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https://www.readbyqxmd.com/read/28398947/acidosis-but-not-alkalosis-affects-anaerobic-metabolism-and-performance-in-a-4-km-time-trial
#1
Carlos Rafaell Correia-Oliveira, João Paulo Lopes-Silva, Romulo Bertuzzi, Glenn K McConell, David John Bishop, Adriano Eduardo Lima-Silva, Maria Augusta Peduti Dal'Molin Kiss
PURPOSE: To determine the effect of pre-exercise metabolic acidosis and alkalosis on power output (PO) and aerobic and anaerobic energy expenditure during a 4-km cycling time trial (TT). METHODS: Eleven recreationally trained cyclists (VO2peak 54.1 ± 9.3 mL·kg·min) performed a 4-km TT 100 min after ingesting in a double-blind matter 0.15 g·kg of body mass of ammonium chloride (NH4Cl, acidosis), 0.3 g·kg of sodium bicarbonate (NaHCO3, alkalosis) or 0.15 g·kg of CaCO3 (placebo)...
April 11, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28393002/hellp-syndrome-in-a-pregnant-patient-with-gitelman-syndrome
#2
Minhyeok Lee, Dong-Il Kim, Kyung-Ho Lee, Jun-Hyun Byun, Jiyong Hwang, Won-Min Hwang, Sung-Ro Yun, Se-Hee Yoon
Gitelman syndrome is characterized by hypokalemia, metabolic alkalosis, hypocalciuria, and hypomagnesemia. The clinical course of Gitelman syndrome in pregnant women remains unclear, but it is thought to be benign. We report here the first Korean case of atypical eclampsia in a 31-year-old who was diagnosed with Gitelman syndrome incidentally during an antenatal screening test. The patient did well during pregnancy despite significant hypokalemia. At 33 weeks' gestation, the patient exhibited eclampsia, hemolysis, elevated liver enzymes, low platelets (HELLP) syndrome, and renal insufficiency without significant hypertension or proteinuria...
March 2017: Kidney Research and Clinical Practice
https://www.readbyqxmd.com/read/28392039/effect-of-arterial-puncture-on-ventilation
#3
Ashima Synghal Sahni, Hemil Gonzalez, Aiman Tulaimat
BACKGROUND: Clinicians frequently assume that during arterial puncture for measuring arterial blood gases patients hyperventilate from pain and anxiety. This assumption leads clinicians to falsely interpret a PaCO2 and pH near the upper limit of normal as a chronic respiratory acidosis corrected by an acute respiratory alkalosis. OBJECTIVE: Determine if participants hyperventilate during arterial puncture from pain and anxiety. METHODS: We recruited participants from a pulmonary function laboratory referred for arterial blood gas measurement...
April 6, 2017: Heart & Lung: the Journal of Critical Care
https://www.readbyqxmd.com/read/28380074/correction-alkalosis-in-critically-ill-patients-with-severe-sepsis-and-septic-shock
#4
(no author information available yet)
[This corrects the article DOI: 10.1371/journal.pone.0168563.].
2017: PloS One
https://www.readbyqxmd.com/read/28351484/hypocapnic-hypothesis-of-leigh-disease
#5
Ewa Pronicka
Leigh syndrome (LS) is a neurogenetic disorder of children caused by mutations in at least 75 genes which impair mitochondrial bioenergetics. The changes have typical localization in basal ganglia and brainstem, and typical histological picture of spongiform appearance, vascular proliferation and gliosis. ATP deprivation, free radicals and lactate accumulation are suspected to be the causes. Hypocapnic hypothesis proposed in the paper questions the energy deprivation as the mechanism of LS. We assume that the primary harmful factor is hypocapnia (decrease in pCO2) and respiratory alkalosis (increase in pH) due to hyperventilation, permanent or in response to stress...
April 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28342684/persistent-pulmonary-hypertension-of-the-newborn
#6
REVIEW
Mamta Fuloria, Judy L Aschner
Failure of the normal circulatory adaptation to extrauterine life results in persistent pulmonary hypertension of the newborn (PPHN). Although this condition is most often secondary to parenchymal lung disease or lung hypoplasia, it may also be idiopathic. PPHN is characterized by elevated pulmonary vascular resistance with resultant right-to-left shunting of blood and hypoxemia. Although the preliminary diagnosis of PPHN is often based on differential cyanosis and labile hypoxemia, the diagnosis is confirmed by echocardiography...
March 23, 2017: Seminars in Fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28327689/unusual-case-of-failure-to-thrive-type-iii-bartter-syndrome
#7
S Agrawal, K Subedi, P Ray, A Rayamajhi
Bartter syndrome Type III is a rare autosomal recessive disorder resulting from an inherited defect in the thick ascending limb of the loop of henle of the nephrons in kidney. The typical clinical manifestations in childhood are failure to thrive and recurrent episodes of vomiting. Typical laboratory findings which help in the diagnosis are hypokalemic metabolic alkalosis, hypomagnesemia and hypercalciuria. We report a case of Type III Bartter syndrome not responding to repeated conventional treatment of failure to thrive...
September 2016: Journal of Nepal Health Research Council
https://www.readbyqxmd.com/read/28325561/a-new-slc12a3-founder-mutation-p-val647met-in-gitelman-s-syndrome-patients-of-roma-ancestry
#8
Helena Gil-Peña, Eliecer Coto, Fernando Santos, Mar Espino, Jose Mª Cea Crespo, Giannis Chantzopoulos, Filadelfia Komianou, Juan Gómez, Belén Alonso, Sara Iglesias, Cyrielle Treard, Rosa Vargas-Poussou
BACKGROUND: Gitelman's syndrome (GS) is an autosomal recessive disorder caused by mutations in the SLC12A3 gene. GS is characterized by hypokalaemic metabolic alkalosis, hypomagnesemia and hypocalciuria. Most of the reported patients of Roma ancestry are homozygous for an SLC12A3 intron 9 frameshifting mutation (c.1180+1G>T). Some forms of Bartter's syndrome result from mutations in the CLNCKB gene and clinically overlap with GS. OBJECTIVES: To characterize a second SLC12A3 mutation in Roma patients negative for the intron 9 variant...
March 18, 2017: Nefrología: Publicación Oficial de la Sociedad Española Nefrologia
https://www.readbyqxmd.com/read/28302238/gitelman-syndrome
#9
Qurat Ul Ain Mustafa, Zujaja Hina Haroon, Aamir Ijaz, Muhammad Tanveer Sajid, Muhammad Ayyub
Gitelman syndrome (GS) is the most frequently inherited renal salt-wasting tubulointerstitial disease. It follows variable but usually asymptomatic benign course. We present a rare case of GS that remained clinical enigma. A 22-year male presented with severe episodic fatigue involving all limbs associated with episodes of sinking, palpitations, salt craving, increased thirst and frequent micturition hampering his routine daily activities. Laboratory workup revealed serum potassium, 2.7 mmol/L, serum magnesium, 0...
March 2017: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28296160/changes-in-serum-bicarbonate-levels-caused-by-acetate-containing-bicarbonate-buffered-hemodialysis-solution-an-observational-prospective-cohort-study
#10
Mandip Panesar, Neal Shah, Sarosh Vaqar, Kaushik Ivaturi, Gregory Gudleski, Mary Muscarella, Judy Lambert, Winnie Su, Brian Murray
Fresenius Medical Care's NaturaLyte dialysate has been associated with increased risk of sudden cardiac death by causing metabolic alkalosis from its acetate content based on retrospective data using pre-dialysis bicarbonate levels only. The study objective was to measure inter/intra-dialytic changes in serum bicarbonate and degree of alkalosis conferred by varying concentrations of NaturaLyte bicarbonate dialysate. Thirty-nine hemodialysis patients were divided into four groups based on prescribed bicarbonate dialysate concentrations; Group 1 (N = 9): 30-32 mEq/L, Group 2 (N = 5): 33-34 mEq/L, Group 3 (N = 10): 35-36 mEq/L, Group 4 (N = 15): 37-40 mEq/L...
March 13, 2017: Therapeutic Apheresis and Dialysis
https://www.readbyqxmd.com/read/28289910/acid-base-disturbances-in-nephrotic-syndrome-analysis-using-the-co2-hco3-method-traditional-boston-model-and-the-physicochemical-method-stewart-model
#11
Tomomichi Kasagi, Hirokazu Imai, Naoto Miura, Keisuke Suzuki, Masabumi Yoshino, Hironobu Nobata, Takuhito Nagai, Shogo Banno
BACKGROUND: The Stewart model for analyzing acid-base disturbances emphasizes serum albumin levels, which are ignored in the traditional Boston model. We compared data derived using the Stewart model to those using the Boston model in patients with nephrotic syndrome. METHODS: Twenty-nine patients with nephrotic syndrome and six patients without urinary protein or acid-base disturbances provided blood and urine samples for analysis that included routine biochemical and arterial blood gas tests, plasma renin activity, and aldosterone...
March 13, 2017: Clinical and Experimental Nephrology
https://www.readbyqxmd.com/read/28288174/poor-phenotype-genotype-association-in-a-large-series-of-patients-with-type-iii-bartter-syndrome
#12
Alejandro García Castaño, Gustavo Pérez de Nanclares, Leire Madariaga, Mireia Aguirre, Álvaro Madrid, Sara Chocrón, Inmaculada Nadal, Mercedes Navarro, Elena Lucas, Julia Fijo, Mar Espino, Zilac Espitaletta, Víctor García Nieto, David Barajas de Frutos, Reyner Loza, Guillem Pintos, Luis Castaño, Gema Ariceta
INTRODUCTION: Type III Bartter syndrome (BS) is an autosomal recessive renal tubule disorder caused by loss-of-function mutations in the CLCNKB gene, which encodes the chloride channel protein ClC-Kb. In this study, we carried out a complete clinical and genetic characterization in a cohort of 30 patients, one of the largest series described. By comparing with other published populations, and considering that 80% of our patients presented the p.Ala204Thr Spanish founder mutation presumably associated with a common phenotype, we aimed to test the hypothesis that allelic differences could explain the wide phenotypic variability observed in patients with type III BS...
2017: PloS One
https://www.readbyqxmd.com/read/28286047/effects-of-early-administration-of-acetazolamide-on-the-duration-of-mechanical-ventilation-in-patients-with-chronic-obstructive-pulmonary-disease-or-obesity-hypoventilation-syndrome-with-metabolic-alkalosis-a-randomized-trial
#13
G Rialp Cervera, J M Raurich Puigdevall, I Morán Chorro, M C Martín Delgado, G Heras la Calle, A Mas Serra, I Vallverdú Perapoch
BACKGROUND: Metabolic alkalosis (MA) inhibits respiratory drive and may delay weaning from mechanical ventilation (MV). MA is common in CO2-retainer patients that need MV. Acetazolamide (ACTZ) decreases serum bicarbonate concentration and stimulates respiratory drive. This study evaluated the effects of ACTZ on the duration of MV in patients with MA and COPD or obesity hypoventilation syndrome (OHS) intubated with acute respiratory failure. METHODS: Multicenter, randomized, controlled, double-blind study, with COPD or OHS patients with MV < 72 h and initial bicarbonate >28 mmol/L and pH > 7...
March 7, 2017: Pulmonary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28280973/determinants-of-curvature-constant-w-of-the-power-duration-relationship-under-normoxia-and-hypoxia-the-effect-of-pre-exercise-alkalosis
#14
Sanjoy K Deb, Lewis A Gough, S Andy Sparks, Lars R McNaughton
PURPOSE: This study investigated the effect of induced alkalosis on the curvature constant (W') of the power-duration relationship under normoxic and hypoxic conditions. METHODS: Eleven trained cyclists (mean ± SD) Age: 32 ± 7.2 years; body mass (bm): 77.0 ± 9.2 kg; VO2peak: 59.2 ± 6.8 ml·kg(-1)·min(-1) completed seven laboratory visits which involved the determination of individual time to peak alkalosis following sodium bicarbonate (NaHCO3) ingestion, an environment specific ramp test (e...
May 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28263087/protein-losing-enteropathy-in-an-infant-with-rotavirus-infection
#15
Adriana Parisi, Alessandro Cafarotti, Roberta Salvatore, Piernicola Pelliccia, Luciana Breda, Francesco Chiarelli
Protein-losing enteropathy (PLE) is a rare gastro-intestinal complication characterised by intestinal loss of proteins with consequent hypoproteinaemia and generalised oedema. Rotavirus infection associated with PLE in children has rarely been reported. A 6-month-old girl presented with diarrhoea, fever and generalised oedema. Total serum proteins were 34 g/L (61-79) and plasma albumin 16.8 g/L (40-50), serum sodium was 126 mmol/L and there was mild metabolic alkalosis (pH 7.46). Stool for alpha-1 antitrypsin was >1...
March 6, 2017: Paediatrics and International Child Health
https://www.readbyqxmd.com/read/28236585/the-importance-of-genetic-counseling-and-genetic-screening-a-case-report-of-a-16-year-old-boy-with-resistant-hypertension-and-severe-hypokalemia
#16
Ze-Min Kuang, Ying Wang, Jia-Jie Wang, Jing-Hua Liu, Rong Zeng, Qi Zhou, Zhen-Qiu Yu, Long Jiang
Liddle's syndrome, an autosomal dominant form of monogenic hypertension, is characterized by salt-sensitive hypertension with early penetrance, hypokalemia, metabolic alkalosis, suppression of plasma rennin activity and aldosterone secretion, and a clear-cut response to epithelial sodium channel blockers but not spironolactone therapy. Here, we describe the case of a 16-year-old boy patient with resistant hypertension (maintain 170-180/100-110 mm Hg after administration four kinds of antiypertensive drugs) and severe hypokalemia...
February 3, 2017: Journal of the American Society of Hypertension: JASH
https://www.readbyqxmd.com/read/28229643/vestpd-as-a-measure-of-ventilatory-acclimatization-to-hypobaric-hypoxia
#17
J A Loeppky, A C Sheard, R M Salgado, C M Mermier
This study compared the ventilation response to an incremental ergometer exercise at two altitudes: 633 mmHg (resident altitude = 1,600 m) and following acute decompression to 455 mmHg (≈4,350 m altitude) in eight male cyclists and runners. At 455 mmHg, the VESTPD at RER <1.0 was significantly lower and the VEBTPS was higher because of higher breathing frequency; at VO2max, both VESTPD and VEBTPS were not significantly different. As percent of VO2max, the VEBTPS was nearly identical and VESTPD was 30% lower throughout the exercise at 455 mmHg...
September 2016: Physiology International
https://www.readbyqxmd.com/read/28229390/the-reproducibility-of-blood-acid-base-responses-in-male-collegiate-athletes-following-individualised-doses-of-sodium-bicarbonate-a-randomised-controlled-crossover-study
#18
Lewis A Gough, Sanjoy K Deb, Andy S Sparks, Lars R McNaughton
BACKGROUND: Current evidence suggests sodium bicarbonate (NaHCO3) should be ingested based upon the individualised alkalotic peak of either blood pH or bicarbonate (HCO3(-)) because of large inter-individual variations (10-180 min). If such a strategy is to be practical, the blood analyte response needs to be reproducible. OBJECTIVE: This study aimed to evaluate the degree of reproducibility of both time to peak (TTP) and absolute change in blood pH, HCO3(-) and sodium (Na(+)) following acute NaHCO3 ingestion...
February 22, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28210501/perioperative-concerns-for-profound-metabolic-alkalosis-during-kidney-transplantation-a-case-report
#19
Jung Ju Choi, Yong Beom Kim, Hong Soon Kim, Kyung Cheon Lee, Youn Yi Jo
INTRODUCTION: Profound metabolic alkalosis is an uncommon consideration for the anesthetic management of kidney transplantation. Serum total carbon dioxide content and complex electrolyte abnormalities might be important diagnostic clues for the presence of metabolic alkalosis in the absence of arterial blood gas analysis. CASE PRESENTATION: A 34-year-old female visited Gachon University Gil Medical Center, Incheon, South Korea during year 2015. She experienced aggravated renal function due to chronic hypokalemia and severe hypochloremic metabolic alkalosis, induced by laxative abuse, and underwent ABO incompatible kidney transplantation...
November 2016: Iranian Red Crescent Medical Journal
https://www.readbyqxmd.com/read/28197045/experiences-with-continuous-venovenous-hemofiltration-using-18mmol-l-predilution-citrate-anticoagulation-and-a-phosphate-containing-replacement-solution
#20
Yuen Henry Jeffrey, Shum Hoi-Ping, Anne Leung Kit Hung, Lam Chung-Ling, Yan Wing-Wa, Lai King-Yiu
CONTEXT: Regional citrate anticoagulation for continuous renal replacement therapy is associated with a longer filter-life, less bleeding events and improved mortality. Problems associated with using Prismocitrate 10/2 solution in continuous renal replacement therapy, include hypomagnesemia, hypophosphatemia and the need for additional bicarbonate infusion. AIMS: This study uses the new Prismocitrate 18/0 solution for improved buffer balance and Phoxilium solution for a more favourable electrolyte profile...
January 2017: Indian Journal of Critical Care Medicine
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