Trabecular bone attenuation and velocity assess by ultrasound pulse-echoes
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01.01.2020 |
Rusnak I.
Rosenberg N.
Halevy-Politch J.
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Applied Acoustics |
10.1016/j.apacoust.2019.107007 |
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Ссылка
© 2019 Elsevier Ltd Attenuation and velocity (Speed-of-Sound) in a trabecular bone were calculated and evaluated from ultrasound pulse-echoes detection and their processing, applying a single US transducer that operates in transmit/receive mode. The processing of US pulse-echoes utilized development of algorithms for the attenuation and the Speed-of-Sound in trabecular bone. These ultra-sound pulse-echoes were obtained from the front and rear surfaces of a trabecular bone sample. The motivation for this work was to develop an efficient intraosseous monitoring device that provides the Speed-of-Sound and attenuation intraoperatively and in real-time and therefore can be implemented during a surgery. Ultrasonic measurements were performed in the frequency range of 3.5–6.5 [MHz]. In these experiments, the fresh trabecular bone samples were from sheep femora and humerus. The measuring results were correlated (R2 ≥ 0.95) with those obtained previously, mainly during transmission mode studies. According to the obtained results, the presented method presumably will be utilized as a clinical tool in bone surgical procedures and therefore will be able to provide better outcomes, while monitoring intraoperatively and in real-rime intraosseous trabecular bone attenuation and its velocity: In the next stage of this study, the method will be carried out on human tissues and also intraoperatively, during human clinical trials. It is planned to perform it on long bones/tibia, vertebra, in neurosurgery – for drilling the skull and also in dental implantation surgery.
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Statistical approaches in the studies assessing associations between human milk immune composition and allergic diseases: A scoping review
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01.10.2019 |
Blyuss O.
Cheung K.
Chen J.
Parr C.
Petrou L.
Komarova A.
Kokina M.
Luzan P.
Pasko E.
Eremeeva A.
Peshko D.
Eliseev V.
Pedersen S.
Azad M.
Jarvinen K.
Peroni D.
Verhasselt V.
Boyle R.
Warner J.
Simpson M.
Munblit D.
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Nutrients |
10.3390/nu11102416 |
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© 2019 by the authors. Licensee MDPI, Basel, Switzerland. A growing number of studies are focusing on the associations between human milk (HM) immunological composition and allergic diseases. This scoping review aims to identify statistical methods applied in the field and highlight pitfalls and unmet needs. A comprehensive literature search in MEDLINE and Embase retrieved 13,607 unique records. Following title/abstract screening, 29 studies met the selection criteria and were included in this review. We found that definitions of colostrum and mature milk varied across the studies. A total of 17 out of 29 (59%) studies collected samples longitudinally, but only 12% of these used serial (longitudinal) analyses. Multivariable analysis was used in 45% of the studies, but statistical approaches to modelling varied largely across the studies. Types of variables included as potential confounding factors differed considerably between models. Discrimination analysis was absent from all studies and only a single study reported classification measures. Outcomes of this scoping review highlight lack of standardization, both in data collection and handling, which remains one of the main challenges in the field. Improved standardization could be obtained by a consensus group of researchers and clinicians that could recommend appropriate methods to be applied in future prospective studies, as well as already existing datasets.
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Fixed combinations in modern hypertension treatment algorithms
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01.01.2018 |
Sayutina E.
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Cardiovascular Therapy and Prevention (Russian Federation) |
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© 2018 Cardiovascular Therapy and Prevention. Modern appropriate treatment of hypertension involves the use of combination antihypertensive therapy. According to updated version of European Society of Cardiology 2018 guidelines, renin-angiotensinaldosterone system blockers must be used as first-line drugs, including in combination with hydrochlorothiazide. This article presents the algorithms for the management of patients with uncomplicated and asymptomatic (with target lesions) arterial hypertension. It also described the management of patients with concomitant cardiovascular, cerebrovascular, renal pathology and diabetes mellitus, and use of fixed combination of candesartan and hydrochlorothiazide. The article presents research data that confirmed not only the high antihypertensive efficacy of this combination, but also demonstrated its neutral metabolic profile, organ-protective effects, the ability to use in patients with chronic kidney disease, chronic heart failure, prior stroke, as well as high tolerability and treatment adherence.
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