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https://www.readbyqxmd.com/read/28810284/-development-of-non-arteritic-anterior-ischaemic-optic-neuropathy-in-the-initially-unaffected-fellow-eye-in-patients-treated-with-systemic-corticosteroids
#1
Artur Pahor, Dusica Pahor
Background The objective of this prospective pilot study was to evaluate the results of systemic corticosteroid therapy in patient with non-arteritic anterior ischaemic neuropathy of the optical nerve (NAION) for an observation period of one year and to measure the NAION incidence in the initially healthy contralateral eye of these patients. Patients and Methods All patients diagnosed with acute NAION who were admitted to our ward during 2014 and who fulfilled all inclusion criteria for systemic corticosteroid therapy were included in the study...
August 15, 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28808730/-spontaneous-reposition-of-a%C3%A2-hip-prosthesis-after-atraumatic-dislocation
#2
M S Ostapczuk, T Ritte, M Dicks, M Jonas
Traumatic dislocations of a hip prosthesis are not uncommon, and spontaneous repositions are well documented as well. To the best of our knowledge, however, there has been no report of a spontaneous reposition of a dislocated hip prosthesis head on the stem taper. We present such a rare case.
August 14, 2017: Der Orthopäde
https://www.readbyqxmd.com/read/28808638/effect-of-surface-treatment-on-the-mechanical-properties-of-nickel-titanium-files-with-a-similar-cross-section
#3
Sang Won Kwak, Joo Yeong Lee, Hye-Jin Goo, Hyeon-Cheol Kim
OBJECTIVES: The aim of this study was to compare the mechanical properties of various nickel-titanium (NiTi) files with similar tapers and cross-sectional areas depending on whether they were surface-treated. MATERIALS AND METHODS: Three NiTi file systems with a similar convex triangular cross-section and the same ISO #25 tip size were selected for this study: G6 (G6), ProTaper Universal (PTU), and Dia-PT (DPT). To test torsional resistance, 5 mm of the straightened file's tip was fixed between polycarbonate blocks (n = 15/group) and continuous clockwise rotation until fracture was conducted using a customized device...
August 2017: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/28808577/transition-from-intravenous-to-enteral-ketamine-for-treatment-of-nonconvulsive-status-epilepticus
#4
Michael A Pizzi, Prasuna Kamireddi, William O Tatum, Jerry J Shih, Daniel A Jackson, William D Freeman
BACKGROUND: Nonconvulsive status epilepticus (NCSE) is a diagnosis that is often challenging and one that may progress to refractory NCSE. Ketamine is a noncompetitive N-methyl-d-aspartate antagonist that increasingly has been used to treat refractory status epilepticus. Current Neurocritical Care Society guidelines recommend intravenous (IV) ketamine infusion as an alternative treatment for refractory status epilepticus in adults. On the other hand, enteral ketamine use in NCSE has been reported in only 6 cases (1 adult and 5 pediatric) in the literature to date...
2017: Journal of Intensive Care
https://www.readbyqxmd.com/read/28808464/success-rate-and-time-for-bypassing-the-fractured-segments-of-four-niti-rotary-instruments
#5
Alireza Adl, Arash Shahravan, Melika Farshad, Shahab Honar
INTRODUCTION: The aim of this in vitro study was to compare the success rate and time required for bypassing the fractured segments of four different nickel-titanium (NiTi) rotary systems. METHODS AND MATERIALS: This study was conducted on the mesiobuccal canals of 60 mandibular molars with fully-formed apices. Fifteen Flex Master, K3, RaCe and Hero Shaper instruments with 0.04 taper and tip size of #30 and 25 mm in length, were obtained. These instruments were notched at a point 3 mm from the tip of the instrument and were driven into the canals using a handpiece until the instruments fractured and became lodged therein...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28808313/controllable-oscillatory-lateral-coupling-in-a-waveguide-microdisk-resonator-system
#6
Fang Bo, Şahin Kaya Özdemir, Faraz Monifi, Jing Zhang, Guoquan Zhang, Jingjun Xu, Lan Yang
We report a theoretical and experimental study of coupling between a whispering-gallery-mode (WGM) microdisk resonator and a fiber taper which exchange energies at two distinct regions. We observe an oscillatory behavior in the coupling strength as a function of the distance between the two coupling regions when a fiber taper is moved laterally above the resonator at fixed vertical distance. This oscillation is clearly seen in the linewidth of the resonance as well as in the on-resonance transmission. A theoretical model considering for two-point coupling successfully explains the experimental observations as being a result of the interference between the light fields coupled into and out of the resonator at two distinct regions and the light transmitted through the waveguide...
August 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28803814/revision-total-hip-arthroplasty-with-a-monoblock-splined-tapered-grit-blasted-titanium-stem
#7
Michael D Hellman, Sean M Kearns, Daniel D Bohl, Bryan D Haughom, Brett R Levine
BACKGROUND: In revision total hip arthroplasty (THA), proximal femoral bone loss creates a challenge of achieving adequate stem fixation. The purpose of this study was to examine the outcomes of a monoblock, splined, tapered femoral stem in revision THA. METHODS: Outcomes of revision THA using a nonmodular, splined, tapered femoral stem from a single surgeon were reviewed. With a minimum of 2-year follow-up, there were 68 cases (67 patients). Paprosky classification was 3A or greater in 85% of the cases...
July 5, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28801181/the-use-of-oral-corticosteroids-in-inflammatory-bowel-diseases-in-italy-an-ig-ibd-survey
#8
Federica Fascì-Spurio, Gianmichele Meucci, Claudio Papi, Simone Saibeni
AIM: To evaluate how Italian gastroenterologists use corticosteroids in clinical practice for the treatment of Crohn's disease (CD) and ulcerative colitis (UC). MATERIAL AND METHODS: All members of the Italian Group for Inflammatory Bowel Disease (IG-IBD) were invited to fill in a web-based questionnaire. RESULTS: 131/448 (29.2%) members completed the survey. In mild-to-moderate UC and CD relapses, low-bioavailability steroids (LBS) are first-line therapy for 37% and 42% of clinicians, respectively...
July 22, 2017: Digestive and Liver Disease
https://www.readbyqxmd.com/read/28800947/-from-pathogenesis-of-giant-cell-arteritis-to-new-therapeutic-targets
#9
M Samson, B Bonnotte
Giant cell arteritis (GCA) is the most common vasculitis in adults. GCA is a granulomatous large-vessel vasculitis involving the aorta and its major branches in people>50 years. Glucocorticoids (GC) remain the cornerstone of GCA treatment. Prednisone is usually started at 0.7 or 1mg/kg/day depending on the occurrence of ischemic complications. Then, GC are progressively tapered and stopped after a mean duration of 18 months. GC are very efficient but relapses often occur during their tapering. Moreover, GC-related side effects are very common during this long term GC therapy...
August 8, 2017: La Revue de Médecine Interne
https://www.readbyqxmd.com/read/28800598/an-in-silico-evaluation-of-treatment-regimens-for-recurrent-clostridium-difficile-infection
#10
Natalia Blanco, Betsy Foxman, Anurag N Malani, Min Zhang, Seth Walk, Alexander H Rickard, Marisa C Eisenberg
BACKGROUND: Clostridium difficile infection (CDI) is a significant nosocomial infection worldwide, that recurs in as many as 35% of infections. Risk of CDI recurrence varies by ribotype, which also vary in sporulation and germination rates. Whether sporulation/germination mediate risk of recurrence and effectiveness of treatment of recurring CDI remains unclear. We aim to assess the role of sporulation/germination patterns on risk of recurrence, and the relative effectiveness of the recommended tapered/pulsing regimens using an in silico model...
2017: PloS One
https://www.readbyqxmd.com/read/28799750/complex-electron-transfer-pathway-at-a-microelectrode-captured-by-in-situ-nanospectroscopy
#11
Thomas Touzalin, Suzanne Joiret, Emmanuel Maisonhaute, Ivan Thomas Lucas
In the quest for analytical tools which enable the characterization of materials at the nanoscale and under the condition of their operation (in situ, operando), the emerging Tip-Enhanced Raman Spectroscopy (TERS) now enters the spotlight. We demonstrate in this work that a TERS tip can be functionalized and partially insulated to be used as a microelectrode enabling Electrochemical Substrate Enhanced Raman Spectroscopy (EC-SERS) at a single hotspot. This "SERS at a tip" experiment enables to capture the electrochemical transformation of a molecular layer self-assembled on a tapered gold microe-lectrode...
August 11, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28795957/influence-of-abutment-surface-treatments-on-screw-loosening-of-morse-taper-implants
#12
Patricia Mitiko Asanuma Hirayama, Lauren Oliveira Lima Bohner, Juliana Marotti, Washington Steagall, Dalva Cruz Laganá, Pedro Tortamano
PURPOSE: To evaluate the effect of blasting and bonding on abutment surface to prevent screw loosening in Morse taper connections. MATERIAL AND METHODS: Twenty-eight Morse taper connection implants were divided into 4 groups: no treatment (G1), blasting (G2), bonding (G3), and blasting + bonding (G4). In groups G2 and G4, the abutments were blasted with aluminum oxide granules; in groups G3 and G4, the conical abutment region was covered with a thin layer of bond thread lock agent...
August 8, 2017: Implant Dentistry
https://www.readbyqxmd.com/read/28795286/diagnostic-and-therapeutic-strategies-for-patients-with-malignant-epidural-spinal-cord-compression
#13
REVIEW
Dilan A Patel, Jian L Campian
Malignant epidural spinal cord compression (MESCC) is an oncologic emergency with the potential for devastating consequences for patients if not promptly diagnosed and treated. MESCC is diagnosed by imaging. MRI is by far the most sensitive test, preferably with gadolinium. Once the diagnosis of MESCC is suspected, patients with neurologic deficits should receive prompt administration of dexamethasone with a 10-mg IV loading dose followed by 4 mg every 6 h. Quick taper is recommended once the definitive treatment is established...
August 10, 2017: Current Treatment Options in Oncology
https://www.readbyqxmd.com/read/28795045/evaluation-of-sperm-protamine-deficiency-and-apoptosis-in-infertile-men-with-idiopathic-teratozoospermia
#14
Fatemeh Dehghanpour, Nasim Tabibnejad, Farzaneh Fesahat, Fatemeh Yazdinejad, Ali Reza Talebi
OBJECTIVE: Sperm morphology plays an important role in infertility, especially in cases of defects in the heads of spermatozoa. Tapered-head or elongated-head spermatozoa are examples of morphological abnormalities. The aim of this study was to compare the semen parameters, levels of protamine deficiency, and frequency of apoptosis between patients with normozoospermia and those with teratozoospermia with tapered-head spermatozoa. METHODS: Fifty-two semen samples (27 patients with tapered-head sperm and 25 fertile men) were collected and semen analysis was performed according to the World Health Organization criteria for each sample...
June 2017: Clinical and Experimental Reproductive Medicine
https://www.readbyqxmd.com/read/28793976/influence-of-implant-length-and-bone-defect-situation-on-primary-stability-after-distal-femoral-replacement-in-vitro
#15
Jan Nadorf, Simon B Klein, Simone Gantz, Eike Jakubowitz, Jan Philippe Kretzer, Oliver E Bischel
BACKGROUND: Aseptic loosening is the major reason for failure of distal femoral replacement using current modular megaprostheses. Although the same stems are used for proximal and distal replacement, survival rates in clinical studies with distal reconstruction were lower within the same system compared to proximal reconstruction. We analyzed whether primary stability as presupposition for long-term fixation can be achieved with a current tapered stem design. Additionally, we hypothesized that stem length affects primary stability depending on bone defect situations...
August 6, 2017: Knee
https://www.readbyqxmd.com/read/28793780/iatrogenic-opioid-withdrawal-in-critically-ill-patients-a-review-of-assessment-tools-and-management
#16
Ada W Chiu, Sofia Contreras, Sangeeta Mehta, Jennifer Korman, Marc M Perreault, David R Williamson, Lisa D Burry
OBJECTIVE: To (1) provide an overview of the epidemiology, clinical presentation, and risk factors of iatrogenic opioid withdrawal in critically ill patients and (2) conduct a literature review of assessment and management of iatrogenic opioid withdrawal in critically ill patients. DATA SOURCES: We searched MEDLINE (1946-June 2017), EMBASE (1974-June 2017), and CINAHL (1982-June 2017) with the terms opioid withdrawal, opioid, opiate, critical care, critically ill, assessment tool, scale, taper, weaning, and management...
August 1, 2017: Annals of Pharmacotherapy
https://www.readbyqxmd.com/read/28792180/bilateral-acute-anterior-uveitis-and-conjunctivitis-following-intravenous-zoledronic-acid
#17
Samrat Chatterjee, Deepshikha Agrawal
The ocular side-effects of bisphosphonates have the potential to escalate with their widespread use. We report a patient of osteoporosis who was treated with zoledronic acid infusion. He developed ocular pain, redness, watering, photophobia and swelling of both the eyes. He was diagnosed with acute anterior uveitis and conjunctivitis and treated with topical 1% prednisolone acetate and 1% atropine sulphate. The signs of inflammation abated by one week and the steroids were tapered over the next six weeks. There were no further recurrences...
July 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/28792089/plasma-exchange-for-the-management-of-refractory-pruritus-of-cholestasis-a-report-of-three-cases-and-review-of-literature
#18
Rati Chkheidze, Ranjit Joseph, James Burner, Karen Matevosyan
BACKGROUND: Intractable pruritus of cholestasis leads to significant morbidity. Therapeutic plasma exchange (TPE) has been shown to be an effective alternative in the setting of refractory pruritus associated with cholestatic liver disease based on several individual reports. Due to rarity of this approach to intractable pruritus, the literature is sparse and therefore TPE, as a treatment for refractory pruritus is currently not in the apheresis guidelines. We present three additional patients with severe intractable pruritus of cholestasis successfully treated with plasma exchange to add to the mounting literature showing this as an effective and safe adjunctive therapy...
August 9, 2017: Journal of Clinical Apheresis
https://www.readbyqxmd.com/read/28792054/droplet-trapping-and-fast-acoustic-release-in-a-multi-height-device-with-steady-state-flow
#19
Richard W Rambach, Kevin Linder, Michael Heymann, Thomas Franke
We demonstrate a novel multilayer polydimethylsiloxane (PDMS) device for selective storage and release of single emulsion droplets. Drops are captured in a microchannel cavity and can be released on-demand through a triggered surface acoustic wave pulse. The surface acoustic wave (SAW) is excited by a tapered interdigital transducer (TIDT) deposited on a piezoelectric lithium niobate (LiNbO3) substrate and inverts the pressure difference across the cavity trap to push a drop out of the trap and back into the main flow channel...
August 9, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28792053/a-janus-oil-barrel-with-tapered-microhole-arrays-for-spontaneous-high-flux-spilled-oil-absorption-and-storage
#20
Zhen Zhang, Yinghui Zhang, Hua Fan, Yulong Wang, Chen Zhou, Feifei Ren, Sizhu Wu, Guoqiang Li, Yanlei Hu, Jiawen Li, Dong Wu, Jiaru Chu
Porous oil/water separation materials show excellent prospects in the remediation of oil spill accidents. However, several drawbacks such as low flux, limited absorption and storage capacity restrict their practical applications. Hence, a novel Janus oil barrel (superhydrophobic outside wall and superhydrophilic inside wall) constituted by tapered microhole arrayed aluminium foil is designed, which is demonstrated to be a promising device for the remediation of oil spill accidents. Furthermore, the investigation shows that the tapered microholes (taper angle 25-30°) can significantly enhance oil/water intrusion pressures (1-3 times higher than cylindrical holes) and unidirectional transferability which can eliminate the secondary leakage when salvaging full oil barrels without an additional procedure...
August 9, 2017: Nanoscale
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