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Acid base

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36 papers 25 to 100 followers
By M KKhan Pediatric Intensivist
https://www.readbyqxmd.com/read/25909152/using-phosphate-supplementation-to-reverse-hypophosphatemia-and-phosphate-depletion-in-neurological-disease-and-disturbance
#1
REVIEW
Lena Håglin
Hypophosphatemia (HP) with or without intracellular depletion of inorganic phosphate (Pi) and adenosine triphosphate has been associated with central and peripheral nervous system complications and can be observed in various diseases and conditions related to respiratory alkalosis, alcoholism (alcohol withdrawal), diabetic ketoacidosis, malnutrition, obesity, and parenteral and enteral nutrition. In addition, HP may explain serious muscular, neurological, and haematological disorders and may cause peripheral neuropathy with paresthesias and metabolic encephalopathy, resulting in confusion and seizures...
June 2016: Nutritional Neuroscience
https://www.readbyqxmd.com/read/28114143/electrolyte-and-acid-base-disorders-in-chronic-kidney-disease-and-end-stage-kidney-failure
#2
REVIEW
Tsering Dhondup, Qi Qian
The kidneys play a pivotal role in the regulation of electrolyte and acid-base balance. With progressive loss of kidney function, derangements in electrolytes and acid-base inevitably occur and contribute to poor patient outcomes. As chronic kidney disease (CKD) has become a worldwide epidemic, medical providers are increasingly confronted with such problems. Adequate diagnosis and treatment will minimize complications and can potentially be lifesaving. In this review, we discuss the current understanding of the disease process, clinical presentation, diagnosis and treatment strategies, integrating up-to-date knowledge in the field...
2017: Blood Purification
https://www.readbyqxmd.com/read/28345066/correlation-of-central-venous-pressure-with-venous-blood-gas-analysis-parameters-a-diagnostic-study
#3
Sima Rahim-Taleghani, Alireza Fatemi, Mostafa Alavi Moghaddam, Majid Shojaee, Abdelrahman Ibrahim Abushouk, Mohammad Mehdi Forouzanfar, Alireza Baratloo
OBJECTIVE: This study was conducted to assess the correlation between central venous pressure (CVP) and venous blood gas (VBG) analysis parameters, to facilitate management of severe sepsis and septic shock in emergency department. MATERIAL AND METHODS: This diagnostic study was conducted from January 2014 until June 2015 in three major educational medical centers, Tehran, Iran. For patients selected with diagnosis of septic shock, peripheral blood sample was taken for testing the VBG parameters and the anion gap (AG) was calculated...
March 2017: Turkish Journal of Emergency Medicine
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
#4
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/25830425/molecular-physiology-of-water-balance
#5
REVIEW
Mark A Knepper, Tae-Hwan Kwon, Soren Nielsen
New England Journal of Medicine, Volume 372, Issue 14, Page 1349-1358, April 2015.
April 2, 2015: New England Journal of Medicine
https://www.readbyqxmd.com/read/28149822/a-profile-of-metabolic-acidosis-in-patients-with-sepsis-in-an-intensive-care-unit-setting
#6
Kartik Ganesh, R N Sharma, Jaicob Varghese, M G K Pillai
CONTEXT: Metabolic acidosis is frequently found in patients with severe sepsis. An understanding of types of acidosis in sepsis and their evolution over the course of treatment may give us insight into the behavior of acid-base balance in these patients. AIMS: To describe at Intensive Care Unit (ICU) admission and over the first 5 days the composition of metabolic acidosis in patients with sepsis and to evaluate and compare acidosis patterns in survivors and nonsurvivors...
October 2016: International Journal of Critical Illness and Injury Science
https://www.readbyqxmd.com/read/25651248/acid-base-problems-in-diabetic-ketoacidosis
#7
REVIEW
Kamel S Kamel, Mitchell L Halperin
New England Journal of Medicine, Volume 372, Issue 6, Page 546-554, February 2015.
February 5, 2015: New England Journal of Medicine
https://www.readbyqxmd.com/read/25494270/lactic-acidosis
#8
REVIEW
Jeffrey A Kraut, Nicolaos E Madias
New England Journal of Medicine, Volume 371, Issue 24, Page 2309-2319, December 2014.
December 11, 2014: New England Journal of Medicine
https://www.readbyqxmd.com/read/26154934/association-of-hyperchloremia-with-hospital-mortality-in-critically-ill-septic-patients
#9
Javier A Neyra, Fabrizio Canepa-Escaro, Xilong Li, John Manllo, Beverley Adams-Huet, Jerry Yee, Lenar Yessayan
OBJECTIVES: Hyperchloremia is frequently observed in critically ill patients in the ICU. Our study aimed to examine the association of serum chloride (Cl) levels with hospital mortality in septic ICU patients. DESIGN: Retrospective cohort study. SETTING: Urban academic medical center ICU. PATIENTS: ICU adult patients with severe sepsis or septic shock who had Cl measured on ICU admission were included. Those with baseline estimated glomerular filtration rate less than 15 mL/min/1...
September 2015: Critical Care Medicine
https://www.readbyqxmd.com/read/26776539/approach-to-the-treatment-of-chronic-metabolic-acidosis-in-ckd
#10
Kalani L Raphael
Chronic metabolic acidosis is not uncommon in patients with chronic kidney disease (CKD). Clinical practice guidelines suggest that clinicians administer alkali to maintain serum bicarbonate level at a minimum of 22 mEq/L to prevent the effects of acidosis on bone demineralization and protein catabolism. Small interventional studies support the notion that correcting acidosis slows CKD progression as well. Furthermore, alkaline therapy in persons with CKD and normal bicarbonate levels may also preserve kidney function...
April 2016: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/27140683/stewart-acid-base-a-simplified-bedside-approach
#11
David A Story
No abstract text is available yet for this article.
August 2016: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28145212/-when-is-a-venous-blood-gas-analysis-sufficient-in-the-emergency-department
#12
J A J M van Exsel, S O Simons, C Kramers, Y F Heijdra
Blood gas analysis plays an important role in the initial assessment of a patient in the emergency ward. We present three different patient cases to illustrate when to opt for a venous or an arterial blood gas analysis. Arterial punctures are more painful and carry a higher risk of complications compared to venous punctures. It is possible to use a venous blood gas to screen for acute acid/base disturbances. Ventilatory compensation or anion gap cannot be calculated reliably with a venous blood gas. On the other hand, the diagnosis diabetic keto-acidosis can be made with a venous blood gas; this mode of sampling can also be used for lactate measurement at the emergency department as an independent prognostic marker for mortality...
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/28134396/-metabolic-acidosis
#13
Giuseppe Regolisti, Filippo Fani, Riccardo Antoniotti, Giuseppe Castellano, Elena Cremaschi, Paolo Greco, Elisabetta Parenti, Santo Morabito, Alice Sabatino, Enrico Fiaccadori
Metabolic acidosis is frequently observed in clinical practice, especially among critically ill patients and/or in the course of renal failure. Complex mechanisms are involved, in most cases identifiable by medical history, pathophysiology-based diagnostic reasoning and measure of some key acid-base parameters that are easily available or calculable. On this basis the bedside differential diagnosis of metabolic acidosis should be started from the identification of the two main subtypes of metabolic acidosis: the high anion gap metabolic acidosis and the normal anion gap (or hyperchloremic) metabolic acidosis...
November 2016: Giornale Italiano di Nefrologia: Organo Ufficiale Della Società Italiana di Nefrologia
https://www.readbyqxmd.com/read/28029394/non-anion-gap-metabolic-acidosis-a-clinical-approach%C3%A2-to%C3%A2-evaluation
#14
Mandana Rastegar, Glenn T Nagami
Acid-base disturbances can result from kidney or nonkidney disorders. We present a case of high-volume ileostomy output causing large bicarbonate losses and resulting in a non-anion gap metabolic acidosis. Non-anion gap metabolic acidosis can present as a form of either acute or chronic metabolic acidosis. A complete clinical history and physical examination are critical initial steps to begin the evaluation process, followed by measuring serum electrolytes with a focus on potassium level, blood gas, urine pH, and either direct or indirect urine ammonium concentration...
October 28, 2016: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/27522622/lactic-acidosis-an-update
#15
REVIEW
Jansen Seheult, Gerard Fitzpatrick, Gerard Boran
Lactate is one of the most crucial intermediates in carbohydrate and nonessential amino acid metabolism. The complexity of cellular interactions and metabolism means that lactate can be considered a waste product for one cell but a useful substrate for another. The presence of elevated lactate levels in critically ill patients has important implications for morbidity and mortality. In this review, we provide a brief outline of the metabolism of lactate, the pathophysiology of lactic acidosis, the clinical significance of D-lactate, the role of lactate measurement in acutely ill patients, the methods used to measure lactate in blood or plasma and some of the methodological issues related to interferences in these assays, especially in the case of ethylene glycol poisoning...
March 1, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/25669331/the-assessment-of-acid-base-analysis-comparison-of-the-traditional-and-the-modern-approaches
#16
REVIEW
Jasna Todorović, Jelena Nešovic-Ostojić, Aleksandar Milovanović, Predrag Brkić, Mihailo Ille, Dušan Čemerikić
Three distinct approaches are currently used in assessing acid-base disorders: the traditional - physiological or bicarbonate-centered approach, the base-excess approach, and the "modern" physicochemical approach proposed by Peter Stewart, which uses the strong ion difference (particularly the sodium chloride difference) and the concentration of nonvolatile weak acids (particularly albumin) and partial pressure of carbon dioxide (pCO(2)) as independent variables in the assessment of acid-base status. The traditional approach developed from the pioneering work of Henderson and Hasselbalch and the base-excess are still most widely used in clinical practice, even though there are a number of problems identified with this approach...
February 2015: Medicinski Glasnik
https://www.readbyqxmd.com/read/27229644/management-of-acute-kidney-injury-and-acid-base-balance-in-the-septic-patient
#17
REVIEW
Paul D Weyker, Xosé L Pérez, Kathleen D Liu
Acute kidney injury (AKI) is an abrupt decrease in kidney function that takes place over hours to days. Sepsis is the leading cause of AKI and portends a particularly high morbidity and mortality, although the severity may vary from a transient rise in serum creatinine to end-stage renal disease. With regard to acid-base management in septic AKI, caution should be used with hyperchloremic crystalloid solutions, and dialysis is often used in the setting of severe acidosis. In the future, biomarkers may help clinicians identify AKI earlier and allow for potential interventions before the development of severe AKI...
June 2016: Clinics in Chest Medicine
https://www.readbyqxmd.com/read/26410149/understanding-acid-base-disorders
#18
REVIEW
Hernando Gomez, John A Kellum
The concentration of hydrogen ions is regulated in biologic solutions. There are currently 3 recognized approaches to assess changes in acid base status. First is the traditional Henderson-Hasselbalch approach, also called the physiologic approach, which uses the relationship between HCO3(-) and Pco2; the second is the standard base excess approach based on the Van Slyke equation. The third approach is the quantitative or Stewart approach, which uses the strong ion difference and the total weak acids. This article explores the origins of the current concepts framing the existing methods to analyze acid base balance...
October 2015: Critical Care Clinics
https://www.readbyqxmd.com/read/18289237/metabolic-acidosis-in-the-critically-ill-part-1-classification-and-pathophysiology
#19
REVIEW
C G Morris, J Low
Metabolic acidaemia (pH < 7.35 not primarily related to hypoventilation) is common amongst the critically ill and it is essential that clinicians caring for such patients have an understanding of the common causes. The exclusive elimination routes of volatile (carbon dioxide), organic (lactic and ketone) and inorganic (phosphate and sulphate) acids mean compensation for a defect in any one is limited and requires separate provision during critical illness. We discuss the models available to diagnose metabolic acidosis including CO2/HCO3(-) and physical chemistry-derived (Stewart or Fencl-Stewart) approaches, but we propose that the base excess and anion gap, corrected for hypoalbuminaemia and iatrogenic hyperchloraemia, remain most appropriate for clinical usage...
March 2008: Anaesthesia
https://www.readbyqxmd.com/read/19812535/assessing-acid-base-disorders
#20
REVIEW
Horacio J Adrogué, F John Gennari, John H Galla, Nicolaos E Madias
Effective management of acid-base disorders depends on accurate diagnosis. Three distinct approaches are currently used in assessing acid-base disorders: the physiological approach, the base-excess approach, and the physicochemical approach. There are considerable differences among the three approaches. In this review, we first describe the conceptual framework of each approach, and comment on its attributes and drawbacks. We then highlight the application of each approach to patient care. We conclude with a brief synthesis and our recommendations for choosing an approach...
December 2009: Kidney International
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