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fluid and electrolyte

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https://www.readbyqxmd.com/read/28816397/a-flow-through-column-electrolytic-cell-for-supercritical-fluid-chromatography
#1
Kazuhiro Yamamoto, Tatsuya Ueki, Naoyuki Higuchi, Kouji Takahashi, Akira Kotani, Hideki Hakamata
A novel flow-through column electrolytic cell was proposed as a detector to obtain current signals for supercritical fluid chromatography. The electrochemical cell consisted of two electrodes and its holder, and a working and a counter electrode were fabricated from 192 carbon strings, which were composed of 400 carbon fibers of 10 μm in diameter filled into a heat-shrinkable tube. These electrodes were placed in the center of a holder made from polyether ether ketone blocks and they were separated by polytetrafluoroethylene membrane filters...
August 17, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28814497/extracellular-acid-base-balance-and-ion-transport-between-body-fluid-compartments
#2
REVIEW
Julian L Seifter, Hsin-Yun Chang
Clinical assessment of acid-base disorders depends on measurements made in the blood, part of the extracellular compartment. Yet much of the metabolic importance of these disorders concerns intracellular events. Intracellular and interstitial compartment acid-base balance is complex and heterogeneous. This review considers the determinants of the extracellular fluid pH related to the ion transport processes at the interface of cells and the interstitial fluid, and between epithelial cells lining the transcellular contents of the gastrointestinal and urinary tracts that open to the external environment...
September 2017: Physiology
https://www.readbyqxmd.com/read/28814258/management-of-complicated-pneumonia-in-childhood-a-review-of-recent-literature
#3
John B Darby, Amrita Singh, Ricardo Quinonez
BACKGROUND: Despite declining rates of community acquired pneumonia (CAP) in children, complicated pneumonia has been on the rise in the last two decades. The management of complicated pneumonia is challenging and continues to be an area of investigation. Despite recently published guidelines, many gaps exist and recent studies attempt to answer challenging questions. OBJECTIVE: To review recently published literature to inform the clinician on the most up to date management of complicated pneumonia in children...
August 16, 2017: Reviews on Recent Clinical Trials
https://www.readbyqxmd.com/read/28814256/current-issues-in-intravenous-fluid-use-in-hospitalized-children
#4
Jennifer Fuchs, Sarah T Adams, Julie Byerley
BACKGROUND: Fluid and electrolyte therapy is an important component in the care of the hospitalized child. Previous pediatric guidelines have followed the Holliday-Segar method of calculating and delivering maintenance IV fluids, using hypotonic fluids in maintenance therapy. However, research demonstrates that hypotonic fluids can lead to iatrogenic hyponatremia and that isotonic fluid is a safer alternative. OBJECTIVE: To provide the ideal approach to intravenous (IV) fluid use in the hospitalized child and determine the safety and effectiveness of isotonic maintenance fluid therapy...
August 16, 2017: Reviews on Recent Clinical Trials
https://www.readbyqxmd.com/read/28810281/-hyponatremia-differential-diagnosis-and-treatment
#5
Heiner Mönig, Alexander Arlt
Hyponatremia is the most common electrolyte abnormality seen in hospitalized patients, with up to 30 % having a plasma sodium concentration below 135 mmol/l. It is now clear that the clinical problem extends beyond the neurological symptoms, which can be explained by intracerebral osmotic fluid shifts and brain edema. Instead, chronic hyponatremia is associated with impaired gait stability and an increased risk of bone fragility fractures. Moreover, hyponatremia has been demonstrated to be an indicator of poor prognosis in a variety of conditions...
August 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/28806049/electrolytes-oral-electrolyte-solutions
#6
Lisa Harris
Oral electrolyte solutions are used widely for rehydration in diarrheal illness and to maintain hydration during vigorous exercise. In diarrheal illness, an oral rehydration solution (ORS) typically is preferred over intravenous fluids except for patients with severe dehydration. The preferred ORS is one similar to the glucose-containing reduced osmolarity World Health Organization ORS. There also are polymer-based solutions that use rice or wheat as the source of carbohydrates but these are not widely recommended...
August 2017: FP Essentials
https://www.readbyqxmd.com/read/28806046/electrolytes-sodium-disorders
#7
Michael M Braun, Megan Mahowald
Sodium disorders (ie, hyponatremia, hypernatremia) are common electrolyte disturbances in clinical medicine and are associated with increased rates of morbidity and mortality. Etiologies of hyponatremia are classified into four categories. The first is pseudohyponatremia, in which the sodium level is low due to hyperproteinemia, hyperlipidemia, or hyperglycemia. The other three categories are based on overall patient fluid status and include hypovolemic (commonly due to fluid loss), hypervolemic (commonly due to fluid retention from heart failure, cirrhosis, or renal failure), and euvolemic (most often because of syndrome of inappropriate secretion of antidiuretic hormone)...
August 2017: FP Essentials
https://www.readbyqxmd.com/read/28803771/perioperative-management-of-patients-with-end-stage-renal-disease
#8
REVIEW
Hirotsugu Kanda, Yuji Hirasaki, Takafumi Iida, Megumi Kanao-Kanda, Yuki Toyama, Takashi Chiba, Takayuki Kunisawa
End-stage renal disease (ESRD) is associated with significant alterations in cardiovascular function; homeostasis of body fluid, electrolytes, and acid-base equilibrium; bone metabolism, erythropoiesis; and blood coagulation. The prevalence of ESRD is increasing rapidly worldwide, as is the number of patients requiring surgery under general anesthesia. Patients with ESRD have significantly higher risks of perioperative morbidity and mortality due to multiple comorbidities. The perioperative management of patients with ESRD under general anesthesia therefore requires special considerations and a careful multidisciplinary approach...
April 13, 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/28802231/phytochemical-properties-and-pharmacological-effects-of-quercus-ilex-l-aqueous-extract-on-gastrointestinal-physiological-parameters-in-vitro-and-in-vivo
#9
Kaïs Rtibi, Imen Hammami, Slimen Selmi, Dhekra Grami, Hichem Sebai, Mohamed Amri, Lamjed Marzouki
INTRODUCTION: Several research studies have reported on the pharmacological relevance of the medicinal plants used for treating various gastrointestinal disorders and controlling the dietary glucose uptake in the intestinal tract. METHODS: Male rats were used to investigate the pharmacological effects of green oak acorn aqueous extract (GOAE) on gastrointestinal physiological parameters in vivo and in vitro. In this respect, the gastro-intestinal motility and hypersecretion essays were evaluated using a simple test meal (10% charcoal in 5% gum arabic) and castor oil induced diarrhea...
August 9, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28801072/irinotecan-chemotherapy-induced-intestinal-oxidative-stress-underlying-causes-of-disturbed-mucosal-water-and-electrolyte-transport
#10
Kaïs Rtibi, Slimen Selmi, Dhekra Grami, Hichem Sebai, Mohamed Amri, Lamjed Marzouki
Irinotecan, a chemotherapy drug, can cause acute diarrhea immediately after administration. Hence, the present study was designed to investigate the gastrointestinal (GI) disturbances after an intraperitoneal (IP) administration of irinotecan in rats.Twenty Wistar rats were separated into two groups of ten. Group A was considered as a control group (NaCl, 0.9%). Group B was treated with irinotecan at a single dose of 200mgkg(-1). The rats were observed for defecation. For the enteropooling test, the animals were sacrificed by decapitation 1h post-treatment...
July 23, 2017: Pathophysiology: the Official Journal of the International Society for Pathophysiology
https://www.readbyqxmd.com/read/28799360/system-size-effects-in-ionic-fluids-under-periodic-boundary-conditions
#11
Jeff P Thompson, Isaac C Sanchez
We investigate the system-size dependence of the thermodynamic properties of ionic fluids under periodic boundary conditions. Following an approach previously developed in the context of quantum Monte Carlo simulations of many-electron systems, we show that the leading-order finite-size artifact in the Coulomb energy per particle of a classical fluid of N structureless ions at given density and temperature is simply -kBT(2N)(-1). Analytical approximations for the periodicity-induced size dependence of the excess thermodynamic properties of the fluid in the weak-coupling regime are obtained within the linearized Debye-Hückel theory...
December 7, 2016: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28799261/serum-osmolarity-in-male-patients-with-bipolar-disorder-manic-episode
#12
Tevfik Kalelioglu, Nesrin Karamustafalioglu, Abdullah Genc, Murat Kocabiyik
Imbalance of water and electrolyte homeostasis has been suggested to be associated with the acute episodes of bipolar disorder. In this study we aimed to investigate, for the first time, the serum osmolarity in bipolar disorder manic episode. A total of 68 bipolar inpatients in manic episode and 60 age-gender matched healthy controls were included in the study. Serum osmolarity was calculated from Sodium (Na(+) ), glucose and blood urea nitrogen (BUN) according to formula of (2 × Na(+) ) + (BUN/2.8) + (Glucose/18)...
August 10, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/28794292/cross-linked-polyelectrolyte-and-its-function-in-adsorption-of-fluid-and-excess-nitrogen-waste-products-an-experimental-study-on-dialysate-effluent-fluid
#13
Hamid Tayebi Khosroshahi, Behzad Abedi, Sabalan Daneshvar, Effat Alizadeh, Mohammadreza Khalilzadeh, Yaghoub Abedi
INTRODUCTION: One of the most important issues in patients with chronic kidney disease is fluid retention and volume overload accompanied by retention of nitrogenous waste products and some electrolytes. Bowel fluid contains high levels of urea, creatinine, uric acid, and electrolytes, which make it a potential candidate for intestinal excretion of nitrogen wastes and electrolytes. Cross-linked polyelectrolyte (CLP) is a polymer that, given orally, absorbs excess fluid, electrolyte, and nitrogenous waste products...
July 2017: Iranian Journal of Kidney Diseases
https://www.readbyqxmd.com/read/28782823/drugs-and-the-kidneys-clinical-pharmacology-perspectives
#14
EDITORIAL
John Vincent
The focus of this edition of Clinical Pharmacolgoy & Therapeutics (CPT) is on drugs and renal function and will not include a detailed discussion of kidney disease and its treatment. It is well recognized that drugs affect the kidneys in different ways, while kidney disease impacts drug metabolism and response. It is impossible to underestimate the value of the kidneys to man in health and disease, from regulation of fluid and electrolyte balance to participating in drug metabolism and transport. Additionally, the kidneys serve as targets for drugs used to treat cardiovascular (CV) diseases including hypertension and heart failure, metabolic diseases such as diabetes mellitus and obesity, chronic kidney disease (CKD), as well as playing a role in the regulation of several hormones...
September 2017: Clinical Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28776071/towards-quantification-of-toxicity-of-lithium-ion-battery-electrolytes-development-and-validation-of-a-liquid-liquid-extraction-gc-ms-method-for-the-determination-of-organic-carbonates-in-cell-culture-materials
#15
Jenny Strehlau, Till Weber, Constantin Lürenbaum, Julia Bornhorst, Hans-Joachim Galla, Tanja Schwerdtle, Martin Winter, Sascha Nowak
A novel method based on liquid-liquid extraction with subsequent gas chromatography separation and mass spectrometric detection (GC-MS) for the quantification of organic carbonates in cell culture materials is presented. Method parameters including the choice of extraction solvent, of extraction method and of extraction time were optimised and the method was validated. The setup allowed for determination within a linear range of more than two orders of magnitude. The limits of detection (LODs) were between 0...
August 3, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28772371/effects-of-alloying-element-ca-on-the-corrosion-behavior-and-bioactivity-of-anodic-films-formed-on-am60-mg-alloys
#16
Anawati Anawati, Hidetaka Asoh, Sachiko Ono
Effects of alloying element Ca on the corrosion behavior and bioactivity of films formed by plasma electrolytic oxidation (PEO) on AM60 alloys were investigated. The corrosion behavior was studied by conducting electrochemical tests in 0.9% NaCl solution while the bioactivity was evaluated by soaking the specimens in simulated body fluid (SBF). Under identical anodization conditions, the PEO film thicknesses increased with increasing Ca content in the alloys, which enhanced the corrosion resistance in NaCl solution...
December 26, 2016: Materials
https://www.readbyqxmd.com/read/28771405/pediatric-readmissions-after-hospitalizations-for-lower-respiratory-infections
#17
Mari M Nakamura, Alan M Zaslavsky, Sara L Toomey, Carter R Petty, Maria C Bryant, Alexandra T Geanacopoulos, Ashish K Jha, Mark A Schuster
BACKGROUND AND OBJECTIVE: Lower respiratory infections (LRIs) are among the most common reasons for pediatric hospitalization and among the diagnoses with the highest number of readmissions. Characterizing LRI readmissions would help guide efforts to prevent them. We assessed variation in pediatric LRI readmission rates, risk factors for readmission, and readmission diagnoses. METHODS: We analyzed 2008-2009 Medicaid Analytic eXtract data for patients <18 years of age in 26 states...
August 2017: Pediatrics
https://www.readbyqxmd.com/read/28770121/necrotizing-pneumonia-an-emerging-problem-in-children
#18
REVIEW
I Brent Masters, Alan F Isles, Keith Grimwood
BACKGROUND: In children, necrotizing pneumonia (NP) is an uncommon, severe complication of pneumonia. It is characterized by destruction of the underlying lung parenchyma resulting in multiple small, thin-walled cavities and is often accompanied by empyema and bronchopleural fistulae. REVIEW: NP in children was first reported in children in 1994, and since then there has been a gradual increase in cases, which is partially explained by greater physician awareness and use of contrast computed tomography (CT) scans, and by temporal changes in circulating respiratory pathogens and antibiotic prescribing...
2017: Pneumonia
https://www.readbyqxmd.com/read/28766715/hypertonic-nacl-versus-osmotic-stimuli-distinct-ovlt-neurones-can-sense-the-difference-to-control-sympathetic-outflow-and-blood-pressure
#19
V R Antunes
Despite large fluctuations in salt and water intake, mammals are able to maintain electrolyte concentrations, particularly sodium (Na(+) ) as the major determinant of osmolality of the extracellular fluid (ECF), within narrow physiological limits (∼300 mOsm kg(-1) ). This article is protected by copyright. All rights reserved.
August 1, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28763135/nonlinear-electrokinetic-effects-in-insulator-based-dielectrophoretic-systems
#20
Qianru Wang, Naga Neehar Dingari, Cullen R Buie
Insulator-based dielectrophoresis (iDEP) has emerged as a powerful tool for multiple biomicrofluidic operations, such as cell separation and concentration. The key feature for iDEP systems is the alteration of insulating microchannel geometries to create strong electric field gradients. Under AC electric fields, this strong electric field gradient can affect fluid flow by (at least) two nonlinear electrokinetic phenomena; a) electrothermal flow due to Joule heating and b) induced charge electroosmosis (ICEO) near the microchannel constrictions of small (but finite) permittivity and conductivity...
August 1, 2017: Electrophoresis
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