao, Keming Chen, Pinglin Lai, Bo Yan, Bin Huang, Jiajun Tang, Shicai Fan, Daozhang Cai, Dadi Jin, Xiaochun Bai, Rongping Zhou
Congenital spinal deformity is the most severe clinical orthopedic issue worldwide. Among all the pathological processes of congenital spinal deformity, the imbalance of endochondral ossification is considered to be the most important developmental cause of spinal dysplasia. We established chondrocyte-specific TSC-1 knockout (KO) mice to overactivate the energy metabolic component, mammalian target of rapamycin complex 1 (mTORC1), and measured the spinal development by general, imaging, histological, and Western-blot assessments...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28521996/antimicrobial-agent-free-hybrid-cationic-starch-sodium-alginate-polyelectrolyte-films-for-food-packaging-materials
#19
Ferhat Şen, İrem Uzunsoy, Emre Baştürk, Memet Vezir Kahraman
This study aimed to develop polyelectrolyte structured antimicrobial food packaging materials that do not contain any antimicrobial agents. Cationic starch was synthesized and characterized by FT-IR spectroscopy and (1)H NMR spectroscopy. Its nitrogen content was determined by Kjeldahl method. Polyelectrolyte structured antimicrobial food packaging materials were prepared using starch, cationic starch and sodium alginate. Antimicrobial activity of materials was defined by inhibition zone method (disc diffusion method)...
August 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28520583/focal-capillary-dropout-associated-with-optic-disc-drusen-using-optical-coherence-tomographic-angiography
#20
Eric D Gaier, Joseph F Rizzo, John B Miller, Dean M Cestari
Optic disc drusen may be a cause of visual field defects and visual loss. The mechanism by which this occurs is unclear. We report a patient who developed decreased vision in the right eye and was found to have a heavy burden of superficial optic disc drusen. Optical coherence tomography (OCT) confirmed focal retinal nerve fiber layer thinning that corresponded with the distribution of drusen. OCT angiography, with superficial laminar segmentation, showed focal capillary attenuation overlying the most prominent drusen...
May 4, 2017: Journal of Neuro-ophthalmology: the Official Journal of the North American Neuro-Ophthalmology Society
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