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https://www.readbyqxmd.com/read/28530202/effect-of-age-and-blood-pressure-on-determination-of-normal-fluid-status-in-a-general-population-using-whole-body-and-calf-bioimpedance-techniques
#1
Fansan Zhu, Samer R Abbas, Peter Kotanko, Nathan W Levin
Normal fluid status (dry weight) can be identified by hydration markers established in the healthy population. The general population average could be influenced by age with its accompanying physiological changes and/or illness. The aims of this study were (1) to evaluate the effect of age and systolic blood pressure (SBP) on these markers; (2) to compare mean values of hydration markers as assessed by different bioimpedance techniques. Subjects from the general population (n  =  212, males 105, 57...
June 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28525669/relationship-between-bioimpedance-determined-body-composition-and-peritoneal-transport-in-peritoneal-dialysis
#2
Bernardo M da Costa, Gloria Del Peso, Maria Auxiliadora Bajo, Gilda Carreño, Marta Ferreira, Carina Ferreira, Rafael Selgas
PURPOSE: In peritoneal dialysis (PD) patients, body fluid homeostasis is dependent on peritoneal elimination of water and solutes. Patients with less favorable peritoneal transport parameters should be more overhydrated. Despite this, the association between faster transport and overhydration (OH) is weak, and the factors that influence hydration status are still poorly characterized. Modified peritoneal equilibration tests (PET) offer us new parameters that might correlate better with hydration status, like free water transport (FWT)...
May 18, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28512162/increase-in-extracellular-hydration-status-after-initiating-peritoneal-dialysis-electively
#3
Kwanpeemai Panorchan, Andrew Davenport
Renal replacement therapy is designed to treat uremic symptoms and correct hypervolemia. We hypothesized that starting peritoneal dialysis (PD) should reduce overhydration, and we measured body composition and hydration status using bioimpedance in PD patients prior to training and then at the first assessment of peritoneal membrane function. We studied 100 consecutive patients with a planned start to PD, without peritoneal infections or mechanical catheter problems, mean age 54.7 ± 17.1 years, 57% male and 25% diabetic...
May 2017: Peritoneal Dialysis International: Journal of the International Society for Peritoneal Dialysis
https://www.readbyqxmd.com/read/28509764/environmental-and-physiological-factors-affect-football-head-impact-biomechanics
#4
Jason P Mihalik, Adam Z Sumrall, Susan W Yeargin, Kevin M Guskiewicz, Kevin B King, Scott C Trulock, Edgar W Shields
PURPOSE: Recent anecdotal trends suggest a disproportionate number of head injuries in collegiate football players occur during preseason football camp. In warmer climates, this season also represents the highest risk for heat-related illness among collegiate football players. Since concussion and heat illnesses share many common symptoms, we need 1) to understand if environmental conditions, body temperature, and hydration status affect head impact biomechanics; and 2) to determine if an in-helmet thermistor could provide a valid measure of gastrointestinal temperature...
May 15, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28508338/fluid-balance-in-team-sport-athletes-and-the-effect-of-hypohydration-on-cognitive-technical-and-physical-performance
#5
REVIEW
Ryan P Nuccio, Kelly A Barnes, James M Carter, Lindsay B Baker
Sweat losses in team sports can be significant due to repeated bursts of high-intensity activity, as well as the large body size of athletes, equipment and uniform requirements, and environmental heat stress often present during training and competition. In this paper we aimed to: (1) describe sweat losses and fluid balance changes reported in team sport athletes, (2) review the literature assessing the impact of hypohydration on cognitive, technical, and physical performance in sports-specific studies, (3) briefly review the potential mechanisms by which hypohydration may impact team sport performance, and (4) discuss considerations for future directions...
May 15, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28492493/hydration-fluid-intake-and-related-urine-biomarkers-among-male-college-students-in-cangzhou-china-a-cross-sectional-study-applications-for-assessing-fluid-intake-and-adequate-water-intake
#6
Na Zhang, Songming Du, Zhenchuang Tang, Mengqi Zheng, Ruixia Yan, Yitang Zhu, Guansheng Ma
The objectives of this study were to assess the associations between fluid intake and urine biomarkers and to determine daily total fluid intake for assessing hydration status for male college students. A total of 68 male college students aged 18-25 years recruited from Cangzhou, China completed a 7-day cross-sectional study. From day 1 to day 7; all subjects were asked to complete a self-administered 7-day 24-h fluid intake record. The foods eaten by subjects were weighed and 24-h urine was collected for three consecutive days on the last three consecutive days...
May 11, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28484814/contemporary-approaches-to-perioperative-iv-fluid-therapy
#7
REVIEW
Paul S Myles, Sam Andrews, Jonathan Nicholson, Dileep N Lobo, Monty Mythen
BACKGROUND: Intravenous fluid therapy is required for most surgical patients, but inappropriate regimens are commonly prescribed. The aim of this narrative review was to provide evidence-based guidance on appropriate perioperative fluid management. METHOD: We did a systematic literature search of the literature to identify relevant studies and meta-analyses to develop recommendations. RESULTS: Of 275 retrieved articles, we identified 25 articles to inform this review...
May 8, 2017: World Journal of Surgery
https://www.readbyqxmd.com/read/28467665/bryophyte-gas-exchange-dynamics-along-varying-hydration-status-reveal-a-significant-carbonyl-sulphide-cos-sink-in-the-dark-and-cos-source-in-the-light
#8
Teresa E Gimeno, Jérôme Ogée, Jessica Royles, Yves Gibon, Jason B West, Régis Burlett, Sam P Jones, Joana Sauze, Steven Wohl, Camille Benard, Bernard Genty, Lisa Wingate
Carbonyl sulphide (COS) is a potential tracer of gross primary productivity (GPP), assuming a unidirectional COS flux into the vegetation that scales with GPP. However, carbonic anhydrase (CA), the enzyme that hydrolyses COS, is expected to be light independent, and thus plants without stomata should continue to take up COS in the dark. We measured net CO2 (A(C) ) and COS (A(S) ) uptake rates from two astomatous bryophytes at different relative water contents (RWCs), COS concentrations, temperatures and light intensities...
May 3, 2017: New Phytologist
https://www.readbyqxmd.com/read/28444935/hydration-status-influences-the-measurement-of-arterial-stiffness
#9
Aaron R Caldwell, Matthew A Tucker, Jenna Burchfield, Nicole E Moyen, Alf Z Satterfield, Ashley Six, Brendon P McDermott, Sean W Mulvenon, Matthew S Ganio
Consensus guidelines have attempted to standardize the measurement and interpretation of pulse wave velocity (PWV); however, guidelines have not addressed whether hydration status affects PWV. Moreover, multiple studies have utilized heat stress to reduce arterial stiffness which may lead to dehydration. This study utilized two experiments to investigate the effects of dehydration on PWV at rest and during passive heat stress. In experiment 1, subjects (n = 19) completed two trials, one in which they arrived euhydrated and one dehydrated (1·2[1·0]% body mass loss)...
April 26, 2017: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/28441936/rationale-and-design-of-bistro-a-randomized-controlled-trial-to-determine-whether-bioimpedance-spectroscopy-guided-fluid-management-maintains-residual-kidney-function-in-incident-haemodialysis-patients
#10
Simon J Davies, Fergus J Caskey, David Coyle, Elizabeth Lindley, Jamie Macdonald, Sandip Mitra, Martin Wilkie, Andrew Davenport, Ken Farrington, Indranil Dasgupta, Paula Ormandy, Lazaros Andronis, Ivonne Solis-Trapala, Julius Sim
BACKGROUND: Preserved residual kidney function (RKF) and normal fluid status are associated with better patient outcomes in incident haemodialysis patients. The objective of this trial is to determine whether using bioimpedance technology in prescribing the optimal post-dialysis weight can reduce the rate of decline of RKF and potentially improve patient outcomes. METHODS/DESIGN: 516 pateints commencing haemodialysis, aged >18 with RKF of > 3 ml/min/1...
April 26, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28424587/interactions-of-the-mechanosensitive-channels-with-extracellular-matrix-integrins-and-cytoskeletal-network-in-osmosensation
#11
REVIEW
Runsheng Jiao, Dan Cui, Stephani C Wang, Dongyang Li, Yu-Feng Wang
Life is maintained in a sea water-like internal environment. The homeostasis of this environment is dependent on osmosensory system translation of hydromineral information into osmotic regulatory machinery at system, tissue and cell levels. In the osmosensation, hydromineral information can be converted into cellular reactions through osmoreceptors, which changes thirst and drinking, secretion of antidiuretic vasopressin (VP), reabsorption of water and salt in the kidneys at systemic level as well as cellular metabolic activity and survival status at tissue level...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28419531/urinary-incontinence-and-hydration-a-population-based-analysis
#12
Marcella Willis-Gray, Jennifer M Wu, Alayne Markland
AIMS: To determine if there is an association between urinary incontinence (UI) and an objective measure of hydration status in men and women in a nationwide, population-based sample. METHODS: We utilized data from the 2009 to 2010 and 2011 to 2012 National Health and Nutrition Examination Surveys (NHANES), cross sectional surveys of the US non-institutionalized population. Our primary outcome was moderate/severe UI measured using a validated scale. Our exposure of interest was hydration status...
April 18, 2017: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/28414703/recruitment-methods-and-descriptive-results-of-a-physiologic-assessment-of-latino-farmworkers-the-california-heat-illness-prevention-study
#13
Diane C Mitchell, Javier Castro, Tracey L Armitage, Alondra J Vega-Arroyo, Sally C Moyce, Daniel J Tancredi, Deborah H Bennett, James H Jones, Tord Kjellstrom, Marc B Schenker
OBJECTIVE: The California heat illness prevention study (CHIPS) devised methodology and collected physiological data to assess heat related illness (HRI) risk in Latino farmworkers. METHODS: Bilingual researchers monitored HRI across a workshift, recording core temperature, work rate (metabolic equivalents [METs]), and heart rate at minute intervals. Hydration status was assessed by changes in weight and blood osmolality. Personal data loggers and a weather station measured exposure to heat...
April 14, 2017: Journal of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28412491/rapid-degradation-of-atrazine-by-hydroxyl-radical-induced-from-montmorillonite-templated-subnano-sized-zero-valent-copper
#14
Ran Hong, Zupei Guo, Juan Gao, Cheng Gu
In this study, subnano-sized zero-valent copper (ZVC) was synthesized using montmorillonite clay mineral as the template. The discrete distribution of surface charge on montmorillonite effectively separates the formed ZVC particles and inhibits their aggregation. X-ray diffraction result indicates that the size of ZVC particles on montmorillonite is ∼6 Å, which is much smaller than nano-ZVC prepared by conventional method. The montmorillonite templated ZVC (ZVCMMT) shows superior reactivity as indicated by the degradation of atrazine, over 90% atrazine (15 μM) could be degraded in a few min...
April 8, 2017: Chemosphere
https://www.readbyqxmd.com/read/28390725/comparison-of-a-commercially-available-oral-nutritional-supplement-and-intravenous-fluid-therapy-for-dehydration-in-dairy-calves
#15
Jared D Taylor, Merel Rodenburg, Timothy A Snider
Calf scours is a primary cause of morbidity and mortality in the dairy industry. Effective treatments are needed to minimize death, maximize welfare, and maintain growth and productivity. The objective of this trial was to compare the efficacy of a commercially available nutritional supplement (Diaque, Boehringer-Ingelheim Vetmedica Inc., St. Joseph, MO) and i.v. lactated Ringer's solution (LRS) in rehydrating, preventing acidemia, and correcting electrolyte imbalances in an experimental model for calf scours...
April 5, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28387536/case-study-hydration-intervention-improves-pre-game-hydration-status-in-female-collegiate-soccer-players
#16
Neele R Hoerner, Kirsten Domnik, Karsten Koehler, Wilhelm Schaenzer, Hans Braun
Little is known about whether athletes follow hydration guidelines. The objective of the present study was to assess fluid status in female soccer players in a hot and humid environment, and to assess the effect of an intervention aimed at preventing players from exercising in a dehydrated state. We hypothesized that following the intervention, players would exhibit improved hydration status, as indicated by greater voluntary fluid intake and improved hydration markers. Ten female collegiate soccer players (20±1yrs...
April 7, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/28379811/predictors-of-delirium-in-corticosteroid-treated-patients-with-advanced-cancer-an-exploratory-multicenter-prospective-observational-study
#17
Naoki Matsuo, Tatsuya Morita, Yoshinobu Matsuda, Kenichiro Okamoto, Yoshihisa Matsumoto, Keisuke Kaneishi, Takuya Odagiri, Hiroki Sakurai, Hideki Katayama, Ichiro Mori, Hirohide Yamada, Hiroaki Watanabe, Taro Yokoyama, Takashi Yamaguchi, Tomohiro Nishi, Akemi Shirado, Shuji Hiramoto, Toshio Watanabe, Hiroyuki Kohara, Satofumi Shimoyama, Etsuko Aruga, Mika Baba, Koki Sumita, Satoru Iwase
BACKGROUND: Corticosteroids are often used to treat fatigue and anorexia, but occasionally produce delirium. Information on the predictors of delirium in corticosteroid-treated cancer patients remains limited. OBJECTIVE: To identify potential factors predicting the development of delirium in corticosteroid-treated cancer patients. DESIGN: An exploratory, multicenter, prospective, observational study. SETTING/SUBJECTS: Inclusion criteria for this study were patients who had metastatic or locally advanced cancer and a fatigue or anorexia intensity score of 4 or more on a 0-10 Numerical Rating Scale...
April 2017: Journal of Palliative Medicine
https://www.readbyqxmd.com/read/28374036/dependence-of-the-hydration-status-of-bacterial-light-harvesting-complex-2-on-polyol-cosolvents
#18
Ying Shi, Jie Yu, Long-Jiang Yu, Peng Wang, Li-Min Fu, Jian-Ping Zhang, Zheng-Yu Wang-Otomo
Low molecular weight (MW) polyols are organic osmolytes influencing protein structure and activity. We have intended to investigate the effects of low MW polyols on the optical and the excited-state properties of the light-harvesting complex 2 (LH2) isolated from the photosynthetic bacterium Thermochromatium (Tch.) tepidum, a thermophile growing at ∼50 °C. Steady state spectroscopy demonstrated that, on increasing glycerol or sorbitol fractions up to 60% (polyol/water, v/v), the visible absorption of carotenoids (Crts) remained unchanged, while the near infrared Qy absorption of bacteriochlorophyll a (BChl) at 800 nm (B800) and 850 nm (B850) varied slightly...
May 17, 2017: Photochemical & Photobiological Sciences
https://www.readbyqxmd.com/read/28366765/non-invasive-oil-based-method-to-increase-topical-delivery-of-nucleic-acids-to-skin
#19
Manika Vij, Shamshad Alam, Nidhi Gupta, Vishvabandhu Gotherwal, Hemlata Gautam, Kausar M Ansari, Deenan Santhiya, Vivek T Natarajan, Munia Ganguli
Topical delivery of nucleic acids to skin has huge prospects in developing therapeutic interventions for cutaneous disorders. In spite of initial success, clinical translation is vastly impeded by the constraints of bioavailability as well as stability in metabolically active environment of skin. Various physical and chemical methods used to overcome these limitations involve invasive procedures or compounds that compromise skin integrity. Hence, there is an increasing demand for developing safe skin penetration enhancers for efficient nucleic acid delivery to skin...
March 30, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28353140/antimicrobial-use-in-patients-with-dementia-current-concerns-and-future-recommendations
#20
Carole Parsons, Jenny T van der Steen
Infections are common in people with dementia, and antibiotic use is widespread, albeit highly variable, across healthcare settings and countries. The few studies conducted to date that consider the appropriateness of antibiotic prescribing specifically for people with dementia focus on people with advanced dementia and suggest that much of the prescribing of antibiotics for these patients may be potentially inappropriate. We suggest that clinicians must consider a number of factors to determine appropriateness of antimicrobial prescribing for people with dementia, including the risks and benefits of assessing and treating infections, the uncertainty regarding the effects of antibiotics on patient comfort, goals of care and treatment preferences, hydration status, dementia severity and patient prognosis...
March 28, 2017: CNS Drugs
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