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https://www.readbyqxmd.com/read/29353335/leveraging-model-informed-approaches-for-drug-discovery-and-development-in-the-cardiovascular-space
#1
REVIEW
Marissa F Dockendorf, Ryan C Vargo, Ferdous Gheyas, Anne S Y Chain, Manash S Chatterjee, Larissa A Wenning
Cardiovascular disease remains a significant global health burden, and development of cardiovascular drugs in the current regulatory environment often demands large and expensive cardiovascular outcome trials. Thus, the use of quantitative pharmacometric approaches which can help enable early Go/No Go decision making, ensure appropriate dose selection, and increase the likelihood of successful clinical trials, have become increasingly important to help reduce the risk of failed cardiovascular outcomes studies...
January 20, 2018: Journal of Pharmacokinetics and Pharmacodynamics
https://www.readbyqxmd.com/read/29353289/the-new-agreement-of-the-international-riga-consensus-conference-on-nasal-airway-function-tests
#2
K Vogt, G Bachmann-Harildstad, A Lintermann, A Nechyporenko, F Peters, K D Wernecke
The report reflects an agreement based on the consensus conference of the International Standardization Committee on the Objective Assessment of the Nasal Airway in Riga, 2nd Nov. 2016. The aim of the conference was to address the existing nasal airway function tests and to take into account physical, mathematical and technical correctness as a base of international standardization as well as the requirements of the Council Directive 93/42/EEC of 14 June 1993 concerning medical devices. Rhinomanometry, acoustic rhinometry, peak nasal inspiratory flow, Odiosoft-Rhino, optical rhinometry, 24-h measurements, computational fluid dynamics, nasometry and the mirrow test were evaluated for important diagnostic criteria, which are the precision of the equipment including calibration and the software applied; validity with sensitivity, specificity, positive and negative predictive values, reliability with intra-individual and inter-individual reproducibility and responsiveness in clinical studies...
January 21, 2018: Rhinology
https://www.readbyqxmd.com/read/29353150/biodegradable-spacer-reduces-the-subacromial-pressure-a-biomechanical-cadaver-study
#3
Yan Chevalier, Matthias F Pietschmann, Christoph Thorwächter, Ofir Chechik, Eliyahu Adar, Assaf Dekel, Peter E Müller
BACKGROUND: Failure after rotator cuff repair remains a major clinical problem and could be related to excessive pressures from the acromion. Previous studies with irreparable tears showed good clinical results of tendon healing with arthroscopic insertion of a protective biodegradable spacer balloon between the repaired tendon and the acromion. One hypothesis is that compression pressures on the repaired tendon will be reduced by the spacer. This cadaver study aimed to investigate the effects of this subacromial spacer on compression pressures over a repaired supraspinatus tendon in passive motion...
December 18, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/29353107/an-educational-intervention-to-enhance-clinical-skills-learning-experiences-of-nursing-students-and-teachers
#4
Marianne Wighus, Ida Torunn Bjørk
The simulation centre is a key setting for the acquisition of practical skills. However, pedagogical underpinnings of skills instruction in this setting are not always well founded. This study aimed to explore student and teacher experiences with an educational intervention to enhance clinical skills learning in the first semester of nursing education. The study had an exploratory design, where qualitative data were collected in focus group interviews involving 18 students and four teachers. The participants had generally positive experiences of the intervention...
January 5, 2018: Nurse Education in Practice
https://www.readbyqxmd.com/read/29352976/anterior-segment-imaging-for-angle-closure
#5
Sunee Chansangpetch, Prin Rojanapongpun, Shan C Lin
PURPOSE: To summarize the role of anterior segment imaging (AS-imaging) in angle closure diagnosis and management, and the possible advantages over the current standard of gonioscopy. DESIGN: Literature review and perspective. METHODS: Review of the pertinent publications with interpretation and perspective in relation to the use of AS-imaging in angle closure assessment focusing on anterior segment optical coherence tomography and ultrasound biomicroscopy...
January 15, 2018: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/29352492/variability-of-pulsed-energy-outputs-from-three-dermatology-lasers-during-multiple-simulated-treatments
#6
J Britton
BACKGROUND: Dermatology laser treatments are undertaken at regional departments using lasers of different powers and wavelengths. In order to achieve good outcomes there need to be good consistency of laser output across different weeks as it is custom and practice to break down the treatments into individual fractions. Departments will also collect information from test patches to help decide on the most appropriate treatment parameters for individual patients. OBJECTIVES: The objective of these experiments is to assess the variability of the energy outputs from a small number of lasers across multiple weeks at realistic parameters...
January 20, 2018: Photodermatology, Photoimmunology & Photomedicine
https://www.readbyqxmd.com/read/29351759/tracheal-intubation-in-critically-ill-patients-a-comprehensive-systematic-review-of-randomized-trials
#7
Luca Cabrini, Giovanni Landoni, Martina Baiardo Radaelli, Omar Saleh, Carmine D Votta, Evgeny Fominskiy, Alessandro Putzu, Cézar Daniel Snak de Souza, Massimo Antonelli, Rinaldo Bellomo, Paolo Pelosi, Alberto Zangrillo
BACKGROUND: We performed a systematic review of randomized controlled studies evaluating any drug, technique or device aimed at improving the success rate or safety of tracheal intubation in the critically ill. METHODS: We searched PubMed, BioMed Central, Embase and the Cochrane Central Register of Clinical Trials and references of retrieved articles. Finally, pertinent reviews were also scanned to detect further studies until May 2017. The following inclusion criteria were considered: tracheal intubation in adult critically ill patients; randomized controlled trial; study performed in Intensive Care Unit, Emergency Department or ordinary ward; and work published in the last 20 years...
January 20, 2018: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/29351735/assessing-the-effect-of-a-partly-unobserved-exogenous-binary-time-dependent-covariate-on-survival-probabilities-using-generalised-pseudo-values
#8
Ulrike Pötschger, Harald Heinzl, Maria Grazia Valsecchi, Martina Mittlböck
BACKGROUND: Investigating the impact of a time-dependent intervention on the probability of long-term survival is statistically challenging. A typical example is stem-cell transplantation performed after successful donor identification from registered donors. Here, a suggested simple analysis based on the exogenous donor availability status according to registered donors would allow the estimation and comparison of survival probabilities. As donor search is usually ceased after a patient's event, donor availability status is incompletely observed, so that this simple comparison is not possible and the waiting time to donor identification needs to be addressed in the analysis to avoid bias...
January 19, 2018: BMC Medical Research Methodology
https://www.readbyqxmd.com/read/29351372/a-preclinical-population-pharmacokinetic-model-for-anti-cd20-cd3-t-cell-dependent-bispecific-antibodies
#9
Gregory Z Ferl, Arthur Reyes, Liping L Sun, Melissa Cheu, Amy Oldendorp, Saroja Ramanujan, Eric G Stefanich
CD20 is a cell-surface receptor expressed by healthy and neoplastic B cells and is a well-established target for biologics used to treat B-cell malignancies. Pharmacokinetic (PK) and pharmacodynamic (PD) data for the anti-CD20/CD3 T-cell-dependent bispecific antibody BTCT4465A were collected in transgenic mouse and nonhuman primate (NHP) studies. Pronounced nonlinearity in drug elimination was observed in the murine studies, and time-varying, nonlinear PK was observed in NHPs, where three empirical drug elimination terms were identified using a mixed-effects modeling approach: i) a constant nonsaturable linear clearance term (7 mL/day/kg); ii) a rapidly decaying time-varying, linear clearance term (t½  = 1...
January 19, 2018: Clinical and Translational Science
https://www.readbyqxmd.com/read/29351167/can-caffeine-intake-improve-neuromuscular-and-technical-tactical-performance-during-judo-matches
#10
Marina Saldanha da Silva Athayde, Rafael Lima Kons, Daniele Detanico
This study aimed to verify the effect of caffeine intake on blood lactate concentrations and neuromuscular and technical-tactical performance during simulated judo matches. Fourteen male judo athletes received capsules containing caffeine or placebo and were evaluated in both conditions. Before the baseline and 1 hour after the caffeine/placebo intake, athletes performed the countermovement jump test (CMJ), handgrip strength, judogi grip strength test (JGST), and blood samples were collected. Subsequently, the athletes were submitted to three 5 minute matches with 15 minute intervals...
January 17, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29351132/mixed-methods-approach-to-humanistic-interprofessional-faculty-development
#11
Alice Fornari, Leanne M Tortez, Monika Lay, Bruce Hirsch, Donna Tanzi, Isabel Friedman, Alison P Ricardo, Renee Pekmezaris, William Branch
INTRODUCTION: This study evaluated the effectiveness of the Mentoring and Professionalism in Training (MAP-IT) program, a longitudinal, interprofessional faculty development curriculum designed to enhance clinicians' humanistic mentoring skills, specifically nurses and physicians. METHODS: During 2014 to 2016, two consecutive cohorts of nurses and physicians completed the MAP-IT program. Participants included 169 high potential mentors (HPMs) and 61 facilitator leaders...
January 16, 2018: Journal of Continuing Education in the Health Professions
https://www.readbyqxmd.com/read/29350974/use-of-simulation-based-training-to-aid-in-implementing-complex-health-technology
#12
Veffa Devers
Clinicians are adult learners in a complex environment that historically does not invest in training in a way that is conducive to these types of learners. Adult learners are independent, self-directed, and goal oriented. In today's fast-paced clinical setting, a practical need exists for nurses and clinicians to master the technology they use on a daily basis, especially as medical devices have become more interconnected and complex. As hospitals look to embrace new technologies, medical device companies must provide clinical end-user training...
January 2018: Biomedical Instrumentation & Technology
https://www.readbyqxmd.com/read/29350197/a-three-dimensional-correction-method-for-predicting-the-readings-of-a-pinpoint-chamber-on-the-cyberknife-sup-%C3%A2-sup-m6%C3%A2-machine
#13
Yongqian Zhang, Edward Brandner, Cihat Ozhasoglu, Ron Lalonde, Dwight E Heron, M Saiful Huq
The use of small fields in radiation therapy techniques has increased substantially in particular in stereotactic radiosurgery (SRS) and stereotactic body radiation therapy (SBRT). However, as field size reduces further still, the response of the detector changes more rapidly with field size, and the effects of measurement uncertainties become increasingly significant. This work presents a novel 3D dose volume-to-point correction method to predict the readings of a 0.015cc PinPoint chamber (PTW 31014) for both small static-fields and composite-field dosimetry formed by fixed cones on the CyberKnife® M6™ machine...
January 19, 2018: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29349990/-experimentation-of-the-relationship-between-medial-or-lateral-patellar-stabilizer-and-patellofemoral-stabilization
#14
Xing-Sen Liang, Zheng-Hong Yu, Yi-Kai Li, Ying-Ping Jiang, Xian-Wu Chen, Min Huang
OBJECTIVE: To study the contribution of medial or lateral stabilizer to the stability of the patella, to explore the function and effect of releasing the LPR clinically and to provide a biomechanical basis for the clinical treatment of patellar instability(PI). METHODS: The quadriceps femoris of 6 fresh human cadaver knees were loaded to simulate a normal condition of muscle strength. First the loading force was measured and recorded, which subluxated the patella with the different degrees of knee flexion...
April 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29349708/cost-effectiveness-of-empagliflozin-for-the-treatment-of-patients-with-type-2-diabetes-mellitus-at-increased-cardiovascular-risk-in-greece
#15
George Gourzoulidis, Charalampos Tzanetakos, Ioannis Ioannidis, Apostolos Tsapas, Georgia Kourlaba, Giannis Papageorgiou, Nikos Maniadakis
BACKGROUND AND OBJECTIVE: Type 2 diabetes mellitus (T2DM) is frequently associated with co-morbidities that exacerbate cardiovascular (CV) risk. CV disease is the leading cause of death in people with diabetes across the world and accounts for approximately half the deaths in the T2DM population. Hence, the objective of present study was to evaluate the cost-effectiveness of empagliflozin, in addition to standard of care (SoC), for the treatment of adult patients with T2DM and high CV risk in Greece...
January 18, 2018: Clinical Drug Investigation
https://www.readbyqxmd.com/read/29348050/do-estimates-of-blood-loss-differ-between-student-midwives-and-midwives-a-multicenter-cross-sectional-study
#16
Marine Pranal, Aline Guttmann, Lemlih Ouchchane, Ines Parayre, Olivier Rivière, Sylvie Leroux, Sylvie Bonnefont, Anne Debost-Legrand, Françoise Vendittelli
OBJECTIVE: the principal objective of this study was to assess the quality of blood loss estimates by midwives and student midwives. The secondary objectives were: to assess the intraobserver agreement of visual blood estimates and the rate of underestimation of blood loss by participants, and to estimate the sensitivity, specificity, and negative likelihood ratio of these estimates for clinically pertinent blood losses (≥ 500mL and ≥ 1000mL). DESIGN: multicenter cross-sectional study...
December 24, 2017: Midwifery
https://www.readbyqxmd.com/read/29347854/a-systematic-review-of-health-economic-models-and-utility-estimation-methods-in-schizophrenia
#17
B Németh, A N Fasseeh, A Molnár, I Bitter, M Horváth, K Kóczián, Á Götze, B Nagy
There is a growing need for economic evaluations describing the disease course, as well as the costs and clinical outcomes related to the treatment of schizophrenia. Areas covered: A systematic review on studies describing health economic models in schizophrenia and a targeted literature review on utility mapping algorithms in schizophrenia were carried out. Models found in the review were collated and assessed in detail according to their type and various other attributes. Fifty-nine studies were included in the review...
January 19, 2018: Expert Review of Pharmacoeconomics & Outcomes Research
https://www.readbyqxmd.com/read/29347394/linking-biological-and-physical-aging-dynamical-scaling-of-multicellular-regeneration
#18
Yuting Lou, Jufeng Xia, Wei Tang, Yu Chen
The fight against biological aging (bio-aging) is long-standing, with the focus of intense research aimed at maintaining high rates of tissue regeneration to promote health and longevity. Nevertheless, there are overwhelming complexities associated with the quantitative analysis of aging. In this study, we sought to quantify bio-aging based on physical aging, by mapping instances of multicellular regeneration to the relaxation of physical systems. An experiment of delayed wound healing assays was devised to obtain delay-dependent healing data...
December 2017: Physical Review. E
https://www.readbyqxmd.com/read/29346681/optimal-number-and-sizes-of-the-doses-in-fractionated-radiotherapy-according-to-the-lq-model
#19
C Bruni, F Conte, F Papa, C Sinisgalli
We address a non-linear programming problem to find the optimal scheme of dose fractionation in cancer radiotherapy. Using the LQ model to represent the response to radiation of tumour and normal tissues, we formulate a constrained non-linear optimization problem in terms of the variables number and sizes of the dose fractions. Quadratic constraints are imposed to guarantee that the damages to the early and late responding normal tissues do not exceed assigned tolerable levels. Linear constraints are set to limit the size of the daily doses...
January 15, 2018: Mathematical Medicine and Biology: a Journal of the IMA
https://www.readbyqxmd.com/read/29346509/a-distance-based-approach-for-testing-the-mediation-effect-of-the-human-microbiome
#20
Jie Zhang, Zhi Wei, Jun Chen
Motivation: Recent studies have revealed a complex interplay between environment, the human microbiome, and health and disease. Mediation analysis of the human microbiome in these complex relationships could potentially provide insights into the role of the microbiome in the etiology of disease and, more importantly, lead to novel clinical interventions by modulating the microbiome. However, due to the high dimensionality, sparsity, non-normality and phylogenetic structure of microbiome data, none of the existing methods are suitable for testing such clinically important mediation effect...
January 15, 2018: Bioinformatics
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