Search results for " Design"

Feasibility of future epidemiological studies on possible health effects of mobile phone base stations.

2006

The increasing deployment of mobile communication base stations led to an increasing demand for epidemiological studies on possible health effects of radio frequency emissions. The methodological challenges of such studies have been critically evaluated by a panel of scientists in the fields of radiofrequency engineering/dosimetry and epidemiology. Strengths and weaknesses of previous studies have been identified. Dosimetric concepts and crucial aspects in exposure assessment were evaluated in terms of epidemiological studies on different types of outcomes. We conclude that in principle base station epidemiological studies are feasible. However, the exposure contributions from all relevant …

2021

Abstract Background As virtual reality (VR) has become more accessible, it has increasingly come into focus for clinical application. Therapy with VR shows potential as an engaging, effective, and economic way to improve cognitive abilities following a stroke. Objectives While application of VR in clinical settings appears promising, its widespread use will crucially depend on acceptance of immersive head mounted display virtual reality (HMD-VR) systems when used in different patient groups. This study aimed to investigate acceptance of HMD-VR in stroke patients compared to a control group of healthy age-matched adults. Methods The attitude towards HMD-VR, as one of the most important predi…

Comparison of One-Year Outcomes Between the ihtDEStiny BD Stent and the Durable-Polymer Everolimus- and Zotarolimus-Eluting Stents: A Propensity-Scor…

2021

Abstract Objectives We sought to evaluate clinical outcomes in patients treated with the drug-eluting stent ihtDEStiny BD. Background The ihtDEStiny BD stent is a metallic sirolimus eluting stent with a biodegradable polymer with both drug and polymer coating the abluminal surface of the stent and balloon. Methods In this study, the clinical outcomes of a multicenter prospective registry of patients treated with this stent (DEStiny group) were analyzed and compared with those of a control group of patients treated with durable polymer everolimus or zotarolimus eluting stents (CONTROL group) paired by propensity score matching . Primary outcome was the target vessel failure (TVF) at 12 month…

Defining and Assessing Public Health Functions: A Global Analysis.

2016

Given the broad scope and intersectoral nature of public health structures and practices, there are inherent difficulties in defining which services fall under the public health remit and in assessing their capacity and performance. The aim of this study is to analyze how public health functions and practice have been defined and operationalized in different countries and regions around the world, with a specific focus on assessment tools that have been developed to evaluate the performance of essential public health functions, services, and operations. Our review has identified nearly 100 countries that have carried out assessments, using diverse analytical and methodological approaches. …

Modern Strategies in the Prevention of Implant-Associated Infections

2005

The application of medical devices either for temporary or permanent use has become an indispensible part of almost all fields of medicine. However, foreign bodies are associated with a substantial risk of bacterial and fungal infections. Implant-associated infections significantly contribute to the still increasing problem of nosocomial infections. To reduce the incidence of such infections, specific guidelines providing evidence-based recommendations and comprising both technological and nontechnological strategies for prevention have been established. Strict adherence to hygienic rules during insertion or implantation of the device are aspects of particular importance. Besides such basi…

Medicated hydrogels of hyaluronic acid derivatives for use in orthopedic field.

2013

Physical hydrogels have been obtained from hyaluronic acid derivatized with polylactic acid in the presence or in the absence of polyethylene glycol chains. They have been extemporarily loaded with antibacterial agents, such as vancomycin and tobramycin. These medicated hydrogels have been used to coat titanium disks (chosen as simple model of orthopedic prosthesis) and in vitro studies in simulated physiological fluid have been performed as a function of time and for different drug loading and polymer concentration values. Sterilization process performed on the hydrogels does not change their rheological behavior and release properties as well as the chemical structure of starting copolyme…

Unfavorable influence of structured exercise program on total leisure-time physical activity

2012

In randomized controlled trials (RCTs), with customized structured physical exercise activity (SPEA) interventions, the dose of leisure-time physical activity (LTPA) should exceed the LTPA dose of the nonexercising control (C) group. This increase is required to substantiate health improvements achievable by exercise. We aimed to compare the dose of SPEA, LTPA, and total LTPA (SPEA + LTPA) between a randomized Nordic walking (NW) group, a power-type resistance training (RT) group, and a C group during a 12-week exercise intervention in obese middle-aged men (n = 144) with impaired glucose regulation. The dose of physical activity was measured with diaries using metabolic equivalents. No sig…

Ergebnisse nach Implantation einer Worst Iris Claw Lens zur Korrektur der hohen Myopie

2001

Fragestellung. Ziel dieser prospektiven klinischen Studie war die Erfassung der Refraktion, des korrigierten Visus und des Vorderkammerreizzustandes nach Implantation einer Worst Iris Claw Lens zur Korrektur der hohen Myopie. Patienten und Methode. Von Dezember 1996 bis Februar 1999 wurde bei insgesamt 44 phaken Augen von 28 Patienten eine Worst Iris Claw Lens implantiert. Es folgte eine Nachbeobachtungszeit von 6 Wochen bzw. 6 Monaten. Ergebnisse. Das mittlere praoperative spharische Aquivalent betrug −17,35±3,57 dpt. Sechs Monate postoperativ lag die Refraktion bei 79% der Augen im Intervall von ±1,0 dpt von der Zielrefraktion entfernt. Der mittlere korrigierte Visus stieg von praoperativ…

Creencias respecto al ejercicio físico y cambios psicológicos tras sufrir un Síndrome Coronario Agudo

2019

Actualmente, siguen existiendo algunos interrogantes acerca del estado psicológico de las personas que han sufrido un Síndrome Coronario Agudo (SCA). El presente trabajo tiene un doble objetivo. En primer lugar, a partir de un estudio piloto compuesto por hombres y mujeres, evaluar los cambios en las creencias respecto a la utilidad del ejercicio como herramienta de salud psicológica y física. En segundo lugar, a partir de un segundo estudio formado por mujeres, comparar los cambios en variables psicológicas y su ajuste a la enfermedad así como observar diferencias, tras su paso por un programa de rehabilitación cardiaca que incluye ejercicio físico. Se evaluaron 37 pacientes de ambos sexos…

A Monte Carlo-aided design of a modular 241Am-Be neutron irradiator

2013

Monte Carlo studies aimed at designing a modular 241Am-Be neutron irradiator for testing neutron detectors and personal dosimeters and processing large volume samples are reported in this study. The evaluation of the shapes and thicknesses of the moderator and shielding materials was carried out by a MCNP5 Monte Carlo simulation code. The reliability of the simulation was experimentally verified by the activation of gold foils and TLD dosimeter measurements in an irradiation cell placed at the center of the test configuration.