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https://www.readbyqxmd.com/read/28922906/ethical-and-logistical-issues-raised-by-the-advanced-donation-program-pay-it-forward-scheme
#1
Lainie Friedman Ross, James R Rodrigue, Robert M Veatch
The advanced donation program was proposed in 2014 to allow an individual to donate a kidney in order to provide a voucher for a kidney in the future for a particular loved one. In this article, we explore the logistical and ethical issues that such a program raises. We argue that such a program is ethical in principle but there are many logistical issues that need to be addressed to ensure that the actual program is fair to both those who do and do not participate in this program.
October 1, 2017: Journal of Medicine and Philosophy
https://www.readbyqxmd.com/read/28922882/microsurgical-anatomy-of-the-interfascial-vein-its-significance-in-the-interfascial-dissection-of-the-pterional-approach
#2
Alvaro Campero, Pablo Ajler, Martín Paíz, Ramiro López Elizalde
BACKGROUND: The pterional approach (PA), together with its variants, is still one of the most common methods used by surgeons to reach the anterior and middle cranial base. A highly important technical detail during a PA is the preservation of the frontotemporal branch of the facial nerve, which can be achieved through an interfascial dissection. OBJECTIVE: To describe the anatomy of the interfascial vein (IFV), highlighting its recognition as a significant anatomic reference to perform an interfascial dissection (IFD)...
October 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28922650/constitutive-modeling-of-the-passive-inflation-extension-behavior-of-the-swine-colon
#3
Bhavesh Patel, Huan Chen, Aashish Ahuja, Joshua F Krieger, Jillian Noblet, Sean Chambers, Ghassan S Kassab
In the present work, we propose the first structural constitutive model of the passive mechanical behavior of the swine colon that is validated against physiological inflation-extension tests, and accounts for residual strains. Sections from the spiral colon and the descending colon were considered to investigate potential regional variability. We found that the proposed constitutive model accurately captures the passive inflation-extension behavior of both regions of the swine colon (coefficient of determination R(2)=0...
August 31, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28922582/relationship-between-optimum-mini-doses-of-glucagon-and-insulin-levels-when-treating-mild-hypoglycaemia-in-patients-with-type-1-diabetes-a-simulation-study
#4
Ajenthen Ranjan, Sabrina L Wendt, Signe Schmidt, Sten Madsbad, Jens J Holst, Henrik Madsen, Carsten B Knudsen, John B Jørgensen, Kirsten Nørgaard
Hypoglycaemia remains the main limiting factor in type 1 diabetes management. We developed an insulin-dependent glucagon dosing regimen for treatment of mild hypoglycaemia based on simulations. A validated glucose-insulin-glucagon model was used to describe seven virtual patients with insulin pump-treated type 1 diabetes. In each simulation, one of ten different and individualised subcutaneous insulin boluses was administered to decrease plasma glucose (PG) from 7.0 to ≤3.9 mmol/l. Insulin levels were estimated as ratio of actual to baseline serum insulin concentration (se/ba-insulin), insulin on board (IOB) or percentage of IOB to total daily insulin dose (IOB/TDD)...
September 18, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28922494/magnetic-nanotransducers-in-biomedicine
#5
Agostina Grillone, Gianni Ciofani
Owing to their abilities to identify diseased conditions, to modulate biological process, and to control cellular activities, magnetic nanoparticles have become one of the most popular nanomaterials exploited in the biomedical field. Targeted drug delivery, controlled drug release, hyperthermia treatments, imaging, and stimulation of several biological entities are just some of the several tasks that can be accomplished by taking advantage of magnetic nanoparticles in tandem with magnetic fields. The huge interest towards this class of nanomaterials rises from the possibility to physically drive their spatiotemporal localization inside the body, and to deliver an externally applied stimulation at a target site...
September 18, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28922315/validation-of-fear-of-falling-and-balance-confidence-assessment-scales-in-persons-with-dystonia
#6
M J Boyce, L Lam, F Chang, N Mahant, V S C Fung, L Bradnam
BACKGROUND AND PURPOSE: Falls are problematic for people living with neurological disorders and a fear of falling can impact on actual falls. Fear of falling is commonly assessed using the Falls Self-Efficacy Scale International (FES-I) or the Activities-specific Balance Confidence (ABC) Scale. These scales can predict risk of falling. We aimed to validate the FES-I and the ABC in persons with dystonia. METHODS: We conducted an online survey of people with dystonia, collecting information on demographics, 6-month falls history, dystonia disability, and the FES-I and ABC scales...
October 2017: Journal of Neurologic Physical Therapy: JNPT
https://www.readbyqxmd.com/read/28922163/bilingualism-and-cognitive-decline-a-story-of-pride-and-prejudice
#7
Evy Woumans, Jan Versijpt, Anne Sieben, Patrick Santens, Wouter Duyck
In a recent review, Mukadam, Sommerlad, and Livingston (2017) argue that bilingualism offers no protection against cognitive decline. The authors examined the results of 13 studies (five prospective, eight retrospective) in which monolinguals and bilinguals were compared for cognitive decline and onset of dementia symptoms. Analysis of four of the five prospective studies resulted in the conclusion that there was no difference between monolinguals and bilinguals, whereas seven of the eight retrospective studies actually showed bilingualism to result in a four-to-five year delay of symptom onset...
September 11, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28922113/force-based-representation-for-non-rigid-shape-and-elastic-model-estimation
#8
Antonio Agudo, Francesc Moreno-Noguer
This paper addresses the problem of simultaneously recovering 3D shape, pose and the elastic model of a deformable object from only 2D point tracks in a monocular video. This is a severely under-constrained problem that has been typically addressed by enforcing the shape or the point trajectories to lie on low-rank dimensional spaces. We show that formulating the problem in terms of a low-rank force space that induces the deformation and introducing the elastic model as an additional unknown, allows for a better physical interpretation of the resulting priors and a more accurate representation of the actual object's behavior...
September 15, 2017: IEEE Transactions on Pattern Analysis and Machine Intelligence
https://www.readbyqxmd.com/read/28922009/the-development-and-initial-validation-of-the-countertransference-management-scale
#9
Andrés E Pérez-Rojas, Beatriz Palma, Avantika Bhatia, John Jackson, Earta Norwood, Jeffrey A Hayes, Charles J Gelso
Countertransference is an important aspect of the therapeutic relationship that exists in therapies of all theoretical orientations, and depending on how it is managed, it can either help or hinder treatment. Management of countertransference has been measured almost exclusively with the Countertransference Factors Inventory (Van Wagoner, Gelso, Hayes, & Diemer, 1991) and its variations, all of which focus on 5 therapist qualities theorized to facilitate management: self-insight, conceptualizing ability, empathy, self-integration, and anxiety management...
September 2017: Psychotherapy
https://www.readbyqxmd.com/read/28921999/predictive-validity-and-adjustment-of-ideal-partner-preferences-across-the-transition-into-romantic-relationships
#10
Tanja M Gerlach, Ruben C Arslan, Thomas Schultze, Selina K Reinhard, Lars Penke
Although empirical research has investigated what we ideally seek in a romantic partner for decades, the crucial question of whether ideal partner preferences actually guide our mating decisions in real life has remained largely unanswered. One reason for this is the lack of designs that assess individuals' ideal partner preferences before entering a relationship and then follow up on them over an extended period. In the Göttingen Mate Choice Study (GMCS), a preregistered, large-scale online study, we used such a naturalistic prospective design...
September 18, 2017: Journal of Personality and Social Psychology
https://www.readbyqxmd.com/read/28921931/technical-note-a-simple-algorithm-to-convert-epid-grey-values-into-absorbed-dose-to-water-without-prior-knowledge
#11
Christine Boutry, Aurélie Sors, Jimmy Fontaine, Nolwenn Delaby, Gregory Delpon
PURPOSE: Full integration of EPID-based dosimetry in a global quality control workflow is still complicated. All the actual solutions are based on a relation between image grey-level signal and total linac delivered dose. In this study, we propose a simple algorithm relying pixel grey-level of EPID image with average linac delivered dose per acquisition frame. METHODS: Calibration models are constructed for Varian and Elekta linacs including scattering conditions and EPID-arm backscatter specific corrections...
September 16, 2017: Medical Physics
https://www.readbyqxmd.com/read/28921597/ultrastructure-of-spermatozoa-of-spider-crabs-family-mithracidae-crustacea-decapoda-brachyura-integrative-analyses-based-on-morphological-and-molecular-data
#12
Camila de O Assugeni, Tatiana Magalhães, Juan A Bolaños, Christopher C Tudge, Fernando L Mantelatto, Fernando J Zara
Recent studies based on morphological and molecular data provide a new perspective concerning taxonomic aspects of the brachyuran family Mithracidae. These studies proposed a series of nominal changes and indicated that the family is actually represented by a different number and representatives of genera than previously thought. Here, we provide a comparative description of the ultrastructure of spermatozoa and spermatophores of some species of Mithracidae in a phylogenetic context. The ultrastructure of the spermatozoa and spermatophore was observed by scanning and transmission electron microscopy...
September 18, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/28921538/a-fast-inverse-treatment-planning-strategy-facilitating-optimized-catheter-selection-in-image-guided-high-dose-rate-interstitial-gynecologic-brachytherapy
#13
Christian V Guthier, Antonio L Damato, Juergen W Hesser, Akila N Viswanathan, Robert A Cormack
PURPOSE: Interstitial high-dose-rate (HDR) brachytherapy is an important therapeutic strategy for the treatment of locally advanced gynecologic (GYN) cancers. The outcome of this therapy is determined by the quality of dose distribution achieved. This paper focuses on a novel yet simple heuristic for catheter selection for GYN HDR brachytherapy and their comparison against state of the art optimization strategies. The proposed technique is intended to act as a decision-supporting tool to select a favorable needle configuration...
September 18, 2017: Medical Physics
https://www.readbyqxmd.com/read/28921046/competition-for-electrons-between-pyridine-and-quinoline-during-their-simultaneous-biodegradation
#14
Hua Xu, Weihua Sun, Ning Yan, Danni Li, Xueqi Wang, Tingting Yu, Yongming Zhang, Bruce E Rittmann
Biodegradation of pyridine and quinoline is initiated with mono-oxygenation reactions that require an intracellular electron donor. Simultaneous biodegradation of both substrates should set up competition for the intracellular electron donor that may inhibit one or more of the mono-oxygenation steps. An internal circulation baffled biofilm reactor (ICBBR) was used to evaluate the impacts of competition during pyridine and quinoline biodegradation. Compared with independent biodegradation, pyridine and quinoline removal rates were slowed when biodegraded simultaneously, although the pyridine removal rate decreased more than for quinoline...
September 18, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28920895/matched-filtering-for-heart-rate-estimation-on-compressive-sensing-ecg-measurements
#15
Giulia Da Poian, Christopher J Rozell, Riccardo Bernardini, Roberto Rinaldo, Gari D Clifford
OBJECTIVE: Compressive Sensing (CS) has recently been applied as a low complexity compression framework for long-term monitoring of electrocardiogram signals using Wireless Body Sensor Networks. Long-term recording of ECG signals can be useful for diagnostic purposes and to monitor the evolution of several widespread diseases. In particular, beat to beat intervals provide important clinical information, and these can be derived from the ECG signal by computing the distance between QRS complexes (R-peaks)...
September 14, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28920715/the-mixed-message-behind-medication-assisted-treatment-for-substance-use-disorder
#16
Sean M Robinson, Bryon Adinoff
The gap between treatment utilization and treatment need for substance use disorders (SUDs) remains a significant concern in our field. While the growing call to bridge this gap often takes the form of more treatment services and/or better integration of existing services, this perspective proposes that more effective labels for and transparent descriptions of existing services would also have a meaningful impact. Adopting the perspective of a consumer-based health-care model (wherein treatments and services are products and patients are consumers) allows us to consider how labels like Addiction-focused Medical Management, Medication-Assisted Treatment, Medication-Assisted Therapy, and others may actually be contributing to the underutilization problem rather than alleviating it...
September 18, 2017: American Journal of Drug and Alcohol Abuse
https://www.readbyqxmd.com/read/28920056/management-of-refractory-ischemic-priapism-current-perspectives
#17
REVIEW
Marco Capece, Arianna Gillo, Andrea Cocci, Giulio Garaffa, Massimiliano Timpano, Marco Falcone
OBJECTIVES: The aim of the present manuscript is to review the current literature on priapism, focusing on the state-of-the-art knowledge of both the diagnosis and the treatment of the refractory ischemic priapism (IP). METHODS: Pubmed and EMBASE search engines were used to search for words "priapism", "refractory priapism", "penile prosthesis", "diagnosis priapism", "priapism treatment", "penile fibrosis", "priapism therapy". All the studies were carefully examined by the authors and then included in the review...
2017: Research and Reports in Urology
https://www.readbyqxmd.com/read/28919935/hybridization-of-single-nanocrystals-of-cs4pbbr6-and-cspbbr3
#18
Chris de Weerd, Junhao Lin, Leyre Gomez, Yasufumi Fujiwara, Kazutomo Suenaga, Tom Gregorkiewicz
Nanocrystals of all-inorganic cesium lead halide perovskites (CsPbX3, X = Cl, Br, I) feature high absorption and efficient narrow-band emission which renders them promising for future generation of photovoltaic and optoelectronic devices. Colloidal ensembles of these nanocrystals can be conveniently prepared by chemical synthesis. However, in the case of CsPbBr3, its synthesis can also yield nanocrystals of Cs4PbBr6 and the properties of the two are easily confused. Here, we investigate in detail the optical characteristics of simultaneously synthesized green-emitting CsPbBr3 and insulating Cs4PbBr6 nanocrystals...
September 7, 2017: Journal of Physical Chemistry. C, Nanomaterials and Interfaces
https://www.readbyqxmd.com/read/28919868/the-affective-core-of-the-self-a-neuro-archetypical-perspective-on-the-foundations-of-human-and-animal-subjectivity
#19
REVIEW
Antonio Alcaro, Stefano Carta, Jaak Panksepp
Psychologists usually considered the "Self" as an object of experience appearing when the individual perceives its existence within the conscious field. In accordance with such a view, the self-representing capacity of the human mind has been related to corticolimbic learning processes taking place within individual development. On the other hand, Carl Gustav Jung considered the Self as the core of our personality, in its conscious and unconscious aspects, as well as in its actual and potential forms. According to Jung, the Self originates from an inborn dynamic structure integrating the essential drives of our "brain-mind," and leading both to instinctual behavioral actions and to archetypal psychological experiences...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28919630/deep-vein-thrombosis-in-a-post-coronary-artery-bypass-grafting-patient-successful-conservative-management
#20
S H Sarker, A K Miraj, M A Hossain, M Aftabuddin
Deep vein thrombosis is an alarming medical emergency. Deep vein thrombosis or deep venous thrombosis (DVT) is the formation of a blood clot (thrombus) within a deep vein predominantly in the legs. Post-Coronary Artery Bypass Grafting deep vein thrombosis is a very rare medical condition relatively in Asian. Approximately 80% of deep vein thrombosis (DVTs) is clinically asymptomatic, 20% of those that actually demonstrate signs and symptoms can be easily confused with symptoms of other commonly presenting musculoskeletal disorders...
July 2017: Mymensingh Medical Journal: MMJ
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