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https://www.readbyqxmd.com/read/28918649/characterizing-verified-head-impacts-in-high-school-girls-lacrosse
#1
Shane V Caswell, Andrew E Lincoln, Hannah Stone, Patricia Kelshaw, Margot Putukian, Lisa Hepburn, Michael Higgins, Nelson Cortes
BACKGROUND: Girls' high school lacrosse players have higher rates of head and facial injuries than boys. Research indicates that these injuries are caused by stick, player, and ball contacts. Yet, no studies have characterized head impacts in girls' high school lacrosse. PURPOSE: To characterize girls' high school lacrosse game-related impacts by frequency, magnitude, mechanism, player position, and game situation. STUDY DESIGN: Descriptive epidemiology study...
September 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28913512/the-distribution-of-negative-and-positive-relative-accommodation-and-their-relationship-with-binocular-and-refractive-indices-in-a-young-population
#2
AbbasAli Yekta, Hassan Hashemi, Mehdi Khabazkhoob, Hadi Ostadimoghaddam, Somayeh Ghasemi-Moghaddam, Ebrahim Jafarzadehpur, Fereshteh Shokrollahzadeh
PURPOSE: To determine the distribution of negative relative accommodation (NRA) and positive relative accommodation (PRA) and its relationship with binocular vision indices in a young population. METHODS: In this cross-sectional study conducted in a student population, samples were selected through multistage cluster sampling. All the samples underwent the measurement of uncorrected and corrected visual acuity and refraction. Then far and near cover tests were performed...
September 2017: Journal of Current Ophthalmology
https://www.readbyqxmd.com/read/28912005/proximal-radial-artery-arteriovenous-fistula-for-hemodialysis-vascular-access
#3
William C Jennings, Alexandros Mallios, Nasir Mushtaq
OBJECTIVE: This study reviewed our experience with proximal radial artery-based arteriovenous fistulas (PRA-AVFs) for hemodialysis vascular access, evaluating characteristics of the patients, functional patency, risk of steal syndrome, survival of the patient, and technical considerations. METHODS: We retrospectively analyzed our database of consecutive patients, identifying those individuals with a PRA-AVF created during a 12-year period. In addition to physical examination, all patients underwent ultrasound vessel mapping by the operating surgeon, identifying the PRA-AVF configuration and outflow target most likely to succeed...
September 11, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28900565/comparison-of-a-head-mounted-impact-measurement-device-to-the-hybrid-iii-anthropomorphic-testing-device-in-a-controlled-laboratory-setting
#4
Eric Schussler, David Stark, John H Bolte, Yun Seok Kang, James A Onate
BACKGROUND: Reports estimate that 1.6 to 3.8 million cases of concussion occur in sports and recreation each year in the United States. Despite continued efforts to reduce the occurrence of concussion, the rate of diagnosis continues to increase. The mechanisms of concussion are thought to involve linear and rotational head accelerations and velocities. One method of quantifying the kinematics experienced during sport participation is to place measurement devices into the athlete's helmet or directly on the athlete's head...
August 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28890456/a-figure-of-merit-quantifying-the-probability-of-a-nuclear-reactor-accident
#5
Thomas R Wellock
In recent decades, probabilistic risk assessment (PRA) has become an essential tool in risk analysis and management in many industries and government agencies. The origins of PRA date to the 1975 publication of the U.S. Nuclear Regulatory Commission's (NRC) Reactor Safety Study led by MIT professor Norman Rasmussen. The "Rasmussen Report" inspired considerable political and scholarly disputes over the motives behind it and the value of its methods and numerical estimates of risk. The Report's controversies have overshadowed the deeper technical origins of risk assessment...
2017: Technology and Culture
https://www.readbyqxmd.com/read/28887983/effect-of-pores-formation-process-and-oxygen-plasma-treatment-to-hydroxyapatite-formation-on-bioactive-peek-prepared-by-incorporation-of-precursor-of-apatite
#6
Takeshi Yabutsuka, Keito Fukushima, Tomoko Hiruta, Shigeomi Takai, Takeshi Yao
When bioinert substrates with fine-sized pores are immersed in a simulated body fluid (SBF) and the pH value or the temperature is increased, fine particles of calcium phosphate, which the authors denoted as 'precursor of apatite' (PrA), are formed in the pores. By this method, hydroxyapatite formation ability can be provided to various kinds of bioinert materials. In this study, the authors studied fabrication methods of bioactive PEEK by using the above-mentioned process. First, the fine-sized pores were formed on the surface of the PEEK substrate by H2SO4 treatment...
December 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28878203/biventricular-cardiac-hypertrophy-in-a-patient-with-primary-aldosteronism-and-atrial-septal-defect
#7
Tjokorda Gde Dalem Pemayun, Ridho M Naibaho, Muhammad Achmad Sungkar
BACKGROUND Primary aldosteronism can be caused by adrenocortical adenoma and is usually associated with left ventricular hypertrophy. Biventricular cardiac hypertrophy and heart failure in the presence of a pre-existing atrial septal defect (ASD) are a rare association of primary aldosteronism. CASE REPORT A 33-year-old woman with resistant hypertension and refractory hypokalemia presented with signs and symptoms of heart failure. She had previously been diagnosed having a right adrenal tumor and ostium secundum type ASD...
September 7, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28875746/plasma-renin-activity-in-patients-with-heart-failure-and-reduced-ejection-fraction-on-optimal-medical-therapy
#8
Petra Nijst, Frederik H Verbrugge, Pieter Martens, Philippe B Bertrand, Matthias Dupont, Gary S Francis, Wh Wilson Tang, Wilfried Mullens
BACKGROUND: Renin-angiotensin-aldosterone system (RAAS) activation in heart failure with reduced ejection fraction (HFREF) is detrimental through promotion of ventricular remodeling and salt and water retention. AIMS: The aims of this article are to describe RAAS activity in distinct HFREF populations and to assess its prognostic impact. METHODS: Venous blood samples were prospectively obtained in 76 healthy volunteers, 72 patients hospitalized for acute decompensated HFREF, and 78 ambulatory chronic HFREF patients without clinical signs of congestion...
July 2017: Journal of the Renin-angiotensin-aldosterone System: JRAAS
https://www.readbyqxmd.com/read/28872358/nocturnal-diastolic-blood-pressure-decline-is-associated-with-higher-25-hydroxyvitamin-d-level-and-standing-plasma-renin-activity-in-a-hypertensive-population
#9
Mingchen Zhang, Xinjuan Xu, Haiming Liu, Haixia Li, Junshi Zhang, Min Gao
Patients with nondipper hypertension are known to carry a high risk of cardiovascular complications. Vitamin D deficiency is associated with hypertension. Because vitamin D deficiency activates the renin-angiotensin-aldosterone system (RAAS), we hypothesized that this vitamin would interact with the RAAS to influence blood pressure (BP) in nondipper hypertensive patients. We performed a cross-sectional analysis of 1,007 outpatients with hypertension (HTN). Dipper and nondipper patterns were detected, and the two groups were matched for clinical, laboratory, 25-hydroxyvitamin D (25OHD) levels, and ambulatory blood pressure recording...
September 5, 2017: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/28867309/b-cell-activating-factor-baff-reflects-patients-immunological-risk-profile-after-kidney-transplantation
#10
A Schuster, B Jung, J Hofbauer, L Kühne, D Zecher, B Banas, T Bergler
The B-cell activating factor BAFF plays an important role in the development and maturation of B-lymphocytes, which can contribute to the generation of donor-specific antibodies and thus may influence graft function and graft survival. Inconsistent data on the role of BAFF levels after renal transplantation for the formation of donor-specific antibodies and the contribution for allograft rejection exist. The aim of the current study was to determine to what extent the degree of pre-immunization is reflected by each patient's BAFF levels before transplantation and in the follow-up...
August 31, 2017: Transplant Immunology
https://www.readbyqxmd.com/read/28855835/distribution-of-non-tuberculosis-mycobacteria-strains-from-suspected-tuberculosis-patients-by-heat-shock-protein-65-pcr-rflp
#11
Ali Nour-Neamatollahie, Nayereh Ebrahimzadeh, Seyed Davar Siadat, Farzam Vaziri, Mona Eslami, Abbas Akhavan Sepahi, Sharareh Khanipour, Morteza Masoumi, Fatemeh Sakhaee, Morteza Ghazanfari Jajin, Ahmadreza Bahrmand, Abolfazl Fateh
The genus Mycobacterium contains more than 150 species. Non-tuberculosis mycobacteria (NTM) often cause extrapulmonary and pulmonary disease. Mycobacteria detection at species level is necessary and provides useful information on epidemiology and facilitates successful treatment of patients. This retrospective study aimed to determine the incidence of the NTM isolates and Mycobacterium tuberculosis (Mtb) in clinical specimens collected from Iranian patients during February 2011-December 2013, by PCR-restriction fragment length polymorphism analysis (PRA) of the hsp65 gene...
September 2017: Saudi Journal of Biological Sciences
https://www.readbyqxmd.com/read/28838458/successful-simultaneous-pancreas-kidney-re-transplantation-in-a-highly-human-leukocyte-antigen-sensitized-patient
#12
S Kykalos, A Wunsch, T Klein, R Viebahn, P Schenker
BACKGROUND: The waiting time for re-transplantation for sensitized patients is greatly prolonged, given the lack of transplants that are available for this group and additional immunologic barriers. We report the case of a successful re-transplantation in a patient with very high levels of panel reactive antibodies ([PRA] >85%). METHODS: A 45-year-old woman had repetitive rejections after simultaneous pancreas-kidney transplantation, with consequent loss of function of both transplanted organs...
September 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28828397/assessment-of-useful-plants-in-the-catchment-area-of-the-proposed-ntabelanga-dam-in-the-eastern-cape-province-south-africa
#13
Alfred Maroyi
BACKGROUND: The developmental projects, particularly construction of dams, result in permanent changes of terrestrial ecosystems through inundation. OBJECTIVE: The present study was undertaken aiming at documenting useful plant species in Ntabelanga dam catchment area that will be impacted by the construction of the proposed dam. METHODS: A total of 55 randomly selected quadrats were used to assess plant species diversity and composition. Participatory rural appraisal (PRA) methods were used to identify useful plant species growing in the catchment area through interviews with 108 randomly selected participants...
2017: TheScientificWorldJournal
https://www.readbyqxmd.com/read/28828006/how-intraday-index-changes-influence-periodontal-assessment-a-preliminary-study
#14
Carlo Bertoldi, Andrea Forabosco, Michele Lalla, Luigi Generali, Davide Zaffe, Pierpaolo Cortellini
It is reputed that periodontal indices remain unchanged over a 24-hour period, with great clinical significance. This preliminary study analyzes daily index changes. In 56 selected patients, full-mouth plaque score (FMPS), full-mouth bleeding score (FMBS), periodontal screening and recording (PSR) indices, and periodontal risk assessment (PRA) were recorded at baseline and three times per day (check-I: 08.30, check-II: 11.30, and check-III: 14.30), after appropriate cause-related therapy. Correlation between variables was statistically analyzed by Stata...
2017: International Journal of Dentistry
https://www.readbyqxmd.com/read/28822744/aldosterone-renin-cardiovascular-events-and-all-cause-mortality-among-african%C3%A2-americans-the-jackson-heart-study
#15
Joshua J Joseph, Justin B Echouffo-Tcheugui, Rita R Kalyani, Hsin-Chieh Yeh, Alain G Bertoni, Valery S Effoe, Ramon Casanova, Mario Sims, Wen-Chih Wu, Gary S Wand, Adolfo Correa, Sherita H Golden
OBJECTIVES: This study examined the association of aldosterone and plasma renin activity (PRA) with incident cardiovascular disease (CVD), using a composite endpoint of coronary heart disease, stroke, and/or heart failure and mortality among African Americans in the Jackson Heart Study. BACKGROUND: There is a paucity of data for the association of aldosterone and PRA with incident CVD or all-cause mortality among community-dwelling African Americans. METHODS: A total of 4,985 African American adults, 21 to 94 years of age, were followed for 12 years...
August 3, 2017: JACC. Heart Failure
https://www.readbyqxmd.com/read/28822297/validation-of-the-choking-risk-assessment-and-pneumonia-risk-assessment-for-adults-with-intellectual-and-developmental-disability-idd
#16
Justine Joan Sheppard, Georgia A Malandraki, Paula Pifer, Jill Cuff, Michelle Troche, Bronwyn Hemsley, Susan Balandin, Avinash Mishra, Roberta Hochman
BACKGROUND: Risk assessments are needed to identify adults with intellectual and developmental disability (IDD) at high risk of choking and pneumonia. AIM: To describe the development and validation of the Choking Risk Assessment (CRA) and the Pneumonia Risk Assessment (PRA) for adults with IDD. METHODS: Test items were identified through literature review and focus groups. Five-year retrospective chart reviews identified a positive choking group (PCG), a negative choking group (NCG), a positive pneumonia group (PPG), and a negative pneumonia group (NPG)...
August 16, 2017: Research in Developmental Disabilities
https://www.readbyqxmd.com/read/28818644/radioecological-assessment-and-radiometric-dating-of-sediment-cores-from-dynamic-sedimentary-systems-of-pra-and-volta-estuaries-ghana-along-the-equatorial-atlantic
#17
E Klubi, J M Abril, E Nyarko, A Laissaoui, M Benmansour
The Volta and Pra estuaries (Ghana, West Africa) are dynamical sedimentary systems whose natural equilibrium is being affected by anthropogenic activities. This paper reports depth-distributions of (210)Pb, (226)Ra, (234)Th, (40)K, (228)Ra and (137)Cs for two sediment cores from these estuaries. Bulk densities were not steady-state and well correlated with (40)K (p < 0.00005). Unsupported (210)Pb profiles were incomplete, non-monotonic and showed large fluctuations. The assumptions involved in the common (210)Pb-based dating models were not meet in these dynamical scenarios, and the use of (137)Cs as a time-marker is difficult in Equatorial and South-Hemisphere countries due to its low fallout rates...
August 14, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28814103/annals-express-associations-between-glycaemic-control-and-activation-of-the-renin-angiotensin-aldosterone-system-in-participants-with-type-2-diabetes-mellitus-and-hypertension
#18
Tomas Patrick Griffin, Deirdre Wall, Gerard A Browne, Michael C Dennedy, Paula O'Shea
INTRODUCTION: Hyperglycaemia increases succinate levels and succinate receptor (GPR91) activation in the kidney resulting in renin release. The aim of our study was to determine if there is an association between glycaemic control as evidenced by glycated haemoglobin (HbA1c) values and activation of the renin-angiotensin-aldosterone-system in patients with type 2 diabetes mellitus (T2DM) and hypertension. METHODS: A cross-sectional study was conducted at Galway University Hospitals between December 2014 and March 2015...
January 1, 2017: Annals of Clinical Biochemistry
https://www.readbyqxmd.com/read/28813472/an-intronic-line-1-insertion-in-mertk-is-strongly-associated-with-retinopathy-in-swedish-vallhund-dogs
#19
Richard Everson, Louise Pettitt, Oliver P Forman, Olivia Dower-Tylee, Bryan McLaughlin, Saija Ahonen, Maria Kaukonen, András M Komáromy, Hannes Lohi, Cathryn S Mellersh, Jane Sansom, Sally L Ricketts
The domestic dog segregates a significant number of inherited progressive retinal diseases, several of which mirror human retinal diseases and which are collectively termed progressive retinal atrophy (PRA). In 2014, a novel form of PRA was reported in the Swedish Vallhund breed, and the disease was mapped to canine chromosome 17. The causal mutation was not identified, but expression analyses of the retinas of affected Vallhunds demonstrated a 6-fold increased expression of the MERTK gene compared to unaffected dogs...
2017: PloS One
https://www.readbyqxmd.com/read/28808443/angiotensin-converting-enzyme-inhibition-and-parathyroid-hormone-secretion
#20
Sarah Zaheer, Jenifer M Brown, Molly Connors, Jonathan S Williams, Gail K Adler, Anand Vaidya
BACKGROUND: Prior studies suggest that renin-angiotensin-aldosterone system (RAAS) inhibitors decrease parathyroid hormone (PTH) secretion. OBJECTIVE: To evaluate the effect of angiotensin-converting enzyme inhibitors (ACEi) on serum PTH in participants with and without primary hyperparathyroidism (P-HPT). METHODS: An open-label, single-arm, pilot study whereby participants with and without P-HPT had PTH were evaluated before and after 1 week of maximally tolerated lisinopril therapy...
2017: International Journal of Endocrinology
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