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https://www.readbyqxmd.com/read/28535567/radiation-dose-and-procedure-time-for-994-ct-guided-spine-pain-control-procedures
#1
Matthew S Lazarus, Rebecca B Forman, Alan L Brook, Todd S Miller
BACKGROUND: Image guidance for spine pain control procedures, including epidural steroid injection, nerve root block, and facet block, can be performed with either computed tomography (CT) or conventional fluoroscopy. CT has the advantage of improved anatomic localization and use of air for contrast; however, there are concerns that CT leads to higher radiation dose and longer procedure time. OBJECTIVE: To evaluate procedure time and radiation dose for multiple types of spine pain control procedures performed under CT guidance...
May 2017: Pain Physician
https://www.readbyqxmd.com/read/28533015/in%C3%A2-vitro-comparison-of-the-load-bearing-capacity-of-ceramic-and-metal-ceramic-resin-bonded-fixed-dental-prostheses-in-the-posterior-region
#2
Wolfgang Bömicke, Moritz Waldecker, Johannes Krisam, Peter Rammelsberg, Stefan Rues
STATEMENT OF PROBLEM: The clinical use of ceramic resin-bonded fixed dental prostheses (RBFDPs) in the posterior region is desirable for esthetic and biological reasons but has been associated with many technical problems, including fractures or chipping of the veneer. Although these problems may be overcome by using monolithic zirconia, information is lacking about the load-bearing capacity of resin-bonded monolithic zirconia restorations for replacing a molar. PURPOSE: The purpose of this in vitro study was to compare the load-bearing capacity (Fu), the load at initial damage (F1d), and the failure pattern of posterior RBFDPs fabricated from monolithic zirconia (MZr), veneered zirconia (VZr), and veneered cobalt-chromium (VCo)...
May 20, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28532291/using-key-informant-method-to-determine-the-prevalence-and-causes-of-childhood-blindness-in-south-eastern-nigeria
#3
Ada E Aghaji, Ifeoma R Ezegwui, Jude O Shiweobi, Cyril C Mamah, Mary N Okoloagu, Ernest N Onwasigwe
PURPOSE: To determine the prevalence and causes of childhood blindness in an underserved community in south-eastern Nigeria using the key informant method. METHODS: This was a descriptive cross-sectional study. Key informants (KI) appointed by their respective communities received 1-day training on identification of blind children in their communities. Two weeks later, the research team visited the agreed sites within the community and examined the identified children...
May 22, 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/28531336/loop-gain-predicts-the-response-to-upper-airway-surgery-in-patients-with-obstructive-sleep-apnoea-ventilatory-control-abnormalities-predict-surgical-responsiveness
#4
Simon A Joosten, Paul Leong, Shane A Landry, Scott A Sands, Philip I Terrill, Dwayne Mann, Anthony Turton, Jhanavi Rangaswamy, Christopher Andara, Glen Burgess, Darren Mansfield, Garun S Hamilton, Bradley A Edwards
Study Objectives: Upper airway surgery is often recommended to treat OSA patients who cannot tolerate continuous positive airways pressure (CPAP). However, the response to surgery is variable, potentially because it does not improve the non-anatomical factors (i.e. loop gain and arousal threshold) causing OSA. Measuring these traits clinically might predict responses to surgery. Our primary objective was to test the value of loop gain and arousal threshold to predict surgical success defined as 50% reduction in apnea-hypopnea index (AHI) and AHI <10 events/hr post-surgery...
May 22, 2017: Sleep
https://www.readbyqxmd.com/read/28529476/two-parallel-olfactory-pathways-for-processing-general-odors-in-a-cockroach
#5
Hidehiro Watanabe, Hiroshi Nishino, Makoto Mizunami, Fumio Yokohari
In animals, sensory processing via parallel pathways, including the olfactory system, is a common design. However, the mechanisms that parallel pathways use to encode highly complex and dynamic odor signals remain unclear. In the current study, we examined the anatomical and physiological features of parallel olfactory pathways in an evolutionally basal insect, the cockroach Periplaneta americana. In this insect, the entire system for processing general odors, from olfactory sensory neurons to higher brain centers, is anatomically segregated into two parallel pathways...
2017: Frontiers in Neural Circuits
https://www.readbyqxmd.com/read/28529045/influence-of-preoperative-imaging-on-fibula-free-flap-harvesting
#6
R Gryseleyn, M Schlund, P Pigache, T Wojcik, G Raoul, J Ferri
INTRODUCTION: The fibula free flap (FFF) is the gold standard for the reconstruction of large maxillofacial defects. Magnetic resonance angiography (MRA) seems to supersede digital subtraction angiography (DSA) as the reference in preoperative evaluation, being non-invasive and having equivalent diagnostic results. The aim of this study was to assess the impact of preoperative MRA versus DSA on the viability of FFF and its success rate. MATERIAL AND METHODS: A total of 216 patients, who underwent mandibular or maxillary FFF reconstruction from January 1995 to January 2011, were retrospectively included in the study...
May 18, 2017: Journal of Stomatology, Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28528897/lateral-lumbar-interbody-fusion-at-the-lumbosacral-junction
#7
Timothy L T Siu, Kainu Lin
Due to the obstruction of the iliac crest and the retroperitoneal vessels, lateral lumbar interbody fusion (LLIF) is generally considered contraindicated at the lumbosacral junction (LSJ). In particular the 'rise' of the psoas from the vertebral column in the lower lumbar segments has been associated with significant overlap of the lumbar plexus with the vertebral body and exclusion of a safe transpsoas entry. However in selected individuals anatomical variations may help circumvent the difficulties and the anatomical corridor posterior to the lumbar plexus may provide an alternative to the conventional anterior approach...
May 18, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28528627/physical-risk-factors-identification-based-on-body-sensor-network-combined-to-videotaping
#8
Nicolas Vignais, Fabien Bernard, Gérard Touvenot, Jean-Claude Sagot
The aim of this study was to perform an ergonomic analysis of a material handling task by combining a subtask video analysis and a RULA computation, implemented continuously through a motion capture system combining inertial sensors and electrogoniometers. Five workers participated to the experiment. Seven inertial measurement units, placed on the worker's upper body (pelvis, thorax, head, arms, forearms), were implemented through a biomechanical model of the upper body to continuously provide trunk, neck, shoulder and elbow joint angles...
May 18, 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/28528360/a-spiking-neural-network-model-of-the-midbrain-superior-colliculus-that-generates-saccadic-motor-commands
#9
Bahadir Kasap, A John van Opstal
Single-unit recordings suggest that the midbrain superior colliculus (SC) acts as an optimal controller for saccadic gaze shifts. The SC is proposed to be the site within the visuomotor system where the nonlinear spatial-to-temporal transformation is carried out: the population encodes the intended saccade vector by its location in the motor map (spatial), and its trajectory and velocity by the distribution of firing rates (temporal). The neurons' burst profiles vary systematically with their anatomical positions and intended saccade vectors, to account for the nonlinear main-sequence kinematics of saccades...
May 20, 2017: Biological Cybernetics
https://www.readbyqxmd.com/read/28528146/prognostic-value-of-coronary-ct-angiography-with-selective-pet-perfusion-imaging-in-coronary-artery-disease
#10
Teemu Maaniitty, Iida Stenström, Jeroen J Bax, Valtteri Uusitalo, Heikki Ukkonen, Sami Kajander, Maija Mäki, Antti Saraste, Juhani Knuuti
OBJECTIVES: The purpose of this study was to evaluate the prognostic value of sequential hybrid imaging strategy in which positron emission tomography (PET) perfusion imaging is performed selectively in patients with suspected obstructive coronary artery disease (CAD) on coronary computed tomography angiography (CTA). BACKGROUND: Coronary CTA is an accurate diagnostic test for excluding obstructive CAD. However, the positive predictive value is suboptimal. METHODS: We investigated 864 consecutive symptomatic patients with intermediate probability of CAD who adhered to the sequential imaging approach...
May 15, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28526621/electrophysiological-signatures-of-phonological-and-semantic-maintenance-in-sentence-repetition
#11
Jed A Meltzer, Aneta Kielar, Lilia Panamsky, Kira A Links, Tiffany Deschamps, Rosie C Leigh
Verbal short-term memory comprises resources for phonological rehearsal, which have been characterized anatomically, and for maintenance of semantic information, which are less understood. Sentence repetition tasks tap both processes interactively. To distinguish brain activity involved in phonological vs. semantic maintenance, we recorded magnetoencephalography during a sentence repetition task, incorporating three manipulations emphasizing one mechanism over the other. Participants heard sentences or word lists and attempted to repeat them verbatim after a 5-second delay...
May 16, 2017: NeuroImage
https://www.readbyqxmd.com/read/28522111/incidence-and-trends-of-basal-cell-carcinoma-and-cutaneous-squamous-cell-carcinoma-a-population-based-study-in-olmsted-county-minnesota-2000-to-2010
#12
John G Muzic, Adam R Schmitt, Adam C Wright, Dema T Alniemi, Adeel S Zubair, Jeannette M Olazagasti Lourido, Ivette M Sosa Seda, Amy L Weaver, Christian L Baum
OBJECTIVE: To determine population-based incidence estimates of basal cell carcinoma (BCC) and cutaneous squamous cell carcinoma (cSCC). PATIENTS AND METHODS: We reviewed the medical records of a population-based cohort diagnosed with nonmelanoma skin cancer between January 2, 2000, and December 31, 2010. The age- and sex-adjusted incidence rates were calculated and compared with estimates from previous periods. RESULTS: The age-adjusted BCC incidence (cases per 100,000 person-years) was 360...
May 10, 2017: Mayo Clinic Proceedings
https://www.readbyqxmd.com/read/28521639/the-discovery-of-the-lymphatic-system-in-the-seventeenth-century-part-iv-the-controversy
#13
Raphael Suy, Sarah Thomis, Inge Fourneau
A controversy over the transport of chyle and lymph started a few weeks after the publication of Pecquet's Experimenta Nova Anatomica. There are records of nearly seventy people who had an active interest in this matter. Three issues were discussed: the purpose of the liver and especially its haematopoietic function, the capacity of the thoracic duct to transport all chyle, and the purpose of the lymph vessels. The controversy over the use of the lacteals and the lymph vessels subsided about 20 years after the first publication of the new theories...
May 19, 2017: Acta Chirurgica Belgica
https://www.readbyqxmd.com/read/28521342/preoperative-ultrasound-guided-wire-localization-of-the-lateral-femoral-cutaneous-nerve
#14
Amgad S Hanna, Mark E Ehlers, Kenneth S Lee
BACKGROUND: Difficulty and sometimes inability to find the lateral femoral cutaneous nerve (LFCN) intraoperatively is well known. Variabilities in the course of the nerve are well documented in the literature. In a previous paper, we defined a tight fascial canal that completely surrounds the LFCN in the proximal thigh. These 2 factors sometimes render finding the nerve intraoperatively, to treat meralgia paresthetica, very challenging. OBJECTIVE: To explore the use of preoperative ultrasound to minimize operative time and eliminate situations in which the nerve is not found...
June 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28517552/clinical-and-radiographic-outcomes-of-immediate-and-delayed-placement-of-dental-implants-in-molar-and-premolar-regions
#15
Joon-Kyu Kim, Hyun-Joong Yoon
PURPOSE: The purpose of this retrospective study was to determine clinical and radiographic outcomes of immediate and delayed placement of dental implants in molar and premolar regions. MATERIALS AND METHODS: Clinical and radiographic records of 116 patients who received implants in molar and premolar regions were included in this study. After implantation, patients were recalled for assessments at 1 month, 3 months, 6 months, 1 year, and every year thereafter. In addition, anatomic location, type of prosthesis, gender, stage, diameter, and length of implants were analyzed...
May 18, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/28516728/increased-heterogeneity-of-airway-calibre-in-adult-rats-after-hypoxia-induced-intrauterine-growth-restriction
#16
Kimberley C W Wang, Jude S Morton, Sandra T Davidge, Alexander N Larcombe, Alan L James, Graham M Donovan, Peter B Noble
BACKGROUND AND OBJECTIVE: Intrauterine growth restriction (IUGR) is associated with asthma development. We hypothesized that IUGR disrupts airway development leading to postnatal structural abnormalities of the airway that predispose to disease. This study therefore examined structural changes to the airway and lung in a rat model of maternal hypoxia-induced IUGR. METHODS: Pregnant rats were housed under hypoxic conditions (11.5% O2 ) from gestational days (GDs) 13 to 20 (pseudoglandular-canalicular stages, i...
May 17, 2017: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/28512869/patterns-of-head-and-neck-sarcoma-in-australia
#17
Roger H Woods, J Alexa Potter, Jessica L Reid, Jennie Louise, Taryn Bessen, Gelareh Farshid, Susan J Neuhaus
BACKGROUND: Sarcomas affecting the head and neck often require complex management due to the combination of anatomic, aesthetic and oncological considerations. The incidence and patterns of presentation are poorly understood and have not been reviewed in the Australian population. METHOD: This study sourced incidence and demographic data from the National Cancer Registry at the Australian Institute of Health and Welfare for the years 1982-2009 (corresponding to 97...
May 16, 2017: ANZ Journal of Surgery
https://www.readbyqxmd.com/read/28512689/long-term-results-of-fibular-achilles-tenodesis-westin-s-tenodesis-for-paralytic-pes-calcaneus-is-hypercorrection-avoidable-a-longitudinal-retrospective-study
#18
Helder Henzo Yamada, Patricia Maria Moraes de Barros Fucs
PURPOSE: The purpose of this study was to review all cases of patients submitted to Westin's tenodesis, who had calcaneus feet secondary to myelomeningocele sequel, in order to evaluate the anatomical change provided by surgery and also to verify, in a long-term follow-up, the inversion of the deformity depending on the patient's age. METHODS: In this longitudinal retrospective study, all medical records of patients with myelomeningocele sequelae submitted to Westin's tenodesis from 1993 to 2013 in a public university hospital were reviewed...
May 16, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28508924/intractable-epistaxis-which-arteries-are-responsible-an-angiographic-study
#19
Guillaume de Bonnecaze, Y Gallois, P Chaynes, F Bonneville, A Dupret-Bories, E Chantalat, E Serrano
PURPOSE: Epistaxis constitutes a significant proportion of the Otolaryngologist's emergency workload. Optimal management differs in relation to the anatomic origin of the bleeding. The outcome of our study was to determine which artery(ies) could be considered as the cause of severe bleeding in the context of severe epistaxis. METHODS: Fifty-five procedures of embolization preceded by angiography were reviewed. Medical records of interventionally treated patients were analysed for demographics, medical history, risk factors and clinical data...
May 16, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28508917/dowel-pinning-for-metacarpal-and-metatarsal-fractures-in-dogs
#20
Matthias Kornmayer, Ulrike Matis
OBJECTIVE: To evaluate a dowel pinning technique for metacarpal and metatarsal fractures in dogs. MATERIAL AND METHODS: Medical records of 13 dogs with complete clinical and radiographic follow-up examinations after a median observation time of 5 months were evaluated retrospectively. Assessment included fracture data, number of stabilized bones versus number of fractured bones and parameters of internal fixation including postoperative axial alignment and position of implants assessed on serial radiographs...
May 16, 2017: Tierärztliche Praxis. Ausgabe K, Kleintiere/Heimtiere
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