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https://www.readbyqxmd.com/read/28110244/quantification-of-postural-control-deficits-in-patients-with-recent-concussion-an-inertial-sensor-based-approach
#1
Cailbhe Doherty, Liang Zhao, John Ryan, Yusuke Komaba, Akihiro Inomata, Brian Caulfield
BACKGROUND: The aim of this study was to quantify postural control ability in a group with concussion compared with a healthy control group. METHOD: Fifteen concussion patients (4 females, 11 males) and a group of fifteen age- and sex-matched controls were recruited. Participants were tested during the performance of the three stance variants (bilateral, tandem and unilateral) of the balance error scoring system standing on a force place, while wearing an inertial measurement unit placed at the posterior aspect of the sacrum...
January 16, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28110179/analysis-the-effect-of-different-geometries-of-afm-s-cantilever-on-the-dynamic-behavior-and-the-critical-forces-of-three-dimensional-manipulation
#2
Moharam Habibnejad Korayem, Maniya B Saraie, Mahdieh B Saraee
An important challenge when using an atomic force microscope (AFM) is to be able to control the force exerted by the AFM for performing various tasks. Nevertheless, the exerted force is proportional to the deflection of the AFM cantilever, which itself is affected by a cantilever's stiffness coefficient. Many papers have been published so far on the methods of obtaining the stiffness coefficients of AFM cantilevers in 2D; however, a comprehensive model is yet to be presented on 3D cantilever motion. The discrepancies between the equations of the 2D and 3D analysis are due to the number and direction of forces and moments that are applied to a cantilever...
January 13, 2017: Ultramicroscopy
https://www.readbyqxmd.com/read/28109895/pilot-study-of-the-mirabilis-system-prototype-for-rapid-noninvasive-uterine-fibroid-treatment-using-an-ultrasound-guided-volumetric-shell-ablation-technique
#3
Jessica E Parsons, Michael P H Lau, Patrick J Martin, Joel J Islas Lagos, Juan M Aguilar Aguirre, José G Garza Leal
STUDY OBJECTIVE: The primary objective of this pilot study was to evaluate the safety and acute tissue ablation efficacy of a transabdominal high-intensity focused ultrasound (HIFU) prototype device that uses ultrasound imaging guidance for rapid noninvasive ablation of uterine fibroids. The secondary objective was to assess preliminary fibroid-related symptom improvement and fibroid volume reduction at 3 - 6 months post-treatment in subsets of patients. DESIGN: Multi-center prospective single-arm pilot study (Canadian Task Force Classification II-2) SETTING: University-affiliated teaching hospital and private community hospital PATIENTS: Women with a diagnosis of symptomatic uterine fibroids planning to undergo hysterectomy INTERVENTIONS: Seventy-three (73) women underwent transabdominal ultrasound-guided HIFU treatment using a volumetric ablation technique referred to as 'shell ablation,' in which the HIFU energy is deposited in patterns that partially encapsulate the peripheral region of the targeted fibroid(s)...
January 18, 2017: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/28109777/physiological-tremor-8-12hz-component-in-isometric-force-control
#4
Thomas Novak, Karl M Newell
The experiment investigated the influence of physiological tremor (8-12Hz band) on the variability of isometric force control as a function of force level and hand dominance. Subjects were instructed to match a constant force level target line on a computer screen and minimize error in a uni-manual isometric finger abduction task at 5%, 25%, 45%, 65%, and 85% of their maximal voluntary contraction (MVC). The experimental protocol was performed independently with the left and right hands in separate blocks of performance...
January 18, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28108648/reduced-firing-rates-of-high-threshold-motor-units-in-response-to-eccentric-overload
#5
Tom G Balshaw, Madhu Pahar, Ross Chesham, Lewis J Macgregor, Angus M Hunter
Acute responses of motor units were investigated during submaximal voluntary isometric tasks following eccentric overload (EO) and constant load (CL) knee extension resistance exercise. Ten healthy resistance-trained participants performed four experimental test sessions separated by 5 days over a 20 day period. Two sessions involved constant load and the other two used eccentric overload. EO and CL used both sessions for different target knee eccentric extension phases; one at 2 sec and the other at 4 sec...
January 2017: Physiological Reports
https://www.readbyqxmd.com/read/28107822/does-training-improve-diagnostic-accuracy-and-inter-rater-agreement-in-applying-the-berlin-radiographic-definition-of-acute-respiratory-distress-syndrome-a-multicenter-prospective-study
#6
Jin-Min Peng, Chuan-Yun Qian, Xiang-You Yu, Ming-Yan Zhao, Shu-Sheng Li, Xiao-Chun Ma, Yan Kang, Fa-Chun Zhou, Zhen-Yang He, Tie-He Qin, Yong-Jie Yin, Li Jiang, Zhen-Jie Hu, Ren-Hua Sun, Jian-Dong Lin, Tong Li, Da-Wei Wu, You-Zhong An, Yu-Hang Ai, Li-Hua Zhou, Xiang-Yuan Cao, Xi-Jing Zhang, Rong-Qing Sun, Er-Zhen Chen, Bin Du
BACKGROUND: Poor inter-rater reliability in chest radiograph interpretation has been reported in the context of acute respiratory distress syndrome (ARDS), although not for the Berlin definition of ARDS. We sought to examine the effect of training material on the accuracy and consistency of intensivists' chest radiograph interpretations for ARDS diagnosis. METHODS: We conducted a rater agreement study in which 286 intensivists (residents 41.3%, junior attending physicians 35...
January 20, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/28107349/using-breast-cancer-risk-associated-polymorphisms-to-identify-women-for-breast-cancer-chemoprevention
#7
Elad Ziv, Jeffrey A Tice, Brian Sprague, Celine M Vachon, Steven R Cummings, Karla Kerlikowske
BACKGROUND: Breast cancer can be prevented with selective estrogen receptor modifiers (SERMs) and aromatase inhibitors (AIs). The US Preventive Services Task Force recommends that women with a 5-year breast cancer risk ≥3% consider chemoprevention for breast cancer. More than 70 single nucleotide polymorphisms (SNPs) have been associated with breast cancer. We sought to determine how to best integrate risk information from SNPs with other risk factors to risk stratify women for chemoprevention...
2017: PloS One
https://www.readbyqxmd.com/read/28105948/active-lower-limb-prosthetics-a-systematic-review-of-design-issues-and-solutions
#8
REVIEW
Michael Windrich, Martin Grimmer, Oliver Christ, Stephan Rinderknecht, Philipp Beckerle
This paper presents a review on design issues and solutions found in active lower limb prostheses. This review is based on a systematic literature search with a methodical search strategy. The search was carried out across four major technical databases and the retrieved records were screened for their relevance. A total of 21 different active prostheses, including 8 above-knee, 9 below-knee and 4 combined knee-ankle prostheses were identified. While an active prosthesis may help to restore the functional performance of an amputee, the requirements regarding the actuation unit as well as for the control system are high and the development becomes a challenging task...
December 19, 2016: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28104498/laparoscopic-myomectomy-a-single-centre-retrospective-review-of-514-patients
#9
Elisabeth Mary Ruth Bean, Alfred Cutner, Tom Holland, Arvind Vashisht, Davor Jurkovic, Ertan Saridogan
STUDY OBJECTIVE: To review surgical outcomes and histopathological findings following laparoscopic myomectomy by a team at a university teaching hospital. DESIGN: This was a retrospective review of consecutive cases of laparoscopic myomectomy carried out by members of our minimal access surgery team between January 2004 and December 2015. DESIGN CLASSIFICATION: Canadian Task Force Classification II-3 SETTING: University Teaching Hospital PATIENTS: Women undergoing laparoscopic myomectomy INTERVENTIONS: Laparoscopic myomectomy MEASUREMENTS AND MAIN RESULTS: We collected women's demographic data, clinical histories and surgical outcomes, including complication rates and the incidence of undiagnosed uterine malignancy...
January 16, 2017: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/28104496/risk-factors-clinical-presentation-and-outcomes-for-abdominal-wall-endometriosis
#10
Zaraq Khan, Valentina Zanfagnin, Sherif A El-Nashar, Bimbola O Famuyide, Gaurang S Daftary, Matthew R Hopkins
STUDY OBJECTIVE: To evaluate risk factors, presentation and outcomes in cases of abdominal wall endometriosis. DESIGN: This is a case control study. DESIGN CLASSIFICATION: Canadian Task Force classification II-2 SETTING: Academic medical center PATIENTS: Total of 102 (34 cases and 68 controls) were included. INTERVENTION(S): Surgical resection of abdominal wall endometriosis. MAIN OUTCOME MEASURE(S): Cases underwent surgical excision for abdominal wall endometriosis at Mayo Clinic from January 1, 2000 through December 31, 2013...
January 16, 2017: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/28103267/retro-active-emotion-do-negative-emotional-stimuli-disrupt-consolidation-in-working-memory
#11
Güven Kandemir, Elkan G Akyürek, Mark R Nieuwenstein
While many studies have shown that a task-irrelevant emotionally arousing stimulus can interfere with the processing of a shortly following target, it remains unclear whether an emotional stimulus can also retro-actively interrupt the ongoing processing of an earlier target. In two experiments, we examined whether the presentation of a negative emotionally arousing picture can disrupt working memory consolidation of a preceding visual target. In both experiments, the effects of negative emotional pictures were compared with the effects of neutral pictures...
2017: PloS One
https://www.readbyqxmd.com/read/28103189/dynamic-programming-for-instance-annotation-in-multi-instance-multi-label-learning
#12
Anh Pham, Raviv Raich, Xiaoli Fern
Labeling data for classification requires significant human effort. To reduce labeling cost, instead of labeling every instance, a group of instances (bag) is labeled by a single bag label. Computer algorithms are then used to infer the label for each instance in a bag, a process referred to as instance annotation. This task is challenging due to the ambiguity regarding the instance labels. We propose a discriminative probabilistic model for the instance annotation problem and introduce an expectation maximization framework for inference, based on the maximum likelihood approach...
January 5, 2017: IEEE Transactions on Pattern Analysis and Machine Intelligence
https://www.readbyqxmd.com/read/28102859/diagnostic-accuracy-of-methylated-sept9-for-blood-based-colorectal-cancer-detection-a-systematic-review-and-meta-analysis
#13
Jiayun Nian, Xu Sun, SuYang Ming, Chen Yan, Yunfei Ma, Ying Feng, Lin Yang, Mingwei Yu, Ganlin Zhang, Xiaomin Wang
OBJECTIVES: More convenient and effective blood-based methods are believed to increase colorectal cancer (CRC) detection adoption. The effectiveness of methylated SPET9 for CRC detection has been reviewed in the newly published recommendation statement by US Preventive Services Task Force (USPSTF), while detailed instructions were not provided, which may be a result of insufficient evidence. Therefore, more evidence is needed to assist practitioners to thoroughly understand the utilization of this special maker...
January 19, 2017: Clinical and Translational Gastroenterology
https://www.readbyqxmd.com/read/28101732/the-analysis-of-knee-joint-loading-during-drop-landing-from-different-heights-and-under-different-instruction-sets-in-healthy-males
#14
Dmitry Verniba, Jason D Vescovi, David A Hood, William H Gage
BACKGROUND: Mechanical loading during exercise has been shown to promote tissue remodeling. Safe and accessible exercise may be beneficial to populations at risk of diminished bone and joint health. We examined the effect of drop height and instruction on knee loading during a drop-landing task and proposed a task that makes use of drop heights that may be appropriate for rehabilitation purposes and functional in daily life to examine transient knee joint loads. METHODS: Twenty males (22...
December 2017: Sports Medicine—Open
https://www.readbyqxmd.com/read/28099872/assessment-of-gait-and-sensorimotor-deficits-in-the-d1ct-7-mouse-model-of-tourette-syndrome
#15
Stephen C Fowler, Laura J Mosher, Sean C Godar, Marco Bortolato
Tourette syndrome (TS) is a neurodevelopmental disorder characterized by multiple motor and phonic tics. While TS patients have been also shown to exhibit subtle abnormalities of sensorimotor integration and gait, animal models of this disorder are seldom tested for these functions. To fill this gap, we assessed gait and sensorimotor integration in the D1CT-7 mouse, one of the best-validated animal models of TS. D1CT-7 mice exhibit spontaneous tic-like manifestations, which, in line with the clinical phenomenology of TS, are markedly exacerbated by environmental stress...
January 15, 2017: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/28099454/high-cable-forces-deteriorate-pinch-force-control-in-voluntary-closing-body-powered-prostheses
#16
Mona Hichert, David A Abbink, Peter J Kyberd, Dick H Plettenburg
BACKGROUND: It is generally asserted that reliable and intuitive control of upper-limb prostheses requires adequate feedback of prosthetic finger positions and pinch forces applied to objects. Body-powered prostheses (BPPs) provide the user with direct proprioceptive feedback. Currently available BPPs often require high cable operation forces, which complicates control of the forces at the terminal device. The aim of this study is to quantify the influence of high cable forces on object manipulation with voluntary-closing prostheses...
2017: PloS One
https://www.readbyqxmd.com/read/28099313/what-makes-a-competent-orthopaedist-commentary-on-an-article-by-james-f-kellam-md-on-behalf-of-the-general-orthopaedic-competency-task-force-the-core-competencies-for-general-orthopaedic-surgeons
#17
https://www.readbyqxmd.com/read/28099309/the-core-competencies-for-general-orthopaedic-surgeons
#18
James F Kellam, Douglas Archibald, James W Barber, Eugene P Christian, Richard J D'Ascoli, Richard J Haynes, Suzanne S Hecht, Shepard R Hurwitz, James F Kellam, Alexander C McLaren, Terrance D Peabody, Stephen R Southworth, Robert W Strauss, Veronica M R Wadey
BACKGROUND: With the changing delivery of orthopaedic surgical care, there is a need to define the knowledge and competencies that are expected of an orthopaedist providing general and/or acute orthopaedic care. This article provides a proposal for the knowledge and competencies needed for an orthopaedist to practice general and/or acute care orthopaedic surgery. METHODS: Using the modified Delphi method, the General Orthopaedic Competency Task Force consisting of stakeholders associated with general orthopaedic practice has proposed the core knowledge and competencies that should be maintained by orthopaedists who practice emergency and general orthopaedic surgery...
January 18, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28097362/folic-acid-supplementation-for-the-prevention-of-neural-tube-defects-us-preventive-services-task-force-recommendation-statement
#19
Kirsten Bibbins-Domingo, David C Grossman, Susan J Curry, Karina W Davidson, John W Epling, Francisco A R García, Alex R Kemper, Alex H Krist, Ann E Kurth, C Seth Landefeld, Carol M Mangione, William R Phillips, Maureen G Phipps, Michael P Pignone, Michael Silverstein, Chien-Wen Tseng
Importance: Neural tube defects are among the most common major congenital anomalies in the United States and may lead to a range of disabilities or death. Daily folic acid supplementation in the periconceptional period can prevent neural tube defects. However, most women do not receive the recommended daily intake of folate from diet alone. Objective: To update the 2009 US Preventive Services Task Force (USPSTF) recommendation on folic acid supplementation in women of childbearing age...
January 10, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28097361/folic-acid-supplementation-for-the-prevention-of-neural-tube-defects-an-updated-evidence-report-and-systematic-review-for-the-us-preventive-services-task-force
#20
Meera Viswanathan, Katherine A Treiman, Julia Kish-Doto, Jennifer C Middleton, Emmanuel J L Coker-Schwimmer, Wanda K Nicholson
Importance: Neural tube defects are among the most common congenital anomalies in the United States. Periconceptional folic acid supplementation is a primary care-relevant preventive intervention. Objective: To review the evidence on folic acid supplementation for preventing neural tube defects to inform the US Preventive Services Task Force for an updated Recommendation Statement. Data Sources: MEDLINE, Cochrane Library, EMBASE, and trial registries through January 28, 2016, with ongoing surveillance through November 11, 2016; references; experts...
January 10, 2017: JAMA: the Journal of the American Medical Association
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