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Fluids and electrolytes

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https://www.readbyqxmd.com/read/29350713/hyponatremia-and-siadh-a-case-study-for-nursing-consideration
#1
Teri Tasler, Susan D Bruce
The leading cause of hyponatremia in patients with cancer is syndrome of inappropriate antidiuretic hormone secretion (SIADH); this oncologic emergency requires immediate intervention. Left untreated, it can result in increased mortality and morbidity. A sodium level less than 135 meq/L is an electrolyte irregularity and defined as hyponatremia. It is extremely critical that oncology nurses are knowledgeable and able to evaluate and determine when patients are in fluid and electrolyte crisis. Nurses should be aware of the specific cancers and treatments that put patients at risk for developing hyponatremia...
February 1, 2018: Clinical Journal of Oncology Nursing
https://www.readbyqxmd.com/read/29348282/acquired-pyloric-stenosis-resulting-in-hypokalaemic-hyperchloraemic-normal-anion-gap-metabolic-acidosis-persistent-vomiting-in-an-adult-cause-and-effect
#2
Philip Kaye
A 24-year-old woman presented with a history of persistent vomiting for at least 3 months. This resulted in severe dehydration with risk of acute kidney injury. In addition to volume depletion, loss of gastric fluid resulted in a specific metabolic derangement-hypokalaemic, hypochloraemic normal anion gap metabolic alkalosis with a reduced ionised calcium concentration and paradoxical aciduria. These metabolic changes were reflected in her ECG. Investigation demonstrated acquired gastric outflow tract obstruction secondary to a pyloric peptic ulcer...
January 17, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29347259/electro-osmosis-of-nematic-liquid-crystals-under-weak-anchoring-and-second-order-surface-effects
#3
Antarip Poddar, Jayabrata Dhar, Suman Chakraborty
Advent of nematic liquid crystal flows has attracted renewed attention in view of microfluidic transport phenomena. Among various transport processes, electro-osmosis stands as one of the efficient flow actuation mechanisms through narrow confinements. In the present study, we explore the electrically actuated flow of an ordered nematic fluid with ionic inclusions, taking into account the influences from surface-induced elasticity and electrical double layer (EDL) phenomena. Toward this, we devise the coupled flow governing equations from fundamental free-energy analysis, considering the contributions from first- and second-order elastic, dielectric, flexoelectric, charged surface polarization, ionic and entropic energies...
July 2017: Physical Review. E
https://www.readbyqxmd.com/read/29347018/numerical-study-of-enhanced-mixing-in-pressure-driven-flows-in-microchannels-using-a-spatially-periodic-electric-field
#4
T Krishnaveni, T Renganathan, J R Picardo, S Pushpavanam
We propose an innovative mechanism for enhancing mixing in steady pressure driven flow of an electrolytic solution in a straight rectangular microchannel. A transverse electric field is used to generate an electroosmotic flow across the cross-section. The resulting flow field consists of a pair of helical vortices that transport fluid elements along the channel. We show, through numerical simulations, that chaotic advection may be induced by periodically varying the direction of the applied electric field along the channel length...
September 2017: Physical Review. E
https://www.readbyqxmd.com/read/29346912/wedge-wetting-by-electrolyte-solutions
#5
Maximilian Mußotter, Markus Bier
The wetting of a charged wedgelike wall by an electrolyte solution is investigated by means of classical density functional theory. As in other studies on wedge wetting, this geometry is considered as the most simple deviation from a planar substrate, and it serves as a first step toward more complex confinements of fluids. By focusing on fluids containing ions and surface charges, features of real systems are covered that are not accessible within the vast majority of previous theoretical studies concentrating on simple fluids in contact with uncharged wedges...
September 2017: Physical Review. E
https://www.readbyqxmd.com/read/29344107/managing-hyponatremia-in-lung-cancer-latest-evidence-and-clinical-implications
#6
REVIEW
Ilaria Fiordoliva, Tania Meletani, Maria Giuditta Baleani, Silvia Rinaldi, Agnese Savini, Marzia Di Pietro Paolo, Rossana Berardi
Hyponatremia is the most common electrolyte disorder in lung cancer patients. This condition may be related to many causes including incidental medications, concurrent diseases and side effects of antineoplastic treatments or the disease itself. Although not frequently life-threatening, it is usually associated with prolonged hospitalization, delays in scheduled chemotherapy, worsening of patient performance status and quality of life and may also negatively affect treatment response and survival. Most of the available data focus on thoracic tumors, especially small-cell lung cancer (SCLC), where hyponatremia is frequently related to the syndrome of inappropriate secretion of antidiuretic hormone (SIADH)...
November 2017: Therapeutic Advances in Medical Oncology
https://www.readbyqxmd.com/read/29341965/osmotic-shifts-cerebral-edema-and-neurologic-deterioration-in-severe-hepatic-encephalopathy
#7
Eric Michael Liotta, Anna L Romanova, Bryan D Lizza, Laura J Rasmussen-Torvik, Minjee Kim, Brandon Francis, Rajbeer Singh Sangha, Timothy J Carroll, Daniel Ganger, Daniela P Ladner, Andrew M Naidech, James J Paparello, Shyam Prabhakaran, Farzaneh A Sorond, Matthew B Maas
OBJECTIVES: We sought to determine the effect of acute electrolyte and osmolar shifts on brain volume and neurologic function in patients with liver failure and severe hepatic encephalopathy. DESIGN: Retrospective analysis of brain CT scans and clinical data. SETTING: Tertiary care hospital ICUs. PATIENTS: Patients with acute or acute-on-chronic liver failure and severe hepatic encephalopathy. INTERVENTIONS: Clinically indicated CT scans and serum laboratory studies...
February 2018: Critical Care Medicine
https://www.readbyqxmd.com/read/29340799/fully-automated-life-support-an-implementation-and-feasibility-pilot-study-in-healthy-pigs
#8
Wilfried Klingert, Jörg Peter, Christian Thiel, Karolin Thiel, Wolfgang Rosenstiel, Kathrin Klingert, Christian Grasshoff, Alfred Königsrainer, Martin Schenk
BACKGROUND: Automated systems are available in various application areas all over the world for the purpose of reducing workload and increasing safety. However, such support systems that would aid caregivers are still lacking in the medical sector. With respect to workload and safety, especially, the intensive care unit appears to be an important and challenging application field. Whereas many closed-loop subsystems for single applications already exist, no comprehensive system covering multiple therapeutic aspects and interactions is available yet...
January 16, 2018: Intensive Care Medicine Experimental
https://www.readbyqxmd.com/read/29339230/balanced-crystalloids-vs-0-9-saline-for-adult-patients-undergoing-non-renal-surgery-a-meta-analysis
#9
REVIEW
Lili Huang, Xiaoshuang Zhou, Hai Yu
BACKGROUND: Fluid maintenance and resuscitation is an important strategy during major surgeries. There has been a debate on the choice of crystalloids over the past decades. 0.9% saline (normal saline) is more likely to cause hyperchloremic acidosis when compared to balanced crystalloids with low chloride content. Meta-analyses comparing these two kinds of crystalloids have been performed in renal transplantations. We aim to compare the safety of balanced crystalloids to normal saline among adult patients undergoing non-renal surgery...
January 12, 2018: International Journal of Surgery
https://www.readbyqxmd.com/read/29338249/highly-sensitive-and-wearable-in2o3-nanoribbon-transistor-biosensors-with-integrated-on-chip-gate-for-glucose-monitoring-in-body-fluids
#10
Qingzhou Liu, Yihang Liu, Fanqi Wu, Xuan Cao, Zhen Li, Mervat Alharbi, Ahmad N Abbas, Moh R Amer, Chongwu Zhou
Nanoribbon- and nanowire-based field-effect transistor (FET) biosensors have stimulated a lot of interest. However, most FET biosensors were achieved by using bulky Ag/AgCl electrodes or metal wire gates, which have prevented the biosensors from becoming truly wearable. Here, we demonstrate highly sensitive and conformal In2O3 nanoribbon FET biosensors with a fully integrated on-chip gold side gate, which have been laminated onto various surfaces, such as artificial arms and watches, and have enabled glucose detection in various body fluids, such as sweat and saliva...
January 17, 2018: ACS Nano
https://www.readbyqxmd.com/read/29336990/failure-of-intracardiac-pacing-after-fatal-propafenone-overdose-a-case-report
#11
Ivan Zeljković, Nikola Bulj, Matea Kolačević, Vedran Čabrilo, Diana Delić Brkljačić, Šime Manola
BACKGROUND: Propafenone is a sodium-channel blocker, class IC antiarrhythmic drug, frequently used to manage supraventricular dysrhythmias, especially atrial fibrillation. We report a self mono-intoxication with propafenone. CASE REPORT: A 68-year-old woman presented with a decreased level of consciousness, hypotension, and electrocardiogram showing QRS widening with atrial asystole and extreme bradycardia < 20 beats/min. After initial stabilization with transcutaneous pacing, laboratory findings detected normal electrolyte ranges and metabolic acidosis, and her medical history revealed availability of propafenone due to paroxysmal atrial fibrillation and depressive syndrome, which led to the suspicion of intoxication...
January 11, 2018: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29333566/principles-of-management-of-central-nervous-system-infections
#12
REVIEW
Sunit Singhi, Suresh Kumar Angurana
CNS infections in children are medical emergency and are associated with high mortality and morbidity. For diagnosis, a high index of suspicion is required. Clinical assessment should be supplemented by laboratory investigations including CSF Gram stain and cultures, blood culture, PCR on CSF, serological tests, and imaging. Commonly associated life threatening complications include coma, seizure, raised intracranial pressure (ICP), focal deficits, shock, respiratory failure, and fluid and electrolyte abnormalities...
January 15, 2018: Indian Journal of Pediatrics
https://www.readbyqxmd.com/read/29329448/the-prevalence-and-management-of-dehydration-amongst-neonatal-admissions-to-general-paediatric-wards-in-kenya-a-clinical-audit
#13
Samuel Akech, Beatrice Rotich, Mercy Chepkirui, Philip Ayieko, Grace Irimu, Mike English
An audit of randomly selected case records of 810 patients admitted to 13 hospitals between December 2015 and November 2016 was done. Prevalence of dehydration was 19.7% (2293 of 11 636) [95% CI: 17.1-22.6%], range across hospitals was 9.4% to 27.0%. Most cases with dehydration were clinically diagnosed (82 of 153; 53.6%), followed by excessive weight loss (54 of 153; 35.3%) and abnormal urea/electrolytes/creatinine (23 of 153; 15.0%). Documentation of fluids prescribed was poor but, where data were available, Ringers lactate (30 of 153; 19...
January 9, 2018: Journal of Tropical Pediatrics
https://www.readbyqxmd.com/read/29322961/perioperative-strokes-following-combined-coronary-artery-bypass-grafting-and-carotid-endarterectomy-a-nationwide-perspective
#14
REVIEW
Reshmi Udesh, Hannah Cheng, Amol Mehta, Parthasarathy D Thirumala
BACKGROUND: To assess the risk of perioperative stroke on in-hospital morbidity and mortality following combined coronary artery bypass grafting (CABG) and carotid endarterectomy (CEA). MATERIALS AND METHODS: Data from the National Inpatient Sample (NIS) database for all patients who underwent CABG with CEA were identified using ICD-9 codes. Combined procedures were identified as CEA and CABG procedures that happened on the same day. Various preoperative and perioperative risk factors and their association with in-hospital mortality and morbidity were studied...
January 2018: Neurology India
https://www.readbyqxmd.com/read/29321959/daily-voluntary-exercise-enhances-pilocarpine-induced-saliva-secretion-and-aquaporin-1-expression-in-rat-submandibular-glands
#15
Kentaro Matsuzaki, Naotoshi Sugimoto, Masanori Katakura, Eri Sumiyoshi, Toshiko Hara, Michio Hashimoto, Osamu Shido
Saliva-a water-based fluid containing electrolytes, immunoglobulins, and enzymes-has many functions, including the protection and hydration of mucosal structures within the oral cavity and the initiation of digestion. Aquaporins (AQPs) are proteins that act as water channels through membranes. We have previously reported upregulation of the expression levels of AQP 1 and 5 in the submandibular glands (SMGs) in heat-acclimated rats. In this study, we investigated pilocarpine-induced saliva secretion and AQP expression in rats after voluntary exercise...
January 2018: FEBS Open Bio
https://www.readbyqxmd.com/read/29321483/extracellular-total-electrolyte-concentration-imaging-for-electrical-brain-stimulation-ebs
#16
Saurav Z K Sajib, Mun Bae Lee, Hyung Joong Kim, Eung Je Woo, Oh In Kwon
Techniques for electrical brain stimulation (EBS), in which weak electrical stimulation is applied to the brain, have been extensively studied in various therapeutic brain functional applications. The extracellular fluid in the brain is a complex electrolyte that is composed of different types of ions, such as sodium (Na+), potassium (K+), and calcium (Ca+). Abnormal levels of electrolytes can cause a variety of pathological disorders. In this paper, we present a novel technique to visualize the total electrolyte concentration in the extracellular compartment of biological tissues...
January 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29318728/diagnosis-and-management-of-hyponatraemia-in-the-older-patient
#17
REVIEW
Michael Woodward, Peter Gonski, Mathis Grossmann, John Obeid, Ron Scholes, Duncan J Topliss
Hyponatraemia (serum sodium concentration below 135 mmol/L) is the most common electrolyte disturbance and occurs commonly in older people. The causes can be complex to diagnose and treat and many published guidelines do not focus on the issues in an older patient group. Here, we are principally concerned with diagnosis and management of euvolaemic and hypervolaemic hyponatraemia in hospitalised patients over 70 years old. We also aim to increase awareness of hyponatraemia in residential aged care facilities and the community...
January 2018: Internal Medicine Journal
https://www.readbyqxmd.com/read/29310400/clinical-analysis-of-hyperkalemia-after-esophagectomy-a-case-report
#18
Qiang Chen, Wei-Guo Zhang, Shu-Chang Chen
RATIONALE: The occurrence of hyperkalemia after esophagectomy is clinically rare. Patients who underwent esophagectomy often have a serum potassium level due to perioperative reduced intake, fluids loss, consumption and other reasons. These patients often require the artificial administration of potassium. Rapid fluid loss and physiological consumption lead to the deficiency of potassium, even hypokalemia. Patients often require the addition of a large amount of potassium after operation...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29306405/chloride-imbalance-between-serum-and-csf-in-the-acute-phase-of-neuromyelitis-optica
#19
Tetsuya Akaishi, Toshiyuki Takahashi, Ichiro Nakashima
We collected serum-cerebrospinal fluid (CSF)-paired samples during the acute phase of clinical episodes in MS and NMO patients, together with paired samples from non-MS/NMO patients, to compare the quotients of proteins and electrolytes among them. In NMO, the quotient of chloride was significantly higher in the acute phase of optic neuritis and brain lesions, but it was significantly lower in the acute phase of myelitis. Such findings were not observed in MS or in non-MS/NMO cases. With the coexistence of serum anti-AQP4-Ab, chloride imbalance between serum and CSF could be associated with the clinical episodes in NMO...
February 15, 2018: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/29304550/replica-ornstein-zernike-theory-applied-for-studying-the-equilibrium-distribution-of-electrolytes-across-model-membranes
#20
Barbara Hribar-Lee, Miha Luksic
By means of replica Ornstein-Zernike theory (supplemented in few cases by Monte Carlo simulations) we examined the distribution of annealed primitive model +1:-1 electrolyte in mixture with uncharged hard-spheres, or another model +1:-1 or +2:-1 electrolyte inside and outside the quenched vesicles, decorated by a model membrane, and across the membrane phase. We explored the influence of the size and charge of the annealed fluid on the partition equilibrium, as well as the effect of the vesicle size and membrane interaction parameters (repulsive barrier height, attractive depth, and membrane width)...
January 5, 2018: Journal of Physical Chemistry. B
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