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https://www.readbyqxmd.com/read/28325005/dynamic-modeling-of-apnea-induced-concurrent-variations-in-arterial-blood-pressure-and-cerebral-blood-flow-velocity
#1
Raichel Alex, Rong Zhang, Donald E Watenpaugh, Khosrow Behbehani
Obstructive Sleep Apnea (OSA) is characterized by partial (hypopnea) or complete cessation (apnea) of airflow to the lungs during sleep. It has been previously reported that apnea episodes lead to significant rise in instantaneous blood pressure concomitant with a rise in cerebral blood flow velocity, indicating loss of cerebral autoregulation during the episodes. In this study, we have used Auto Regressive Moving Average model (ARMA (na, nb, nk)) to quantify OSA induced dynamic changes in cerebral blood flow velocity (CBFV) with beat to beat blood pressure (BP) as an input...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324977/a-novel-method-to-assess-angle-sensor-performance-for-wearable-exoskeletal-joint-kinematics
#2
Nicholas B Bolus, Geza F Kogler, Omer T Inan
Full range of motion (ROM) at a joint is necessary for efficient and adaptive movement; as such, it is an essential clinical evaluation measure for assessing an individual's motor function, which can be affected by any number of musculoskeletal injuries and neuropathies. Measurement of joint ROM in the clinic has classically been accomplished statically through the use of a manual goniometer. More recent efforts in the fields of prosthetics and orthotics have demonstrated the potential utility of wearable systems (e...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324925/non-invasive-imaging-of-ventricular-activation-during-pacing-and-arrhythmia-methods-and-validation
#3
Long Yu, Steven Pogwizd, Bin He
Cardiovascular disease continued to be a leading killer world widely. Each year, about 400,000 cases of sudden cardiac arrest are reported in the U.S. alone. Clinically, radio-frequency ablative procedure has become widely applied in the treatment of ventricular arrhythmia. Non-invasive approaches have been demonstrated to be able to provide important information on the arrhythmogenesis and potentially assist in the clinical practice. In this work, we develop and validate a novel temporal sparse based imaging method, Cardiac Electrical Sparse Imaging (CESI)...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324820/the-relationship-between-motorcycle-rider-behaviour-questionnaire-scores-and-crashes-for-riders-in-australia
#4
A N Stephens, J Brown, L de Rome, M R J Baldock, R Fernandes, M Fitzharris
Motorcycle riders are over-represented in road fatalities in Australia. While riders represent 18% of the road users killed each year, motorcycle registrations constitute only 4.5% of the registered vehicle fleet. The Motorcycle Rider Behaviour Questionnaire (MRBQ) was developed with a view toward understanding behaviours likely to be associated with crash risk. These include behaviours that are either intentional (such as violations of road and speed regulations and stunts) or unintentional (such as errors relating to traffic or control of the motorcycle), as well as protective behaviours related to use of safety equipment...
March 18, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/28324790/a-new-approach-to-estimating-the-evoked-hemodynamic-response-applied-to-dual-channel-functional-near-infrared-spectroscopy
#5
Reza Arefi Shirvan, Seyed Kamaledin Setarehdan, Ali Motie Nasrabadi
BACKGROUND: Brain activity can be measured non-invasively by means of functional near-infrared spectroscopy (fNIRS) which records hemodynamics of the brain tissue. Sensitivity of fNIRS to the brain activity is however being affected by natural physiological brain hemodynamics (systemic interferences). Functional hemodynamic signal extraction from physiological interferences still remains a challenging task. NEW METHOD: This paper presents a novel effective algorithm for real-time physiological interference reduction and recovery of the evoked brain activity using a dual channel fNIRS system...
March 18, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28324240/neurocognitive-profiles-in-msud-school-age-patients
#6
Juliette Bouchereau, Julie Leduc-Leballeur, Samia Pichard, Apolline Imbard, Jean-François Benoist, Marie-Thérèse Abi Warde, Jean-Baptiste Arnoux, Valérie Barbier, Anaïs Brassier, Pierre Broué, Aline Cano, Brigitte Chabrol, Gilles Damon, Claire Gay, Isabelle Guillain, Florence Habarou, Delphine Lamireau, Chris Ottolenghi, Laetitia Paermentier, Frédérique Sabourdy, Guy Touati, Hélène Ogier de Baulny, Pascale de Lonlay, Manuel Schiff
Maple syrup urine disease (MSUD), an inborn error of amino acids catabolism is characterized by accumulation of branched chain amino acids (BCAAs) leucine, isoleucine, valine and their corresponding alpha-ketoacids. Impact on the cognitive development has been reported historically, with developmental delays of varying degree. Currently, earlier diagnosis and improved management allow a better neurodevelopment, without requirement of special education. However, specific impairments can be observed, and so far, results of detailed neurocognitive assessments are not available...
March 21, 2017: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/28323478/disability-items-from-the-current-population-survey-2008-2015-and-permanent-versus-temporary-disability-status
#7
Bryce Ward, Andrew Myers, Jennifer Wong, Craig Ravesloot
OBJECTIVES: To examine longitudinal responses to the disability indicator questions that have been adopted as the standard across national surveys sponsored by the US Department of Health and Human Services. METHODS: Data from the Current Population Survey between 2008 and 2015 were linked to create a longitudinal sample of 721 178 individual respondents. RESULTS: Responses to the disability questions fluctuated significantly. Although 17% of all respondents reported a disability at some point, only 3% consistently reported the same set of disabilities...
March 21, 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/28319551/a-contemporary-medicolegal-analysis-of-implanted-devices-for-chronic-pain-management
#8
Christopher R Abrecht, Penny Greenberg, Ellen Song, Richard D Urman, James P Rathmell
BACKGROUND: Analysis of closed malpractice claims allows the study of rare but serious complications and likely results in improved patient safety by raising awareness of such complications. Clinical studies and closed claims analyses have previously reported on the common complications associated with intrathecal drug delivery systems (IDDS) and spinal cord stimulators (SCS). This study provides a contemporary analysis of claims from within the past 10 years. METHODS: We performed a closed claims analysis for a period January 1, 2009 to December 31, 2013 for cases with pain medicine as the primary service...
April 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28318975/a-large-and-consistent-phylogenomic-dataset-supports-sponges-as-the-sister-group-to-all-other-animals
#9
Paul Simion, Hervé Philippe, Denis Baurain, Muriel Jager, Daniel J Richter, Arnaud Di Franco, Béatrice Roure, Nori Satoh, Éric Quéinnec, Alexander Ereskovsky, Pascal Lapébie, Erwan Corre, Frédéric Delsuc, Nicole King, Gert Wörheide, Michaël Manuel
Resolving the early diversification of animal lineages has proven difficult, even using genome-scale datasets. Several phylogenomic studies have supported the classical scenario in which sponges (Porifera) are the sister group to all other animals ("Porifera-sister" hypothesis), consistent with a single origin of the gut, nerve cells, and muscle cells in the stem lineage of eumetazoans (bilaterians + ctenophores + cnidarians). In contrast, several other studies have recovered an alternative topology in which ctenophores are the sister group to all other animals (including sponges)...
March 8, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28318101/individual-volume-based-3d-gamma-indices-for-pretreatment-vmat-qa
#10
Jinling Yi, Ce Han, Xiaomin Zheng, Yongqiang Zhou, Zhenxiang Deng, Congying Xie, Xiance Jin, Fu Jin
Although gamma analysis is still a widely accepted quantitative tool to analyze and report patient-specific QA for intensity-modulated radiotherapy (IMRT) and volumetric-modulated arc therapy (VMAT), the correlation between the 2D percentage gamma passing rate (%GP), and the clinical dosimetric difference for IMRT and VMAT has been questioned. The purpose of this study was to investigate the feasibility of individual volume-based 3D gamma indices for pretreatment VMAT QA. Percentage dosimetric errors (%DE) of dose-volume histogram metrics (includes target volumes and organ at risks) between the treatment planning system and QA-reconstructed dose distribution, %GPs for individual volume and global gamma indices, as well their correlations and sensitivities were investigated for one- and two-arc VMAT plans...
March 20, 2017: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28317938/on-the-determination-of-%C3%AF-2-in-thin-films-a-comparison-of-one-beam-second-harmonic-generation-measurement-methodologies
#11
Artur Hermans, Clemens Kieninger, Kalle Koskinen, Andreas Wickberg, Eduardo Solano, Jolien Dendooven, Martti Kauranen, Stéphane Clemmen, Martin Wegener, Christian Koos, Roel Baets
The determination of the second-order susceptibility (χ((2))) of thin film samples can be a delicate matter since well-established χ((2)) measurement methodologies such as the Maker fringe technique are best suited for nonlinear materials with large thicknesses typically ranging from tens of microns to several millimeters. Here we compare two different second-harmonic generation setups and the corresponding measurement methodologies that are especially advantageous for thin film χ((2)) characterization. This exercise allows for cross-checking the χ((2)) obtained for identical samples and identifying the main sources of error for the respective techniques...
March 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28317667/small-incision-lenticule-extraction-in-a-patient-with-congenital-nystagmus
#12
Bu Ki Kim, Su Joung Mun, Dae Gyu Lee, Hyun Tae Choi, Young Taek Chung
We report a case of a 23-year-old woman with congenital nystagmus who had small-incision lenticule extraction (SMILE) procedure to correct refractive errors. The manifest refraction was -5.50 -1.75 × 180 in the right eye, -5.0 -2.50 × 180 in the left eye, and the patient presented with horizontal pendular nystagmus with an amplitude range of 5 to 10 degrees. Uneventful simultaneous bilateral small-incision lenticule extraction was performed. Six months postoperatively, the uncorrected distance visual acuity was 20/18 with -0...
January 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28317115/increased-lung-weights-in-drug-related-fatalities
#13
Heather I-Hsuan Chen, Joyce deJong
This study is of autopsy data for potential validation as to whether increased weights of the lungs support toxic effects of drugs as the cause of death. This retrospective study compared data from 133 deaths resulting from the toxic effects of drugs with previously reported normal lung weights (Toxicol Mech Methods, 22, 2012, 159; Am J Forensic Med Pathol 33, 2012, 368). The lung weights and their standard errors were used in a two-sample independent t-test comparing the average drug-related death weight to the average control weights...
March 20, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28314065/construction-safety-risk-modeling-and-simulation
#14
Antoine J-P Tixier, Matthew R Hallowell, Balaji Rajagopalan
By building on a genetic-inspired attribute-based conceptual framework for safety risk analysis, we propose a novel approach to define, model, and simulate univariate and bivariate construction safety risk at the situational level. Our fully data-driven techniques provide construction practitioners and academicians with an easy and automated way of getting valuable empirical insights from attribute-based data extracted from unstructured textual injury reports. By applying our methodology on a data set of 814 injury reports, we first show the frequency-magnitude distribution of construction safety risk to be very similar to that of many natural phenomena such as precipitation or earthquakes...
March 17, 2017: Risk Analysis: An Official Publication of the Society for Risk Analysis
https://www.readbyqxmd.com/read/28306754/factors-influencing-consonant-acquisition-in-brazilian-portuguese-speaking-children
#15
Marizete Ilha Ceron, Marileda Barichello Gubiani, Camila Rosa de Oliveira, Márcia Keske-Soares
Purpose: We sought to provide valid and reliable data on the acquisition of consonant sounds in speakers of Brazilian Portuguese. Method: The sample comprised 733 typically developing monolingual speakers of Brazilian Portuguese (ages 3;0-8;11 [years;months]). The presence of surface speech error patterns, the revised percentage consonants correct, and the age of sound acquisition were evaluated using phonological assessment software. The normative values for these variables were reported using means and standard deviations...
March 17, 2017: Journal of Speech, Language, and Hearing Research: JSLHR
https://www.readbyqxmd.com/read/28306552/precise-determination-of-the-heat-delivery-during-in-vivo-magnetic-nanoparticle-hyperthermia-with-infrared-thermography
#16
Harley Rodrigues, Gustavo Capistrano, Francyelli Mello, Nicholas Zufelato, Elisangela Silveira-Lacerda, Andris F Bakuzis
Monitoring noninvasively and in real-time the heat delivery during magnetic nanoparticle hyperthermia is of fundamental importance to predict clinical outcome for cancer treatment. Infrared thermography (IRT) can inform the surface temperature due to three-dimensional heat delivery inside a subcutaneous tumor, an argument that is supported by numerical simulations. However, for precise temperature determination, it is of crucial relevance to use a correct experimental configuration. This work reports a magnetic nanoparticle hyperthermia study (MNH) using a sarcoma 180 murine tumor containing 3...
March 17, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28306525/efficient-reporting-of-the-estimated-glomerular-filtration-rate-without-height-in-pediatric-patients-with-cancer
#17
Tae-Dong Jeong, Eun-Jung Cho, Woochang Lee, Sail Chun, Ki-Sook Hong, Won-Ki Min
BACKGROUND: The updated bedside Schwartz equation requires constant, serum creatinine concentration and height measurements to calculate the estimated glomerular filtration rate (eGFR) in pediatric patients. Unlike the serum creatinine levels, obtaining height information from the laboratory information system (LIS) is not always possible in a clinical laboratory. Recently, the height-independent eGFR equation, the full age spectrum (FAS) equation, has been introduced. We evaluated the performance of height-independent eGFR equation in Korean children with cancer...
March 15, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28306266/precise-measurement-of-the-e-e-%C3%A2-%C3%AF-%C3%AF-j-%C3%AF-cross-section-at-center-of-mass-energies-from-3-77-to-4-60%C3%A2-gev
#18
M Ablikim, M N Achasov, S Ahmed, X C Ai, O Albayrak, M Albrecht, D J Ambrose, A Amoroso, F F An, Q An, J Z Bai, O Bakina, R Baldini Ferroli, Y Ban, D W Bennett, J V Bennett, N Berger, M Bertani, D Bettoni, J M Bian, F Bianchi, E Boger, I Boyko, R A Briere, H Cai, X Cai, O Cakir, A Calcaterra, G F Cao, S A Cetin, J Chai, J F Chang, G Chelkov, G Chen, H S Chen, J C Chen, M L Chen, S Chen, S J Chen, X Chen, X R Chen, Y B Chen, X K Chu, G Cibinetto, H L Dai, J P Dai, A Dbeyssi, D Dedovich, Z Y Deng, A Denig, I Denysenko, M Destefanis, F De Mori, Y Ding, C Dong, J Dong, L Y Dong, M Y Dong, Z L Dou, S X Du, P F Duan, J Z Fan, J Fang, S S Fang, X Fang, Y Fang, R Farinelli, L Fava, F Feldbauer, G Felici, C Q Feng, E Fioravanti, M Fritsch, C D Fu, Q Gao, X L Gao, Y Gao, Z Gao, I Garzia, K Goetzen, L Gong, W X Gong, W Gradl, M Greco, M H Gu, Y T Gu, Y H Guan, A Q Guo, L B Guo, R P Guo, Y Guo, Y P Guo, Z Haddadi, A Hafner, S Han, X Q Hao, F A Harris, K L He, F H Heinsius, T Held, Y K Heng, T Holtmann, Z L Hou, C Hu, H M Hu, J F Hu, T Hu, Y Hu, G S Huang, J S Huang, X T Huang, X Z Huang, Z L Huang, T Hussain, W Ikegami Andersson, Q Ji, Q P Ji, X B Ji, X L Ji, L W Jiang, X S Jiang, X Y Jiang, J B Jiao, Z Jiao, D P Jin, S Jin, T Johansson, A Julin, N Kalantar-Nayestanaki, X L Kang, X S Kang, M Kavatsyuk, B C Ke, P Kiese, R Kliemt, B Kloss, O B Kolcu, B Kopf, M Kornicer, A Kupsc, W Kühn, J S Lange, M Lara, P Larin, L Lavezzi, H Leithoff, C Leng, C Li, Cheng Li, D M Li, F Li, F Y Li, G Li, H B Li, H J Li, J C Li, Jin Li, K Li, K Li, Lei Li, P R Li, Q Y Li, T Li, W D Li, W G Li, X L Li, X N Li, X Q Li, Y B Li, Z B Li, H Liang, Y F Liang, Y T Liang, G R Liao, D X Lin, B Liu, B J Liu, C X Liu, D Liu, F H Liu, Fang Liu, Feng Liu, H B Liu, H H Liu, H H Liu, H M Liu, J Liu, J B Liu, J P Liu, J Y Liu, K Liu, K Y Liu, L D Liu, P L Liu, Q Liu, S B Liu, X Liu, Y B Liu, Y Y Liu, Z A Liu, Zhiqing Liu, H Loehner, X C Lou, H J Lu, J G Lu, Y Lu, Y P Lu, C L Luo, M X Luo, T Luo, X L Luo, X R Lyu, F C Ma, H L Ma, L L Ma, M M Ma, Q M Ma, T Ma, X N Ma, X Y Ma, Y M Ma, F E Maas, M Maggiora, Q A Malik, Y J Mao, Z P Mao, S Marcello, J G Messchendorp, G Mezzadri, J Min, T J Min, R E Mitchell, X H Mo, Y J Mo, C Morales Morales, N Yu Muchnoi, H Muramatsu, P Musiol, Y Nefedov, F Nerling, I B Nikolaev, Z Ning, S Nisar, S L Niu, X Y Niu, S L Olsen, Q Ouyang, S Pacetti, Y Pan, P Patteri, M Pelizaeus, H P Peng, K Peters, J Pettersson, J L Ping, R G Ping, R Poling, V Prasad, H R Qi, M Qi, S Qian, C F Qiao, L Q Qin, N Qin, X S Qin, Z H Qin, J F Qiu, K H Rashid, C F Redmer, M Ripka, G Rong, Ch Rosner, X D Ruan, A Sarantsev, M Savrié, C Schnier, K Schoenning, W Shan, M Shao, C P Shen, P X Shen, X Y Shen, H Y Sheng, W M Song, X Y Song, S Sosio, S Spataro, G X Sun, J F Sun, S S Sun, X H Sun, Y J Sun, Y Z Sun, Z J Sun, Z T Sun, C J Tang, X Tang, I Tapan, E H Thorndike, M Tiemens, I Uman, G S Varner, B Wang, B L Wang, D Wang, D Y Wang, K Wang, L L Wang, L S Wang, M Wang, P Wang, P L Wang, W Wang, W P Wang, X F Wang, Y Wang, Y D Wang, Y F Wang, Y Q Wang, Z Wang, Z G Wang, Z H Wang, Z Y Wang, Z Y Wang, T Weber, D H Wei, P Weidenkaff, S P Wen, U Wiedner, M Wolke, L H Wu, L J Wu, Z Wu, L Xia, L G Xia, Y Xia, D Xiao, H Xiao, Z J Xiao, Y G Xie, Yuehong Xie, Q L Xiu, G F Xu, J J Xu, L Xu, Q J Xu, Q N Xu, X P Xu, L Yan, W B Yan, W C Yan, Y H Yan, H J Yang, H X Yang, L Yang, Y X Yang, M Ye, M H Ye, J H Yin, Z Y You, B X Yu, C X Yu, J S Yu, C Z Yuan, Y Yuan, A Yuncu, A A Zafar, Y Zeng, Z Zeng, B X Zhang, B Y Zhang, C C Zhang, D H Zhang, H H Zhang, H Y Zhang, J Zhang, J J Zhang, J L Zhang, J Q Zhang, J W Zhang, J Y Zhang, J Z Zhang, K Zhang, L Zhang, S Q Zhang, X Y Zhang, Y Zhang, Y Zhang, Y H Zhang, Y N Zhang, Y T Zhang, Yu Zhang, Z H Zhang, Z P Zhang, Z Y Zhang, G Zhao, J W Zhao, J Y Zhao, J Z Zhao, Lei Zhao, Ling Zhao, M G Zhao, Q Zhao, Q W Zhao, S J Zhao, T C Zhao, Y B Zhao, Z G Zhao, A Zhemchugov, B Zheng, J P Zheng, W J Zheng, Y H Zheng, B Zhong, L Zhou, X Zhou, X K Zhou, X R Zhou, X Y Zhou, K Zhu, K J Zhu, S Zhu, S H Zhu, X L Zhu, Y C Zhu, Y S Zhu, Z A Zhu, J Zhuang, L Zotti, B S Zou, J H Zou
The cross section for the process e^{+}e^{-}→π^{+}π^{-}J/ψ is measured precisely at center-of-mass energies from 3.77 to 4.60 GeV using 9  fb^{-1} of data collected with the BESIII detector operating at the BEPCII storage ring. Two resonant structures are observed in a fit to the cross section. The first resonance has a mass of (4222.0±3.1±1.4)  MeV/c^{2} and a width of (44.1±4.3±2.0)  MeV, while the second one has a mass of (4320.0±10.4±7.0)  MeV/c^{2} and a width of (101.4_{-19...
March 3, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28304074/relative-frequency-and-estimated-minimal-frequency-of-lysosomal-storage-diseases-in-brazil-report-from-a-reference-laboratory
#19
Roberto Giugliani, Andressa Federhen, Kristiane Michelin-Tirelli, Mariluce Riegel, Maira Burin
Lysosomal storage diseases (LSDs) comprise a heterogeneous group of more than 50 genetic conditions of inborn errors of metabolism (IEM) caused by a defect in lysosomal function. Although there are screening tests for some of these conditions, diagnosis usually depends on specific enzyme assays, which are only available in a few laboratories around the world. A pioneer facility for the diagnosis of IEM and LSDs was established in the South of Brazil in 1982 and has served as a reference service since then. Over the past 34 years, samples from 72,797 patients were referred for investigation of IEM, and 3,211 were confirmed as having an LSD (4...
March 16, 2017: Genetics and Molecular Biology
https://www.readbyqxmd.com/read/28303327/rotational-error-in-path-integration-encoding-and-execution-errors-in-angle-reproduction
#20
Elizabeth R Chrastil, William H Warren
Path integration is fundamental to human navigation. When a navigator leaves home on a complex outbound path, they are able to keep track of their approximate position and orientation and return to their starting location on a direct homebound path. However, there are several sources of error during path integration. Previous research has focused almost exclusively on encoding error-the error in registering the outbound path in memory. Here, we also consider execution error-the error in the response, such as turning and walking a homebound trajectory...
March 16, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
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