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Sodium osmolality

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https://www.readbyqxmd.com/read/29206647/microvascular-permeability-after-an-acute-and-chronic-salt-load-in-healthy-subjects-a-randomized-open-label-crossover-intervention-study
#1
Nienke M G Rorije, Rik H G Olde Engberink, Youssef Chahid, Naomi van Vlies, Jan P van Straalen, Bert-Jan H van den Born, Hein J Verberne, Liffert Vogt
BACKGROUND: Sodium-induced microcirculatory changes, endothelial surface layer alterations in particular, may play an important role in sodium-mediated blood pressure elevation. However, effects of acute and chronic sodium loading on the endothelial surface layer and microcirculation in humans have not been established. The objective of this study was to assess sodium-induced changes in blood pressure and body weight as primary outcomes and also in microvascular permeability, sublingual microcirculatory dimensions, and urinary glycosaminoglycan excretion in healthy subjects...
December 5, 2017: Anesthesiology
https://www.readbyqxmd.com/read/29187749/hyponatremia-in-patients-receiving-parenteral-nutrition-the-importance-of-correcting-serum-sodium-for-total-proteins-the-role-of-the-composition-of-parenteral-nutrition-in-the-development-of-hyponatremia
#2
Emilia Gómez-Hoyos, Silvia Fernández-Peña, Martín Cuesta, Ana Ortolá, Pilar Matía, Natalia Pérez-Ferre, Daniel De Luis, Alfonso Calle-Pascual, Miguel Ángel Rubio, Isabelle Runkle-De la Vega
BACKGROUND/OBJECTIVES: Hyponatremia is the most common electrolyte disorder, and is associated with high-morbimortality rates. The true prevalence of hyponatremia in patients on parenteral nutrition (PN) is unknown, and the relationship between PN composition and development of hyponatremia has yet to be studied. Hypoproteinemia, a common finding in patients receiving PN, induces an overestimation of serum sodium (SNa) levels, when using indirect electrolyte methodology. Thus, SNa should be corrected for serum total protein levels (TP)...
November 30, 2017: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/29151300/the-effect-of-antidiuretic-hormone-on-urine-and-serum-electrolyte-levelsin-children-with-primary-monosymptomatic-nocturnal-enuresis
#3
(no author information available yet)
Background/aim: The data concerning the effects of desmopressin on water/electrolyte disturbances of children with primary monosymptomatic nocturnal enuresis (PMNE) are limited. In the present study we aimed to evaluate the effect and tolerability of desmopressin on blood and urine electrolytes and osmolality in PMNE.Materials and methods: Thirty-five children with PMNE between the ages of 5 and 15 participated in the study. Patients collected urine during the daytime and acknowledged the night time fluid restriction before starting to use the desmopressin tablets...
November 13, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/29150589/change-in-hydration-indices-associated-with-an-increase-in-total-water-intake-of-more-than-0-5%C3%A2-l-day-sustained-over-4%C3%A2-weeks-in-healthy-young-men-with-initial-total-water-intake-below-2%C3%A2-l-day
#4
Jodi D Stookey, Janice Hamer, David W Killilea
This secondary data analysis addressed gaps in knowledge about effects of chronic water intake. Longitudinal data from the Adapt Study were used to describe effects of prescribing a sustained increase in water intake relative to baseline, for 4 weeks, on multiple indices of total body water (TBW) flux, regulation, distribution, and volume in five healthy, free-living, young men, with mean total water intake initially below 2 L/day. Indices were measured weekly. Within-person fixed effect models tested for significant changes in indices over time and associations between changes in indices...
November 2017: Physiological Reports
https://www.readbyqxmd.com/read/29136710/-clinical-characteristics-of-128-hospitalized-patients-with-syndrome-of-inappropriate-antidiuretics-of-different-etiologies
#5
G Chen, L L Li, J Sun, W J Gu, N Jin, W H Yan, K Chen, J Du, X L Wang, L Zang, Y Pei, Q H Guo, G Q Yang, J M Ba, Z H Lyu, J M Lu, Y M Mu, J T Dou
Objective: To summarize and analyze the clinical features and etiologies in hospitalized patients with syndrome of inappropriate antidiuretics (SIAD) during the past 25 years. Methods: All data of 128 patients with SIAD admitted to Chinese PLA General Hospital since January 1991 to January 2016 were collected. SIAD was diagnosed based on the 1957 criterion. Results: (1) The most frequent causes of increased inappropriate secretion of vasopressin were malignant tumors, lung diseases (e. g. pneumonia), and central nervous system diseases, in which malignant tumors accounted for 38...
November 1, 2017: Zhonghua Nei Ke za Zhi [Chinese Journal of Internal Medicine]
https://www.readbyqxmd.com/read/29130954/effects-of-tolvaptan-addition-to-furosemide-in-normo-and-hyponatremia-patients-with-heart-failure-and-chronic-kidney-disease-stages-g3b-5-a-subanalysis-of-the-k-star-study
#6
Naoto Tominaga, Keisuke Kida, Takayuki Inomata, Naoki Sato, Tohru Izumi, Yoshihiro J Akashi, Yugo Shibagaki
BACKGROUND: Tolvaptan increases free water clearance (aquaresis) and thereby improves hyponatremia. Although hyponatremia on admission is common in patients with congestive heart failure (CHF), little is known regarding the response to tolvaptan in those who also have chronic kidney disease (CKD) with or without hyponatremia. The aim of this subanalysis was to investigate the differences in treatment response between normo- and hyponatremia patients with CHF and CKD stages G3b-5. METHODS: The Kanagawa Aquaresis Investigators Trial of Tolvaptan on HF Patients with Renal Impairment (K-STAR) was a multicenter, open-label, randomized, controlled prospective clinical trial that included 81 Japanese patients with CHF and residual signs of congestion despite oral furosemide treatment (≥40 mg/day)...
2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/29106785/n-terminal-pro-b-type-natriuretic-peptide-in-three-different-mechanisms-of-dysnatremia-onset-after-a-child-s-craniopharyngioma-surgery
#7
(no author information available yet)
Craniopharyngioma, due to its sellar location, can be perioperatively complicated by different types of dysnatremia. We present a rare postoperative onset of a combination of three different mechanisms of dysnatremia with N-terminal pro-B-type Natriuretic Peptide (NT-proBNP) and renal function parameters in a boy with a good outcome after craniopharyngioma surgery: 1/ Central diabetes insipidus (CDI) onset immediately after the operation, hypernatremia with peak serum sodium (SNa) 158 mmol/l) caused by free water polyuria (electrolyte-free water clearance, EWC 0...
October 6, 2017: Neuro Endocrinology Letters
https://www.readbyqxmd.com/read/29095382/recognition-and-management-of-pediatric-salt-toxicity
#8
Eike Blohm, Amy Goldberg, Ann Salerno, Carole Jenny, Edward Boyer, Kavita Babu
OBJECTIVES: Immediate recognition of salt toxicity and aggressive resuscitative measures are critical in the treatment of this lethal poisoning. Despite heroic measures, pediatric deaths due to salt toxicity still occur from irreversible neurological damage. The objective of this article is to review the relevant literature and offer a therapeutic algorithm for the management of pediatric patients presenting with salt toxicity. METHODS: A literature search for cases of salt toxicity was conducted...
October 31, 2017: Pediatric Emergency Care
https://www.readbyqxmd.com/read/29057582/an-exploratory-pilot-study-with-copeptin-as-a-biomarker-for-individualizing-treatment-for-nocturnal-polyuria
#9
Elke Bruneel, An-Sofie Goessaert, Marie-Astrid Denys, Kristian V Juul, Jens P Nørgaard, Karel Everaert
OBJECTIVE: The aim of the present study was to investigate the use of random copeptin concentrations as possible biomarkers for the differential diagnosis of nocturnal polyuria (NP). METHODS: In all, 111 patients with and without nocturia were enrolled in the study. Patients with a neurogenic bladder and/or those who had undergone bladder or urethral surgery were excluded from the study. All patients completed a 72-hour frequency-volume chart and a renal function profile...
October 23, 2017: Lower Urinary Tract Symptoms
https://www.readbyqxmd.com/read/29052786/tolvaptan-promotes-urinary-excretion-of-sodium-and-urea-a-retrospective-cohort-study
#10
Satoshi Minami, Takayuki Hamano, Hirotsugu Iwatani, Masayuki Mizui, Yoshiki Kimura, Yoshitaka Isaka
BACKGROUND: Tolvaptan (TLV) promotes aquaresis; however, little is known about its effect on solute excretion in chronic kidney disease (CKD). METHODS: We retrospectively studied CKD patients with decompensated heart failure (HF) or those with autosomal dominant polycystic kidney disease (ADPKD) receiving TLV. Patients with an increased urine volume of more than twice of daily variance were defined as "responders" in HF. We compared the ability of the urinary osmolality (U-OSM) change and urinary creatinine concentration ([U-Cr]) change to discriminate "responders"...
October 20, 2017: Clinical and Experimental Nephrology
https://www.readbyqxmd.com/read/29017746/mild-water-restriction-with-or-without-urea-for-the-longterm-treatment-of-siadh-can-urine-osmolality-help-the-choice
#11
G Decaux, F Gankam Kengne, B Couturier, W Musch, A Soupart, F Vandergheynst
BACKGROUND: Treatment options for chronic SIADH include water restriction (WR) and urea. The usefulness of urine osmolality to guide the choice of the treatment option is not clearly defined. We hypothesized that urine osmolality can indicate whether treatment with mild water restriction alone could be successful. METHODS: Retrospective Review of clinical and biochemical (blood and urine) data of patients with chronic SIADH treated for at least one year with mild WR (1...
October 7, 2017: European Journal of Internal Medicine
https://www.readbyqxmd.com/read/28954214/changes-in-plasma-aldosterone-and-electrolytes-levels-kidney-epithelial-sodium-channel-enac-and-blood-pressure-in-normotensive-wky-and-hypertensive-shr-rats-following-gonadectomy-and-chronic-testosterone-treatment
#12
Su Yi Loh, Nelli Giribabu, Naguib Salleh
We hypothesized that testosterone-induced increase in blood pressure involve changes in aldosterone levels and expression of epithelial sodium channel (ENaC) in the kidneys. METHODS: Ovariectomized female normotensive Wistar Kyoto (WKY) and Spontaneous hypertensive (SHR) rats were given six weeks treatment with testosterone via subcutaneous silastic implant. The rats were anesthetized and mean arterial pressure (MAP) was measured via direct cannulation of the carotid artery. Animals were sacrificed and kidneys were removed and subjected for α, β and γ-ENaC protein and mRNA expression analyses by Western blotting and Real-time polymerase chain reaction (qPCR), respectively...
September 24, 2017: Steroids
https://www.readbyqxmd.com/read/28924482/atypical-presentation-of-central-pontine-myelinolysis-in-hyperglycemia
#13
Swapna Talluri, Raghu Charumathi, Muhammad Khan, Kerri Kissell
Central pontine myelinolysis (CPM) usually occurs with rapid correction of severe chronic hyponatremia. Despite the pronounced fluctuations in serum osmolality, CPM is rarely seen in diabetics. This is a case report of CPM associated with hyperglycemia. A 45-year-old non-smoking and non-alcoholic African American male with past medical history of type 2 diabetes, hypertension, stage V chronic kidney disease and hypothyroidism presented with a two-week history of intermittent episodes of gait imbalance, slurred speech and inappropriate laughter...
2017: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/28892600/the-suspect-siadh
#14
Kristen Tee, Jerry Dang
BACKGROUND: Hyponatraemia is one of the most commonly encountered electrolyte abnormalities in general practice. Syndrome of inappropriate antidiuretic hormone secretion (SIADH) is an important but under-recognised cause. OBJECTIVE: This article explores the presentation, investigation, diagnosis and management of SIADH. DISCUSSION: SIADH can occur secondary to medications, malignancy, pulmonary disease, or any disorder involving the central nervous system...
September 2017: Australian Family Physician
https://www.readbyqxmd.com/read/28862988/feto-maternal-osmotic-balance-at-term-a-prospective-observational-study
#15
Vibeke Moen, Lars Brudin, Ivar Tjernberg, Mats Rundgren, Lars Irestedt
OBJECTIVE: We performed the present study to investigate the feto-maternal osmotic relationship at term with the hypothesis that, in contrast to the literature, maternal plasma osmolality is lower than fetal levels. In a previous study, we found that maternal plasma sodium at delivery was consistently lower than the sodium in the umbilical artery. Our aim was to corroborate these results with analysis of osmolality. METHODS: Blood was sampled from 30 women immediately before cesarean section and from the umbilical artery and vein before cord clamping and osmolality, sodium and albumin were analyzed...
June 6, 2017: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/28847143/description-of-three-female-24-h-ultra-endurance-race-winners-in-various-weather-conditions-and-disciplines
#16
Daniela Chlíbková, Thomas Rosemann, Beat Knechtle, Pantelis T. Nikolaidis, Alena Žákovská, Karl Sudi
A The incidence of exercise-associated hyponatremia (EAH) is higher in women than in men. We present three cases of a very mild post-race EAH in female winners of three 24-h ultra races in various weather conditions and disciplines with post-race plasma sodium [Na⁺] levels of 134 mM (Case 1), 133 mM (Case 2) and 134 mM (Case 3). Moreover, Case 1 and Case 2 showed elevated creatine kinase concentrations of >10,000 U/l with an absence of renal function abnormality. The common characteristics were female sex, veteran recreational category, long race experience in the particular sports discipline, excellent race performance, similar total weekly training hours and the presence of luteal phase of the menstrual cycle during the race...
August 31, 2017: Chinese Journal of Physiology
https://www.readbyqxmd.com/read/28842583/responses-of-renal-hemodynamics-and-tubular-functions-to-acute-sodium-glucose-cotransporter-2-inhibitor-administration-in-non-diabetic-anesthetized-rats
#17
Tuba M Ansary, Yoshihide Fujisawa, Asadur Rahman, Daisuke Nakano, Hirofumi Hitomi, Hideki Kobara, Tsutomu Masaki, Jens M Titze, Kento Kitada, Akira Nishiyama
The aim of this study is to examine the effects of acute administration of luseogliflozin, the sodium-glucose cotransporter 2 (SGLT2) inhibitor, on renal hemodynamics and tubular functions in anesthetized non-diabetic Sprague Dawley (SD) rats and 5/6 nephrectomized (Nx) SD rats. Renal blood flow (RBF), mean arterial pressure (MAP), and heart rate (HR) were continuously measured and urine was collected directly from the left ureter. Intraperitoneal injection of luseogliflozin (0.9 mg kg(-1)) did not change MAP, HR, RBF, or creatinine clearance (CrCl) in SD rats (n = 7)...
August 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28834962/artificial-syndrome-of-inappropriate-antidiuresis-model-as-potential-use-for-diagnostic-and-therapeutic-strategies
#18
Julie Refardt, Bettina Winzeler, Fabian Meienberg, Mirjam Christ-Crain
Hyponatremia is the most frequent electrolyte disorder with the syndrome of inappropriate antidiuresis (SIADH) being its predominant cause. Physiological studies in patients with SIADH are difficult to interpret due to usually several comorbidities and polymedication. Therefore, a SIADH model in healthy volunteers would be very helpful to allow insight in this complex disease and to test new therapeutic approaches. The aim of the study was to create a SIADH model with evaluation of subsequent physiological changes...
September 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/28811748/salivary-diagnostic-markers-in-males-and-females-during-rest-and-exercise
#19
Kay Rutherfurd-Markwick, Carlene Starck, Deborah K Dulson, Ajmol Ali
BACKGROUND: Saliva is a useful diagnostic tool for analysis in sports, exercise and nutrition research, as collection is easy and non-invasive and it contains a large number of analytes affected by a range of physiological and pathological stressors and conditions. This study examined key salivary electrolytes and stress and immune markers in males and females at rest and during exercise. METHODS: Unstimulated whole saliva from 20 healthy, recreationally active participants (8 males and 12 females) was analysed for flow rate, osmolality, sodium (Na(+)), potassium (K(+)), chloride (Cl(-)), secretory immunoglobulin A (SIgA), α-amylase activity and cortisol during both rest and moderate intensity (70% peak power) cycling exercise in a randomised crossover design...
2017: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/28783866/hematologic-and-plasma-chemistry-ris-for-cultured-striped-catfish-pangasius-hypophthalmus-in-recirculating-aquaculture-systems
#20
Oscar A Galagarza, David D Kuhn, Stephen A Smith, Terry C Hrubec
BACKGROUND: Striped catfish (Pangasius hypophthalmus) is a valuable aquaculture fish species produced primarily in Southeast Asia. In the United States, it is bred as an ornamental species. Striped catfish has high productivity and great demand in numerous countries around the world, yet little is known about its normal physiology. OBJECTIVES: The objective of this study was to establish hematologic and blood chemistry RIs for healthy juvenile Striped catfish. METHODS: Blood samples were collected from 70 Striped catfish raised in recirculating aquaculture systems...
August 7, 2017: Veterinary Clinical Pathology
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