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Tests and Measurement

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https://www.readbyqxmd.com/read/29334723/methacholine-bronchial-provocation-test-in-patients-with-asthma-serial-measurements-and-clinical-significance
#1
Hyun-Jung Seo, Pureun-Haneul Lee, Byeong-Gon Kim, Sun-Hye Lee, Jong-Sook Park, Junehyuck Lee, Sung-Woo Park, Do-Jin Kim, Choon-Sik Park, An-Soo Jang
Background/Aims: The methacholine bronchial provocation test (MBPT) is used to detect and quantify airway hyper-responsiveness (AHR). Since improvements in the severity of asthma are associated with improvements in AHR, clinical studies of asthma therapies routinely use the change of airway responsiveness as an objective outcome. The aim of this study was to assess the relationship between serial MBPT and clinical profiles in patients with asthma. Methods: A total of 323 asthma patients were included in this study...
January 17, 2018: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/29334692/body-mass-index-abdominal-adiposity-weight-gain-and-risk-of-developing-hypertension-a-systematic-review-and-dose-response-meta-analysis-of-more-than-2-3-million-participants
#2
REVIEW
A Jayedi, A Rashidy-Pour, M Khorshidi, S Shab-Bidar
OBJECTIVE: This study aimed to test the association between anthropometric measures and risk of developing hypertension. METHODS: We did a systematic search using PubMed and Scopus, from inception up to January 2017. Prospective cohort studies reporting the risk estimates of hypertension for three or more quantitative categories of indices of general and abdominal adiposity were included. Summary relative risks were calculated using random-effects models. RESULTS: Fifty-seven prospective cohort studies were included...
January 15, 2018: Obesity Reviews: An Official Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/29334679/the-il20-genetic-polymorphism-is-associated-with-altered-clinical-outcome-in-septic-shock
#3
Taka-Aki Nakada, Petch Wacharasint, James A Russell, John H Boyd, Emiri Nakada, Simone A Thair, Tadanaga Shimada, Keith R Walley
BACKGROUND: The IL10 family of genes includes crucial immune regulators. We tested the hypothesis that single nucleotide polymorphisms (SNPs) in IL10, IL19, IL20, and IL24 of the IL10 family gene cluster alter the clinical outcome of septic shock. METHODS: Patients with septic shock (n = 1,193) were genotyped for 13 tag SNPs of IL10, IL19, IL20, and IL24. IL20 gene expression was measured in genotyped lymphoblastoid cells in vitro. Cardiac surgical ICU patients (n = 981) were genotyped for IL20 rs2981573 A/G...
January 16, 2018: Journal of Innate Immunity
https://www.readbyqxmd.com/read/29334615/hemodynamic-and-metabolic-responses-to-self-paced-and-ramp-graded-exercise-testing-protocols
#4
Nicholas M Beltz, Fabiano Amorim, Ann L Gibson, Jeffrey M Janot, Len Kravitz, Christine M Mermier, Nathan Cole, Terence A Moriarty, Tony P Nunez, Sam Trigg, Lance Dalleck
PURPOSE: Recent examinations have shown lower maximal oxygen uptake (VO2max) during traditional ramp (RAMP) compared to self-paced (SPV) graded exercise testing (GXT) attributed to differences in cardiac ouput. The current study examined the differences in hemodyamic and metabolic responses between RAMP and SPV during treadmill exercise. METHODS: Sixteen recreationally trained men (23.7±3.0 yrs) completed two separate treadmill GXT protocols. SPV consisted of five 2-min stages (10 min total) of increasing speed clamped by the Borg RPE6-20 scale...
January 15, 2018: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/29334611/understanding-complex-tribofilms-by-means-of-h3bo3-b2o3-model-glasses
#5
Fabiana Spadaro, Antonella Rossi, Shivaprakash N Ramakrishna, Emmanuel Lainé, Philip Woodward, Nicholas D Spencer
The discovery of the spontaneous reaction of boric oxides with moisture in the air to form lubricious H3BO3 films has led to great interest in the tribology of boron compounds in general. Despite this, a study of the growth kinetics of H3BO3 on a B2O3 substrate under controlled relative humidity (RH), has not yet been reported in the literature. Here, we describe the tribological properties of H3BO3-B2O3 glass systems after aging under controlled relative humidity over different lengths of time. A series of tribological tests has been performed applying a normal load of 15 N, at both room temperature and 100°C in Yubase 4 oil...
January 15, 2018: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29334569/assessment-of-prehospital-hemorrhage-and-airway-care-using-a-simulation-model
#6
Mariya E Skube, Seth Witthuhn, Kristine Mulier, Bonnie Boucher, Elizabeth Lusczek, Greg J Beilman
BACKGROUND: The quality of prehospital care impacts patient outcomes. Military efforts have focused on training revision and the creation of high fidelity simulation models to address potentially survivable injuries. We sought to investigate the applicability of models emphasizing hemorrhage control and airway management to a civilian population. METHODS: Prehospital healthcare providers (PHPs) undergoing their annual training were enrolled. A trauma scenario was simulated with two modules: hemorrhage control and airway management...
January 12, 2018: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/29334550/chronic-hepatitis-c-virus-infection-and-subsequent-hiv-viral-load-among-women-with-hiv-initiating-antiretroviral-therapy
#7
Sarah J Willis, Stephen R Cole, Daniel Westreich, Andrew Edmonds, Christopher B Hurt, Svenja Albrecht, Kathryn Anastos, Michael Augenbraun, Margaret Fischl, Audrey L French, Aley G Kalapila, Roksana Karim, Marion G Peters, Michael Plankey, Eric C Seaberg, Phyllis C Tien, Adaora A Adimora
OBJECTIVE(S): One in four persons living with HIV is coinfected with HCV. Biological and behavioral mechanisms may increase HIV viral load among coinfected persons. Therefore, we estimated the longitudinal effect of chronic HCV on HIV suppression after ART initiation among women with HIV (WWH). DESIGN: HIV RNA was measured every six months among 441 WWH in the Women's Interagency HIV Study who initiated ART from 2000-2015. METHODS: Log-binomial regression models were used to compare the proportion of study visits with detectable HIV RNA between women with and without chronic HCV...
January 13, 2018: AIDS
https://www.readbyqxmd.com/read/29334512/association-between-alcohol-use-and-angina-symptoms-among-outpatients-from-the-veterans-health-administration
#8
Emily C Williams, Chris L Bryson, Haili Sun, David H Au, Katharine A Bradley
BACKGROUND: Alcohol use is associated with angina incidence, but associations between alcohol use and experience of angina among patients with coronary artery disease (CAD) have not been described. METHODS: Outpatients with CAD from 7 clinics in the Veterans Health Administration were surveyed; alcohol use was measured using the validated Alcohol Use Disorders Identification Test-Consumption scores categorized into 6 groups: nondrinking, low-risk drinking, and mild, moderate, severe, and very severe unhealthy alcohol use...
January 12, 2018: Journal of Addiction Medicine
https://www.readbyqxmd.com/read/29334438/in-vitro-and-in-vivo-evaluations-of-the-anticalculus-effect-of-a-novel-stabilized-stannous-fluoride-dentifrice
#9
Tao He, Mary Kay Anastasia, Marianne Zsiska, Teresa Farmer, Eva Schneiderman, Jeffery L Milleman
OBJECTIVES: To evaluate the effect of a novel stannous fluoride dentifrice with zinc citrate on calculus inhibition using both in vitro and clinical models. METHODS: Each investigation tested a novel stabilized 0.454% stannous fluoride dentifrice with zinc citrate as an anticalculus agent (Crest® Pro-Health™ smooth formula) compared to a negative control fluoride dentifrice. The in vitro study used the modified Plaque Growth and Mineralization Model (mPGM). Plaque biofilms were prepared and mineralized by alternate immersion of glass rods in human saliva and artificial mineralization solution...
December 2017: Journal of Clinical Dentistry
https://www.readbyqxmd.com/read/29334416/investigating-causal-associations-between-use-of-nicotine-alcohol-caffeine-and-cannabis-a-two-sample-bidirectional-mendelian-randomization-study
#10
Karin J H Verweij, Jorien L Treur, Jacqueline M Vink
BACKGROUND AND AIMS: Epidemiological studies consistently show co-occurrence of use of different addictive substances. Whether these associations are causal or due to overlapping underlying influences remains an important question in addiction research. Methodological advances have made it possible to use published genetic associations to infer causal relationships between phenotypes. In this exploratory study, we used Mendelian randomization (MR) to examine the causality of well-established associations between nicotine, alcohol, caffeine, and cannabis use...
January 15, 2018: Addiction
https://www.readbyqxmd.com/read/29334352/the-multimorbidity-cluster-analysis-tool-identifying-combinations-and-permutations-of-multiple-chronic-diseases-using-a-record-level-computational-analysis
#11
Kathryn Nicholson, Michael Bauer, Amanda Terry, Martin Fortin, Tyler Williamson, Amardeep Thind
Multimorbidity, or the co-occurrence of multiple chronic health conditions within an individual, is an increasingly dominant presence and burden in modern health care systems.  To fully capture its complexity, further research is needed to uncover the patterns and consequences of these co-occurring health states.  As such, the Multimorbidity Cluster Analysis Tool and the accompanying Multimorbidity Cluster Analysis Toolkit have been created to allow researchers to identify distinct clusters that exist within a sample of participants or patients living with multimorbidity...
December 13, 2017: Journal of Innovation in Health Informatics
https://www.readbyqxmd.com/read/29334345/arm-crank-ergometry-improves-cardiovascular-disease-risk-factors-and-community-mobility-independent-of-body-composition-in-high-motor-complete-spinal-cord-injury
#12
James J Bresnahan, Gary J Farkas, Jody L Clasey, James W Yates, David R Gater
OBJECTIVE: Evaluate the effect of aerobic exercise using arm crank ergometry (ACE) in high motor complete (ISNCSCI A/B) spinal cord injury (SCI) as primarily related to cardiovascular disease (CVD) risk factors and functional mobility and secondarily to body composition and metabolic profiles. DESIGN: Longitudinal interventional study at an academic medical center. METHODS: Ten previously untrained participants (M8/F2, Age 36.7 y ± 10.1, BMI 24...
January 15, 2018: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/29334338/at-home-genital-nerve-stimulation-for-individuals-with-sci-and-neurogenic-detrusor-overactivity-a-pilot-feasibility-study
#13
Dennis J Bourbeau, Kenneth J Gustafson, Steven W Brose
OBJECTIVE: Neurogenic bladder dysfunction, including neurogenic detrusor overactivity (NDO) is one of the most clinically significant problems for persons with spinal cord injury (SCI), affecting health and quality of life. Genital nerve stimulation (GNS) can acutely inhibit NDO-related reflex bladder contractions and increase bladder capacity. However, it is unknown if GNS can improve urinary continence or help meet individuals' bladder management goals during sustained use, which is required for GNS to be clinically effective...
January 15, 2018: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/29334325/concurrent-validity-and-reliability-of-torso-worn-inertial-measurement-unit-for-jump-power-and-height-estimation
#14
Timo Rantalainen, Paul B Gastin, Rhys Spangler, Daniel Wundersitz
The purpose of the present study was to evaluate the concurrent validity and test-retest repeatability of torso-worn IMU-derived power and jump height in a counter-movement jump test. Twenty-seven healthy recreationally active males (age, 21.9 [SD 2.0] y, height, 1.76 [0.7] m, mass, 73.7 [10.3] kg) wore an IMU and completed three counter-movement jumps a week apart. A force platform and a 3D motion analysis system were used to concurrently measure the jumps and subsequently derive power and jump height (based on take-off velocity and flight time)...
January 15, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29334273/the-barthel-index-and-the-cumulated-ambulation-score-are-superior-to-the-de-morton-mobility-index-for-the-early-assessment-of-outcome-in-patients-with-a-hip-fracture-admitted-to-an-acute-geriatric-ward
#15
Signe Hulsbæk, Rikke Faebo Larsen, Susanne Rosthøj, Morten Tange Kristensen
PURPOSE: To examine clinimetric properties of the de Morton Mobility Index (DEMMI) in patients with hip fracture in comparison with the modified Barthel Index (BI), Cumulated Ambulation Score (CAS), and 30-s Chair Stand Test (30-s CST). MATERIALS AND METHODS: Two hundred and twenty two patients with a hip fracture admitted to a geriatric ward following surgery were assessed on day 1 and at discharge (mean of 9 [SD 5.1] post-surgery days). RESULTS: Ninety eight percent and 89% of patients were not able to perform the 30-s CST at baseline and at discharge (large floor effect), respectively...
January 15, 2018: Disability and Rehabilitation
https://www.readbyqxmd.com/read/29334269/effects-of-a-transient-noise-reduction-algorithm-on-speech-intelligibility-in-noise-noise-tolerance-and-perceived-annoyance-in-cochlear-implant-users
#16
J Gertjan Dingemanse, Jantien L Vroegop, André Goedegebure
OBJECTIVE: To evaluate the validity and efficacy of a transient noise reduction algorithm (TNR) in cochlear implant processing and the interaction of TNR with a continuous noise reduction algorithm (CNR). DESIGN: We studied the effects of TNR and CNR on the perception of realistic sound samples with transients, using subjective ratings of annoyance, a speech-in-noise test and a noise tolerance test. STUDY SAMPLE: Participants were 16 experienced cochlear implant recipients wearing an Advanced Bionics Naida Q70 processor...
January 15, 2018: International Journal of Audiology
https://www.readbyqxmd.com/read/29334250/estimation-of-a-latent-variable-regression-growth-curve-model-for-individuals-cross-classified-by-clusters
#17
Audrey J Leroux, S Natasha Beretvas
The cross-classified multiple membership latent variable regression (CCMM-LVR) model is a recent extension to the three-level latent variable regression (HM3-LVR) model which can be utilized for longitudinal data that contains individuals who changed clusters over time (for instance, student mobility across schools). The HM3-LVR model can include the initial status on growth effect as varying across those clusters and allows testing of more flexible hypotheses about the influence of initial status on growth and of factors that might impact that relationship, but only in the presence of pure clustering of participants within higher-level units...
January 15, 2018: Multivariate Behavioral Research
https://www.readbyqxmd.com/read/29334198/enzyme-based-glucose-sensor-from-invasive-to-wearable-device
#18
REVIEW
Hyunjae Lee, Yongseok Joseph Hong, Seungmin Baik, Taeghwan Hyeon, Dae-Hyeong Kim
Blood glucose concentration is a key indicator of patients' health, particularly for symptoms associated with diabetes mellitus. Because of the large number of diabetic patients, many approaches for glucose measurement have been studied to enable continuous and accurate glucose level monitoring. Among them, electrochemical analysis is prominent because it is simple and quantitative. This technology has been incorporated into commercialized and research-level devices from simple test strips to wearable devices and implantable systems...
January 15, 2018: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/29334137/calcium-phosphate-precipitation-in-experimental-gaps-between-fluoride-containing-fast-setting-calcium-silicate-cement-and-dentin
#19
Bahram Ranjkesh, Ming Ding, Michel Dalstra, Jens R Nyengaard, Jacques Chevallier, Flemming Isidor, Henrik Løvschall
A novel fast-setting calcium silicate cement containing fluoride (novel-CSC) has been developed for applications in tooth crowns. The aim of this study was to assess the ability of the novel-CSC to close the experimental gaps at the dentin-cement interface. The novel-CSC was tested against Vitrebond and GC Fuji II LC. Experimental gaps of 50 or 300 μm width were created between the materials and dentin. Specimens with the 300-μm-wide gap were immersed in phosphate-buffered saline and the closed gap area was measured during 96 h...
January 15, 2018: European Journal of Oral Sciences
https://www.readbyqxmd.com/read/29334129/a-mitochondrial-targeted-antioxidant-improves-myofilament-ca2-sensitivity-during-prolonged-low-frequency-force-depression-at-low-po2
#20
Paulo G Gandra, Amy A Shiah, Leonardo Nogueira, Michael C Hogan
Skeletal muscle can develop a prolonged low frequency-stimulation force depression (PLFFD) following fatigue-inducing contractions. Increased levels of reactive oxygen species (ROS) have been implicated in the development of PLFFD. During exercise the skeletal muscle intracellular PO2 decreases to relatively low levels, and can be further decreased when there is an impairment in O2 diffusion or availability, such as in certain chronic diseases and during exercise at high altitude. Since ROS generation by mitochondria is elevated at very low PO2 in cells, we tested the hypothesis that treatment of muscle fibres with a mitochondrial-targeted antioxidant at a very low, near hypoxic PO2 , can attenuate PLFFD...
January 15, 2018: Journal of Physiology
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