Search

Despite the success of the treatment of diabetes mellitus, the incidence of diabetic ketoacidosis in recent years has not decreased. Its clinical manifestations Dreshfeld first described in 1886. Insulin began to be used in 1922. Mortality of this complication was 100 %. Widespread implementation of insulin therapy into the clinical practice reduced mortality by 30 %, and with improvement of treatment, including infusion therapy, there was a further reduction. The level of mortality of patients with diabetic ketoacidosis remains high (about 5 % in specialized centers). Prediction of the disease much worsens with age, in the development of coma and hypotension. The prevalence of diabetes mellitus is growing rapidly and currently ranges from 20 to 50 % of new-onset disease in young people. Violations of electrolytes are frequent in patients with this disease and may be the result of altered distribution of electrolytes associated with hyperglycemia-induced osmotic fluid shifts or general shortages caused by osmotic diuresis. Complications from damage to the target organs and therapies used in the treatment of diabetes can also contribute to electrolyte disturbances. We highlight the ways, in which specific electrolytes may be influenced by dysregulation in glucose homeostasis. High or normal plasma sodium concentration in the presence of hyperglycemia indicates a clinically significant deficit of the total body fluid. Sodium correction in patients with glycemia helps to evaluate shortage of sodium and water, and ensure adequate assessment required for tonicity during the course of rehydration therapy. Because children with diabetic ketoacidosis are at particularly high risk of such terrible complications, as swelling of the brain, then to some extent hypernatremia is acceptable during treatment to minimize this complication. Insulin deficiency, which often occurs in type 1 diabetes mellitus, is an important factor of potassium output from the cells. Changes in potassium level, caused by metabolic acidosis, are more significant in mineral acidosis (hyperchloremic, non-anion gap acidosis) than in the organic acidosis (large anion gap acidosis), which is present in diabetic ketoacidosis. In diabetic patients receiving non-selective β-blockers, increased adrenergic activity can exacerbate hyperkalemia, because unopposed α-receptor stimulation, promotes the release of potassium from the cells. Ketoacidosis occurs when the rate, at which hepatic ketoacid is generated, exceeds peripheral utilization and the concentration of ketoacid in the blood increases. Normalization of acid-base balance is made within a few days, as the correction of bicarbonate deficit occurs through its regeneration by kidneys. Patients with primary kidney diabetic ketoacidosis are not involved (with their normal function). Kidney compensate by higher ammonia discharge. Urinary osmolarity gap is measured in order to find out whether there is a corresponding increase in the excretion of ammonia, which leads to violations in acid-base status. Low urinary osmolarity gap in patients with persistent hyperchloremic acidosis provides leads to tubular dysfunction. Despite recent advances that allowed direct assessment of the levels of β-hydroxybutyrate, determining the concentration of ketone bodies often can not fully explain the increase in anion gap and in many patients may contribute to hyperlactatemia. Lactate level may be increased in response to increased adrenergic activity, even in the absence of tissue hypoperfusion. Chronic hyperglycemia leads to the development of «carbonyl stress» and accumulation of toxic dicarbonyl compounds, such as methyl glyoxal, etc. Epidemiological studies suggest that low magnesium intake is associated with increased risk of diabetes, while higher magnesium intake is associated with lower risk of developing diabetes. In patients with diabetic ketoacidosis, osmotic diuresis due to poor glycemic control leads to renal loss of magnesium. Hypomagnesemia can cause hypocalcemia, because magnesium deficiency may lead to lower parathyroid hormone release. Randomized studies of phosphate therapy in patients with diabetic ketoacidosis did not establish that this therapy provides clinical benefit. The dysregulation of glucose homeostasis leads to many direct and indirect effects on electrolyte and acid-base balance. Since the high prevalence of diabetes ensures that clinicians of every medical specialty will interact with these patients, familiarity with related electrolyte abnormalities is important.

Over the past fifteen years, the number of urgent laparotomy is 36–58 % and is characterized by a mortality of 30–80 %. One of the main causes of this is hypovolemia, which causes hemodynamic disorders, tissue hypoxia and the development of multiple organ failure. The main method of its treatment is to fill the circulating blood volume deficiency, where the first choice drugs are crystalloids. It is easy to predict the effects of crystalloid solutions using the physico-chemical model of Stewart’s acid-alkaline equilibrium. Physiologically, all substances in the body are in a dissolved state. Enhancement or weakening of the dissociation of biological aqueous solutions regulate the dependent (H+, HCO3–) and independent (partial pressure of carbon dioxide (pCO2), strong ion difference (SID), total weak acid concentration (Atot)) variables. The regulation of the body’s aqueous media is subject to the three laws of electroneutrality, the equilibrium of dissociation and mass conservation. Based on the Stewart model, electrolyte disturbances can lead to a change in SID and Atot, which forms metabolic acidosis and alkalosis. The composition of cations in a balanced crystalloid solution should correspond to their physiological concentration in the plasma. In this case, the preservation of the physiological concentration of such a strong anion as Cl– in a crystalloid solution is possible only with an increase in the concentration of organic ions. Organic ions are lactate (lactic acid); acetate (acetic acid); malate (malic acid); gluconate (glucuronic acid); citrate (citric acid).These organic ions are moderately strong organic acids and belong to strong electrolytes. In the literature, organic ions are called donors of reserve alkalinity HCO3–. To date, evidence-based studies do not recommend the use of lactate because of: an increase in oxygen consumption during metabolism in the liver, which aggravates tissue hypoxia in conditions of initial oxygen deficiency; threat of intestinal cerebral edema and coagulopathy with excessive concentration of lactate; contraindications to use in shock, accompanied by lactic acidosis and liver failure. Acetate: rapidly stabilizes acid-alkaline disorders due to its rapid metabolism; can be used for violations of the liver; provides minimum oxygen consumption in the process of correction of metabolic acidosis; is an antihypoxant (representing the energy substrate of the Krebs cycle). Malate — can be used for violations of the liver; an antihypoxant (represen­ting the energy substrate of the Krebs cycle); has a detoxification and antioxidant effect. For safe clinical use of crystalloid solutions in patients with urgent abdominal cavity pathology, it is necessary to know: intravenous infusion of solutions causes a “mixing phenomenon” of two different fluids — infusion solution and plasma, which differ from each other in the values of SID and Atot. The main characteristic of the infusion solution is its SIDinf. Before starting the infusion, it is necessary to clearly understand the SID and Atot of the solution used. The total infusion volume changes the SID and Atot of the plasma, with the subsequent effect on the plasma pH. During the infusion therapy, the plasma values of SID and Atot will tend to subjugate SIDinf and Atot of the injected fluid. Crystalloid solutions do not contain albumins or phosphates, therefore, Atot of any crystalloid solution is 0. The characteristics of a balanced crystalloid solution are: SIDinf = 24 mEqL–1; compliance of the electrolyte content with their plasma concentration; the presence in the composition of organic ions, preventing an increase in the concentration of Cl– in the infusion solution and being donors of reserve alkalinity. According to the criteria for the ba­lance of crystalloid solutions, we distinguish: unbalanced crystalloid solutions (0.9% NaCl solution); partially balanced crystalloid solutions (Ringer’s lactate and Hartmann’s solutions); fully balanced solutions (plasmalyte, plasmalyte A, sterofundin, sterofundin ISO). The use of unbalanced solutions (0.9% NaCl solution) is dangerous due to the development of hyperchloremic acidosis. The use of partially balanced crystalloid solutions (Ringer’s lactate and Hartmann’s solutions) can form or aggravate lactate acidosis in conditions of tissue hypoxia and/or liver dysfunction. Infusion of balanced solutions — plasmalyte, plasmalyte A, sterofundin allows you to quickly adjust metabolic acidosis, but requires mandatory laboratory monitoring of the parameters of acid-base balance because of the threat of metabolic alkalosis. Introduction of a balanced solution sterofundin ISO has the highest safety profile, it enables to clinically apply the solution “blindly”.

Background Normal saline solution (NSS) has been the fluid of choice for renal transplant patients, but it can lead to hyperchloremic acidosis and hyperkalemia. This study was performed to compare the safety profile of low-chloride solutions with that of NSS in renal transplant patients. Methods We conducted a systemic review search on PubMed, Embase, and the Central Cochrane Registry. Randomized clinical trials (RCTs) and matched cohort studies involving NSS as the control arm and low-chloride solutions as an intervention arm were chosen. The standardized mean difference for continuous variables, the odds ratio (OR) for discrete variables, and a 95% confidence interval (CI) for effect sizes were used. A p-value of

Metabolic acidosis is a process caused by a decrease in strong ion difference (SID) or an increase in weak acids. Acute metabolic acidosis is well-recognized in the intensive care unit (ICU). A recent epidemiological study revealed that the hospital mortality of patients with moderate or severe metabolic acidosis (pH < 7.3 and base excess

OBJECTIVE Fluid replacement to correct dehydration, acidosis, and electrolyte abnormalities is the cornerstone of treatment for diabetic ketoacidosis (DKA), but little is known about optimal fluid infusion rates and electrolyte content. The objective of this study was to evaluate whether different fluid protocols affect the rate of normalization of biochemical derangements during DKA treatment. RESEARCH DESIGN AND METHODS The current analysis involved moderate or severe DKA episodes (n = 714) in children age RESULTS The rate of change of pH did not differ by treatment arm, but Pco2 increased more rapidly in the fast versus slow fluid infusion arms during the initial 4 h of treatment. The anion gap also decreased more rapidly in the fast versus slow infusion arms during the initial 4 and 8 h. Glucose-corrected sodium levels remained stable in patients assigned to 0.90% saline but decreased in those assigned to 0.45% saline at 4 and 8 h. Potassium levels decreased, while chloride levels increased more rapidly with 0.90% versus 0.45% saline. Hyperchloremic acidosis occurred more frequently in patients in the fast arms (46.1%) versus the slow arms (35.2%). CONCLUSIONS In children treated for DKA, faster fluid administration rates led to a more rapid normalization of anion gap and Pco2 than slower fluid infusion rates but were associated with an increased frequency of hyperchloremic acidosis.

Many clinical conditions, such as diabetes, hypoxia, chronic renal failure, cancer, severe trauma, and sepsis are accompanied by acidosis. The aim of the study was to study the changes in proteolytic activity of blood and tissues under conditions of chronic experimental non-gaseous acidosis and alkalosis, and comparison of them with the previously obtained indicators of the pituitary-adrenal system in chronic non-gaseous acidosis and alkalosis. Material and methods. The experiments were carried out on 60 intact white outbred male rats weighing 120-180 g, which were kept on a balanced diet of vivarium.Chronic non-gaseous hyperchloremic acidosis was simulated by daily intragastric administration with a probe for 30 days 20 mmol/kg NH4CL, and chronic non-gaseous alkalosis — 30 mmol/kg NaHCO3. The control animals were injected with the same amount of tap water. Euthanasia of animals was performed under light ether anesthesia by decapitation. Stabilization of blood was carried out with 3.8% sodium citrate solution. Results. Lysis of azoalbumin (breakdown of low molecular weight proteins), lysis of azocasein (breakdown of high molecular weight proteins) and lysis of azocol (lysis of collagen) in chronic non-gaseous alkalosis are almost no different from normal in the serum. However, in chronic non-gaseous acidosis, the lysis of azoalbumin increases in 3.6 times (control — 1.635±0.717 E440/h/ml, experiment — 5.985±0.812 E440/h/ml, p

Diabetic ketoacidosis (DKA) frequently requires emergency admission. The anion gap approach is conventionally used for the diagnosis and documenting the resolution of acidosis during treatment. However, it fails to detect hyperchloremic acidosis during the resolution and may result in the prolongation of treatment. To determine the role of the Stewart approach of acid-base disorder during DKA management for the prediction of an earlier resolution. A prospective comparative study was conducted between January 2017 and December 2017 at a single academic hospital in north India. Patients aged above 12 years with a diagnosis of DKA were randomly divided into two groups—the conventional group and the Stewart group, according to the approach used for DKA resolution. The primary outcome was the time duration required for resolution. The secondary outcomes were the therapeutic requirement of intravenous fluid, insulin, and potassium, Acute Physiology and Chronic Health Evaluation II (APACHE II) score at the time of resolution, and hospital stay. Forty-four DKA patients were equally distributed in the two groups with comparable baseline parameters. The Stewart group had early resolution of DKA (mean, 32.4±17.5 h versus 41.7±19.6 h; p value

In this study we evaluated the effects of the prepartum anionic diet on the electrolyte balance and calcemia of high producing dairy cows in the first days of lactation, and investigated the impact on the frequency of subclinical hypocalcemia (SCH). Sixty healthy Holstein cows, producing 30 kg of milk/day, handled in intensive system (compost barn), were distributed in groups (n=15) according to lactation order: first, second, third, and fourth to sixth. In the last three weeks before calving they received a diet with negative DCAD (-6mEq/100g DM) and high chloride content. After calving, they received a diet with positive DCAD (18mEq/100g DM). Urine pH was measured before calving. Serum Na+, Cl-, K+, and total Ca concentrations, and the strong ion difference (SID3) were determined in samples taken soon after calving (0h), 24, 48, 72 and 96h after. The frequencies of SCH were determined considering the critical value of 2.125mmol/L (8.5mg/dL). Two-way repeated measures ANOVA and chi-square test were used for comparisons. The cows eliminated acidic urine before calving. Na+, K+, Cl-, and SID3 values did not differ between groups. Na+ and K+ did not vary between days; Cl- was elevated at calving and decreased until 72h; and SID3 was reduced at calving and increased up to 48h. The Ca levels were reduced until 24h and increased up to 72h. Cows of third and fourth to sixth lactations presented lower values up to 24h. SCH was observed in almost half of the cows (43.3% to 55%) until 48h. The maintenance of hypocalcemia for three or more consecutive days occurred in 53.3% of third and fourth to sixth lactations cows. Ingestion of a high chloride prepartum anionic diet led to hyperchloremic acidosis and this imbalance was reversed on the second postpartum day. The induced effects on electrolyte and acid-base balances were not able to prevent the occurrence of SCH in the first days of lactation. RESUMO: Os objetivos do estudo foram avaliar os efeitos que a dieta aniônica pré-parto provoca sobre o equilíbrio eletrolítico e sobre a calcemia de vacas leiteiras de alta produção nos primeiros dias de lactação, e verificar o impacto sobre a frequência da hipocalcemia subclínica (HSC). Sessenta fêmeas hígidas HPB, com produção de 30 kg de leite/dia, manejadas em sistema intensivo (compost barn), foram distribuídas por grupos (n=15) de acordo com a ordem de lactação: primeira, segunda, terceira e quarta a sexta. Nas três semanas pré-parto receberam dieta com DCAD negativa (-6mEq/100g MS) e teor de cloreto elevado. Após o parto receberam dieta com DCAD positiva (18mEq/100g MS). O pH da urina foi mensurado antes do parto. As concentrações séricas de Na+, Cl-, K+ e Ca total e a diferença de íons fortes (SID3) foram determinadas em amostras colhidas ao parto (0h), 24, 48, 72 e 96h após. As frequências de HSC foram determinadas considerando-se o valor crítico de 2,125mmol/L (8,5mg/dL). ANOVA de medidas repetidas e teste de qui-quadrado foram empregados para as comparações. As vacas eliminavam urina ácida antes do parto. Os valores de Na+, K+, Cl- e SID3 não diferiram entre os grupos. Na+ e K+ não variaram entre os dias; Cl- era elevado ao parto e diminuiu até 72h; e SID3 era reduzida ao parto e aumentou até 48h. A calcemia era reduzida até 24h e se elevou até 72h. Vacas de terceira e de quarta a sexta lactações apresentaram valores mais baixos até 24h. A HSC foi observada em quase metade das vacas (43,3% a 55%) até 48h. A manutenção de hipocalcemia por três ou mais dias seguidos ocorreu em 53,3% das vacas de terceira e de quarta a sexta lactações. A ingestão de dieta aniônica pré-parto com alto teor de cloreto provocou acidose hiperclorêmica e este desequilíbrio se reverteu no segundo dia pós-parto. Os efeitos induzidos sobre os equilíbrios eletrolítico e ácido base não foram capazes de prevenir a ocorrência de HSC nos primeiros dias da lactação.

Background Both saline and lactated Ringer’s solutions are commonly given to surgical patients. However, hyperchloremic acidosis consequent to saline administration may provoke complications. The authors therefore tested the primary hypothesis that a composite of in-hospital mortality and major postoperative complications is less common in patients given lactated Ringer’s solution than normal saline. Methods The authors conducted an alternating cohort controlled trial in which adults having colorectal and orthopedic surgery were given either lactated Ringer’s solution or normal saline in 2-week blocks between September 2015 and August 2018. The primary outcome was a composite of in-hospital mortality and major postoperative renal, respiratory, infectious, and hemorrhagic complications. The secondary outcome was postoperative acute kidney injury. Results Among 8,616 qualifying patients, 4,187 (49%) were assigned to lactated Ringer’s solution, and 4,429 (51%) were assigned to saline. Each group received a median 1.9 l of fluid. The primary composite of major complications was observed in 5.8% of lactated Ringer’s versus 6.1% of normal saline patients, with estimated average relative risk across the components of the composite of 1.16 (95% CI, 0.89 to 1.52; P = 0.261). The secondary outcome, postoperative acute kidney injury, Acute Kidney Injury Network stage I–III versus 0, occurred in 6.6% of lactated Ringer’s patients versus 6.2% of normal saline patients, with an estimated relative risk of 1.18 (99.3% CI, 0.99 to 1.41; P = 0.009, significance criterion of 0.007). Absolute differences between the treatment groups for each outcome were less than 0.5%, an amount that is not clinically meaningful. Conclusions In elective orthopedic and colorectal surgery patients, there was no clinically meaningful difference in postoperative complications with lactated Ringer’s or saline volume replacement. Clinicians can reasonably use either solution intraoperatively. Editor’s Perspective What We Already Know about This Topic What This Article Tells Us That Is New

Aim – determine a forms of metabolic acidosis (MetAc) after cardiac surgery with cardiopulmonary bypass (CPB). Estimate significance of MetAc in an early postoperative period.Material and methods. We included the 129 adult cardiac surgery patients. We studied the indicators of acid-base blood status, markers of systemic inflammation, an oxygen delivery and consumption, the hemodynamic parameters, the clinical course of the postoperative period.Results. The acid-base disorders were found in 73.6 % of cases. The metabolic acidosis was in 51.2 % of cases: the lactate acidosis was in 92.4 % and the hyperchloremic acidosis was in 7.6 %. The metabolic lactate acidosis was represented by two forms: 1. the acid-base disorders due to a low cardiac output syndrome with a decrease in oxygen delivery and contractility (14.7 %); 2. the lactate acidosis due to a systemic inflammatory response syndrome (49.2 % of cases). It is associated with a high delivery and a low oxygen extraction, increased cardiac output and a vasoplegia. Patients with these disorders had a higher level of leukocytosis after 24 hours of the end the operation, had a longer duration of respiratory support and a long ICU stay and hospital stay.Conclusion. The lactate acidosis is represented by two forms: the lactate acidosis associated with the low cardiac output syndrome and lactate acidosis associated with the systemic inflammatory response. The lactate acidosis is a predictor of adverse outcome after cardiac surgery with CPB and associated with a postoperative complications and a mortality.

Although the first clinical use of a fluid therapy based on sodium chloride dates back to the European cholera pandemic in 1831 (1), the first clinical study focused on the acid-base equilibrium in patients receiving NaCl 0.9% (or saline or normal saline) for volume expansion was published in 1999 and was entitled “Rapid Saline Infusion Produces Hyperchloremic Acidosis in Patients Undergoing Gynecologic Surgery” (2). This landmark study aimed at evaluating the effects of the administration of saline, a high chloride concentration crystalloid, in clinical practice.

One of the key elements of therapy for sepsis and septic shock is the fluid replacement. Current guidelines suggests an insfusion of at least 30 ml / kg of crystalloid in the first three hours, and if necessary, more. Preference is given to balanced crystalloid solutions, but the choice of a particular solution remains unclear. A randomized, controlled study of the “Ringer-Malat” balanced crystalloid solution was performed, compared with isotonic saline for primary resuscitation of septic shock patients. The study involved 48 patients randomized to ringer malate (experimental) and 0.9% sodium chloride (control) group. The 30-day mortality rate was not significantly different between the groups (20.0% and 21.4% respectively, p = 0.521), but the trend was noted for less time on vasopressor support (58.2 versus 74.3 hours, respectively, p = 0.072), higher delivery of oxygen (1064.26 vs. 612.38 ml / min, p

Normal anion gap (non-gap) hyperchloremic acidosis with hypokalemia is a medical emergency. There are several causes of this metabolic phenomenon, of which distal renal tubular acidosis is among the very rare causes. In this report, we present an unusual case of a previously healthy woman who was admitted to the intensive care unit with a short history of severe muscle weakness. She had no significant past medical history and was not taking any regular medication. There was also no history of recent drug or herb ingestion. Investigations demonstrated a combination of severe hypokalemia, hyperchloremia, hypobicarbonatemia (non-gap metabolic acidosis), and relatively raised urinary potassium and urinary pH in the presence of severe hypokalemia and metabolic acidosis. Results suggested a diagnosis of distal renal tubular acidosis. The patient responded rapidly to a short course of electrolyte replacement therapy and the condition resolved spontaneously thereafter. This case highlights the fact that distal renal tubular acidosis can occur as a transient phenomenon in previously healthy individuals.

Intravenous fluid prescription is an essential part of postoperative care and may play a causal role in postoperative complications. The objective of the present study was to evaluate the relationship between intraoperative fluid administration and postoperative outcomes in a large cohort of pediatric patients. This analysis included a retrospective review of 172 patients who underwent gastroenterological surgery from January 2012 to September 2018 at an academic tertiary care hospital. Patients were evaluated based on the median amount of corrected crystalloids and subsequently dichotomized as low (25.89 mL/kg h). The primary outcome measure was the postoperative length of hospital stay (pLOS). Secondary outcome measures included the postoperative time to restore gastroenterological functions and postoperative complications. Patients who received larger amounts of crystalloids were more likely to have a lower intraoperative level of hemoglobin (P = .78) and an intraoperative blood transfusion (P = .27). There were trends toward lower incidence rates of hyperchloremic acidosis (P = .375) and metabolic acidosis (P = .54) in the high crystalloid administration cohort. The incidence of postoperative complications increased as the amount of administered fluid decreased (P = .046). The total length of hospital stay was shorter in patients who received high volumes of crystalloid fluid (19.5 [15.75–32.25] days) than in patients who received low volumes (22 [16–29.5] days, P = .283). Significant and multifaceted variability in crystalloid administration was noted among pediatric patients undergoing major surgery. High fluid administration was associated with favorable postoperative outcomes; these findings could be applied to improve patient safety and facilitate better quality of care.

This study reported on a 24-year-old woman who complained of a paroxysmal headache for six months and elevated blood pressure for four months. Laboratory examination revealed increased serum potassium and chloride levels, metabolic acidosis, suppressed renin activity, and increased plasma aldosterone concentration. Whole-exome sequencing revealed a heterozygous mutation in exon 11 of the KLHL3 gene: c.1298G > A. After treatment with low-dose hydrochlorothiazide, her clinical problems were controlled. This patient is the first case of Gordon syndrome (GS) within the Chinese population caused by a heterozygous KLHL3 mutation. A systematic review of the published literature identified 27 patients with GS caused by a KLHL3 mutation. These patients had a mean age of 28.2 ± 22.0 years; 74.1% presented with hypertension, 76.9% with hyperkalemia, and 59.1% with metabolic acidosis. The patients also had varying levels of plasma renin activity and plasma aldosterone concentrations.

Isotonic 0.9% sodium chloride (normal saline; NS) solution use is common, but its high chloride content has been shown to contribute to acid-base disturbances and acute kidney injury (AKI). As kidney transplant recipients are at high risk of postoperative AKI and renal replacement therapy, we aimed to evaluate the impact of perioperative NS administration on graft function after kidney transplantation. All adult patients undergoing deceased-donor kidney transplantation between January 2010 and December 2014 at the Rennes University Hospital were included. Logistic regression models were constructed to evaluate the association of hyperchloremia and hyperchloremic acidosis on delayed graft function (DGF), defined as the need for renal replacement therapy within the first week after transplantation. Three hundred and fifty-nine patients were included, 20% developed DGF. The mean (standard deviation) volume of NS infused in the operating room and in the standard postoperative intensive care unit stay was 4,832 (2,242) mL. In the first 24 postoperative hours, 11% of patients developed hyperchloremia and 11% developed hyperchloremic acidosis. These outcomes were not associated with significantly higher total volumes of NS administration or with DGF. In contrast, multivariable analysis showed that cold ischemia time, donor terminal creatinine, and perioperative NS volume were all independent predictors of DGF. Perioperative NS infusion volume was associated with DGF in deceased-donor kidney transplant recipients. Conversely, postoperative hyperchloremia and hyperchloremic acidosis were not associated with an increased risk of DGF, suggesting other mechanisms than a chloride effect.

Background: Concerns have been raised regarding the use of various intravenous fluids resulting in hyperchloremic acidosis and associated acute kidney injury; however, this has primarily been in the context of resuscitation and critical care, and not ward-based medical or surgical patients who receive lower volumes of infusion fluid. We aimed to determine whether normal saline use is more likely to produce hyperchloremic metabolic acidosis than compound sodium lactate, in acute general medical and surgical patients. Methods: This was a retrospective study, conducted in 2015 in a metropolitan hospital in Melbourne, Australia, and of 1,158 sequentially admitted general medical and surgical patients receiving either intravenous normal saline or compound sodium lactate. Demographics, admission diagnosis, comorbidities, and medications were compared. Serum biochemistry results 24 - 48 h post-infusion were analyzed. Primary outcome was incidence of serum hyperchloremia post-infusion. In addition, mean shift in serum chloride concentration as well as mean normalized chloride concentration (mmol/L per day per L of infusion) were calculated. Acute kidney injuries and deaths during admission were also reported. Results: A total of 221 patients (169 medical and 52 surgical patients) were included for analysis (mean age 71.6 years, 72% female), with 174 normal saline and 61 compound sodium lactate infusions. No difference in hyperchloremia rate was found (normal saline vs. compound sodium lactate; n = 8 (4.6%) vs. n = 2 (3.3%), P = 1.0). Post-infusion serum chloride concentration was also not significantly different (99.0 ± 5.1 mmol/L vs. 100.0 ± 3.4 mmol/L, P = 0.1700) between infusion groups. Normal saline infusions resulted in an increase of mean normalized chloride concentration compared to compound sodium lactate (1.2 ± 4.0 mmol/L per day/L vs. -0.3 ± 1.5, P = 0.0121). Conclusions: We conclude that 2 - 3 L normal saline infusions in this population do not appear to be associated with hyperchloremic acidosis more frequently than compound sodium lactate infusions, allaying concerns of normal saline use in wards. World J Nephrol Urol. 2018;7(2):39-44 doi: https://doi.org/10.14740/wjnu339w

TOPIC: Critical Care TYPE: Medical Student/Resident Case Reports INTRODUCTION: Toluene is an aromatic hydrocarbon widely used as a solvent in industrial and commercial products including paints, adhesives, ink, and rubber. It is occasionally used as an inhalant drug for its intoxicating properties. While mostly known for producing neurologic effects, here we report a case of toluene induced acute lung injury. CASE PRESENTATION: A 61-year-old female with a medical history of alcohol abuse, depression, congestive heart failure with preserved ejection fraction presented with one week of weakness and shortness of breath. She had been seen twice in the week prior having tested negative for SARS-COV2. In the emergency department, O2 saturation was 70% with respiratory distress on room air requiring high flow nasal cannula support. Labs were notable for a potassium of 2.7 mmol/L, acute kidney injury, elevated transaminases, lactate of 2.8 mmol/L and leukocyte count of 9800/nL. CT showed diffuse bilateral ground glass opacities involving the lung parenchyma concerning for atypical including viral pneumonia. Upon admission to the ICU she developed worsening hypoxia and respiratory failure requiring intubation.A discussion with the patient's husband revealed she had a history of glue sniffing. She had recently been decreasing her alcohol intake and substituting this with an increased frequency of sniffing both permanent markers and modeling glue. This raised suspicion for chemical pneumonitis secondary to toluene induced acute lung injury. DISCUSSION: Toluene is a highly lipophilic molecule readily inhaled via the lungs and distributed widely throughout the body producing side effects like ethanol intoxication via interfering mainly with GABA receptors. Neurologic manifestations range from euphoria and hallucinations to cognitive dysfunction and ataxia with chronic use. It specifically causes renal tubular acidosis typically manifesting as a normal anion gap hyperchloremic acidosis with hypokalemia. It can also cause hepatic injury and cardiac automaticity and conduction abnormalities.Acute lung injury secondary to toluene has been described but less frequently reported. Toxicity can result in Reactive Airway Dysfunction Syndrome (RADS) from acute or chronic exposure to various chemical irritants. All hydrocarbons, including toluene, can cause chemical pneumonitis by direct contact with the pulmonary parenchyma and destroying alveolar and capillary membranes resulting in vascular permeability and edema. Symptoms may include cough, wheezing, respiratory distress, and hypoxia. Bilateral interstitial infiltrates may be delayed for several hours after the development of pneumonitis. There is no specific antidote for toluene toxicity. CONCLUSIONS: Treatment for toluene and many chemical induced pneumonitides consists of supportive care, supplemental oxygen, bronchodilators, inhaled and systemic glucocorticoids and may require intubation and admission to an ICU in severe cases. REFERENCE #1: Camara-Lemarroy CR, Rodriguez-Gutierrez R, Monreal-Robles R, Gonzalez-Gonzalez JG. Acute toluene intoxication–clinical presentation, management and prognosis: a prospective observational study. BMC Emerg Med. 2015;15:19. Published 2015 Aug 18. doi:10.1186/s12873-015-0039-0 REFERENCE #2: Alberts WM, do Pico GA. Reactive airways dysfunction syndrome. Chest. 1996;109(6):1618-1626. doi:10.1378/chest.109.6.1618 REFERENCE #3: Tormoehlen LM, Tekulve KJ, Nanagas KA. Hydrocarbon toxicity: A review. Clin Toxicol (Phila). 2014;52(5):479-489. doi:10.3109/15563650.2014.923904 DISCLOSURES: No relevant relationships by Ryan Lee, source=Web Response No relevant relationships by Dominic Valentino, source=Web Response

Background: In resuscitation, normal saline could cause hyperchloremic metabolic acidosis, while balanced electrolyte solution is a crystalloid fluid resembling blood plasma with lower chloride content. This study compared the effect of normal saline and balanced electrolyte solution Ringerfundin (BES) as the resuscitation fluid in diabetic ketoacidosis (DKA) patients. Parameters applied in this study were standard base excess (SBE) as resuscitation’s result indicator and strong ion difference (SID) to measure chloride’s influence in developing hyperchloremic acidosis.Methods: A prospective, randomized, single blind controlled trial was conducted at the Emergency Department of Cipto Mangunkusumo Hospital. Thirty subjects with blood sugar >250 mg/dl, arterial pH

The purpose of the study: estimate the frequency of registration of different types of acid-base state disorders in children with acute infectious diarrhea; to determine the clinical features of acute intestinal infections that occur with metabolic acidosis (MA) and without it to choose the tactics of effective correction. Мaterials and methods : retrospective cohort study was conducted of 246 patients hospitalized in a hospital with clinic of acute infectious diarrhea. Results of the study : laboratory-confirmed acidosis, were recorded in 40.7% (95% CI 34.6–46.8), 100/246 children, incl. With a pH below 7.25 in 9.3% (95% CI 5–7–12.9), 23/246. The condition of alkalosis revealed in 4.9% (95% CI 2.2–7.6) of 12/246 examined. Hyperchloremic acidosis had a place in 81% (95% CI 73.3–88.7), 81/100 patients, with a high anionic deficiency in 19% (95% CI 11.3–26.7), 19/100, P

Introduction: Diabetic ketoacidosis (DKA) often becomes the primary focus and in turn masks a similar serious condition like hyperchloremic metabolic acidosis. Case report: A 20 years old female with type 1 diabetes mellitus presented to the emergency department (ED) with signs and symptoms corresponding to DKA. Initial pH, HCO3, Na and Cl concentrations were 6.83, 3.6 mmol/l, 143 mmol/l and 122 mmol/l respectively; anion gap 17.4 mmol/l and absent urinary ketones. DKA regime showed no improvement in the measured parameters nor the patient. The diagnosis changed to hyperchloremic high-anion gap acidosis and treatment modifications were made by adding sodium bicarbonate infusion. There was significant improvement in the clinical status of the patient and the calculated parameters. Discussion: Hyperchloremic acidosis is associated with a non-anion gap, decrease in plasma bicarbonate and increase in plasma chloride. Rarely, as with this case, it may present with a high-anion gap. The use of bicarbonate therapy has shown improvement in cases of non-anion gap acidosis however there is very little data to support its role in high-anion gap hyperchloremic metabolic acidosis. Keywords: Diabetic ketoacidosis, Hyperchloremia, Non-anion gap metabolic acidosis, High-anion gap metabolic acidosis

Intravenous crystalloid therapy is one of the most ubiquitous aspects of hospital and critical care medicine. In recent years, there has been increasing focus on the electrolyte composition, and particularly chloride content, of crystalloid solutions. This has led to increasing clinical adoption of balanced solutions, containing substrates for bicarbonate generation and consequently a lower chloride content, in place of 0.9% saline. In this article we review the physiochemical rationale for avoidance of 0.9% saline and the effects of hyperchloremic acidosis on renal physiology. Finally, we review the current evidence and rationale for use of balanced solutions greater than 0.9% saline in acutely ill patients in a variety of clinical settings, as well as considering the role for sodium bicarbonate in preventing or correcting metabolic acidosis. In conclusion, there is a strong physiological rationale for avoidance of iatrogenic hyperchloremic acidosis from 0.9% saline administration in acutely unwell patients and an association with adverse renal outcomes in several studies. However, evidence from large definitive multicenter randomized trials is not yet available to establish the dose-relationship between 0.9% saline administration and potential harm and inform us if some 0.9% saline use is acceptable or if any exposure confers harm.

Familial hyperkalemia and hypertension (FHHt) is an inherited disease characterized by hyperkalemia, hypertension, and hyperchloremic acidosis (1, 2). The primary defect is a hyperactive sodium chloride cotransporter (NCC), expressed exclusively in renal distal convoluted tubule (DCT). FHHt is caused by a mutation in 1 of 4 genes, WNK1, WNK4, KLHL3, and Cul3, which leads to activation of NCC (2). A recent publication in PNAS (3) shows that a mutation of WNK4 prevents specific modulation by Cl− ions, inhibits its activity, and produces a FHHt phenotype. This emphasizes the significant role of WNK4 in renal Cl− handling in pathogenesis of FHHt and the question of the mechanism of hyperchloremic metabolic acidosis (4). Is hyperchloremia in FHHt a primary abnormality … [↵][1]1To whom correspondence may be addressed. Email: farfel{at}post.tau.ac.il. [1]: #xref-corresp-1-1

Background: Fluid replacement to correct acidosis and electrolyte abnormalities is the cornerstone of treatment of diabetic ketoacidosis (DKA). We evaluated the rates of change in pH, pCO2, anion gap, Na, K, and Cl in children randomized to four DKA fluid treatment protocols. Methods: From a large study conducted by The Pediatric Emergency Care Applied Research Network we used data from 714 children Results: The median age, sex, and baseline laboratory characteristic of the patients did not differ by treatment arm. The rate of change of pH did not differ by the arm, however the rate of rise of pCO2 was more rapid in the fast vs. slow fluid arms during the initial 4 h. The rate of decrease in anion gap was more rapid in the fast vs. slow arms during the initial 4 h and 8 h (p Conclusions: In children treated for DKA, faster fluid administration led to more rapid normalization of anion gap and pCO2 than slower fluid rates. However, more rapid fluid rates were associated with increased frequency of hyperchloremic acidosis. Disclosure A. Rewers: None. N.D. Kuppermann: Other Relationship; Self; InsuCalc. M.J. Stoner: None. A. Garro: None. K. Quayle: None. J.E. Bennett: None. S. Myers: None. J.K. McManemy: None. L.E. Nigrovic: None. J.L. Trainor: None. L. Tzimenatos: None. M. Kwok: None. C.S. Olsen: None. T.C. Casper: None. S. Ghetti: None. N. Glaser: Consultant; Self; Bristol-Myers Squibb Company. Other Relationship; Self; Insucalc. Funding Eunice Kennedy Shriver National Institute of Child Health and Human Development

Background Chloride is speculated to have nephrotoxic properties. In healthy subjects we tested the hypothesis that acute chloride loading with 3% saline would induce kidney injury, which could be prevented with the loop-diuretic furosemide. Methods The study was designed as a randomized, placebo-controlled, crossover study. Subjects were given 3% saline accompanied by either placebo or furosemide. Before, during and after infusion of 3% saline we measured glomerular filtration rate (GFR), fractional excretion of sodium (FENa), urinary chloride excretion (u-Cl), urinary excretions of aquaporin-2 (u-AQP2) and epithelial sodium channels (u-ENaCγ), neutrophil gelatinase-associated lipocalin (u-NGAL) and kidney injury molecule-1 (u-KIM-1) as marker of kidney injury and vasoactive hormones: renin (PRC), angiotensin II (p-AngII), aldosterone (p-Aldo) and arginine vasopressin (p-AVP). Four days prior to each of the two examinations subjects were given a standardized fluid and diet intake. Results After 3% saline infusion u-NGAL and KIM-1 excretion increased slightly (u-NGAL: 17 ± 24 during placebo vs. -7 ± 23 ng/min during furosemide, p = 0.039, u-KIM-1: 0.21 ± 0.23 vs − 0.06 ± 0.14 ng/ml, p

INTRODUCTION: The ideal asanguineous intravenous fluid for volume resuscitation in children is controversially debated and clinical practice guidelines are scarce. Administration of large amounts of normal saline has been associated with complications including hyperchloremic acidosis, dysnatremia, neurologic damage, and fatality. AIM: We examined the current practice of intravenous fluid and blood product administration in acutely ill and injured children among pediatric acute care physicians in Switzerland. METHODS: For this descriptive, cross-sectional study, pediatric emergency departments, pediatric and neonatal intensive care units were surveyed by means of an online questionnaire. RESULTS: Sixty of 66 departments and 47 of 87 participants returned the survey. Normal saline (NS) was most commonly administered (n = 42/46, 91.3%) and twice as many times as balanced electrolyte solutions (n = 20/46, 43.5%). The mean fluid volumes ranged from 7.9 to 19.1 mL/kg. Hypertonic saline/NS were selected most often for shock with severe head injury. Half of participants administered colloids (48.9%). Packed red blood cells (97.7%) and fresh frozen plasma (88.4%) were most frequently given blood products. CONCLUSION: There is a distinct practice variation in intravenous fluid and blood product administration in children in Switzerland. Although NS is most frequently given, we observed a trend toward the use of balanced electrolyte solutions. Prospective studies are warranted to compare NS with balanced electrolyte solution (BES) in the pediatric acute care setting. We suggest that pediatric fluid administration guidelines and mass transfusion protocols are implemented to standardize this frequent intervention and minimize complications.

Context and Aims: Off-pump coronary artery bypass graft (OPCABG) is a form of CABG surgery. It is performed without the use of cardiopulmonary bypass machine as a surgical treatment for coronary heart disease. Acute kidney injury (AKI) is one of the common postoperative complications of OPCABG. Previous studies suggest important differences related to intravenous fluid (IVF) chloride content and renal function. We hypothesize that perioperative use of chloride restricted IVFs may decrease incidence and severity of postoperative AKI in patients undergoing OPCABG. Methods: Six hundred patients were randomly divided into two groups of 300 each. In Group A (n = 300), chloride liberal IVFs, namely, hydroxyethyl starch (130/0.4) in 0.9% normal saline (Voluven), 0.9% normal saline, and Ringer's lactate were used for perioperative fluid management. In Group B (n = 300), chloride-restricted IVFs, namely, hydroxyethyl starch (130/0.4) in balanced colloid solution (Volulyte) and balanced salt crystalloid solution (PlasmaLyte A), were used for perioperative fluid management. Serum creatinine values were taken preoperatively, postoperatively at 24 h and at 48 h. Postoperative AKI was determined by AKI network (AKIN) criteria. Results: In Group A, 9.2% patients and in Group B 4.6% patients developed Stage-I AKI determined by AKIN criteria which was statistically significant (P < 0.05). Conclusion: Perioperative use of chloride restricted IVF was found to decrease incidence of postoperative AKI. The use of chloride liberal IVF was associated with hyperchloremic metabolic acidosis.

Asthma is a common illness throughout the world that affects the respiratory system function, i.e., a system whose operational adequacy determines the respiratory gases exchange. It is therefore expected that acute severe asthma will be associated with respiratory acid-base disorders. In addition, the resulting hypoxemia along with the circulatory compromise due to heart–lung interactions can reduce tissue oxygenation, with a particular impact on respiratory muscles that have increased energy needs due to the increased workload. Thus, anaerobic metabolism may ensue, leading to lactic acidosis. Additionally, chronic hypocapnia in asthma can cause a compensatory drop in plasma bicarbonate concentration, resulting in non-anion gap acidosis. Indeed, studies have shown that in acute severe asthma, metabolic acid-base disorders may occur, i.e., high anion gap or non-anion gap metabolic acidosis. This review briefly presents studies that have investigated acid-base disorders in asthma, with comments on their underlying pathophysiology.

The topic of intravenous (IV) fluids may be regarded as “reverse nephrology”, because nephrologists usually treat to remove fluids rather than to infuse them. However, because nephrology is deeply rooted in fluid, electrolyte, and acid-base balance, IV fluids belong in the realm of our specialty. The field of IV fluid therapy is in motion due to the increasing use of balanced crystalloids, partly fueled by the advent of new solutions. This review aims to capture these recent developments by critically evaluating the current evidence base. It will review both indications and complications of IV fluid therapy, including the characteristics of the currently available solutions. It will also cover the use of IV fluids in specific settings such as kidney transplantation and pediatrics. Finally, this review will address the pathogenesis of saline-induced hyperchloremic acidosis, its potential effect on outcomes, and the question if this should lead to a definitive switch to balanced solutions.

Metabolic acidosis frequently is present in surgical patients; however, different types of metabolic acidosis (hyperlactatemia, hyperchloremia, and others) may have different relationships to perioperative outcomes. We hypothesized that in postoperative surgical patients, distinctive types of metabolic acidosis would correlate differently with the outcomes of high-risk surgeries.A prospective, multicenter observational study was performed in 3 different tertiary care hospitals. Patients who required postoperative admission to the intensive care unit (ICU) were included in this study. Patients with a short life expectancy (those with untreated cancer and limited treatment), hepatic failure, renal failure, or a diagnosis of diabetes were excluded. Patients were classified at ICU admission according to the presence and type of metabolic acidosis into 4 groups: those without acidosis, those with a base excess-4 mmol/L and albumin-corrected anion gap ≤12 mmol/L (hyperchloremic), those with a base excess-4 mmol/L and increased albumin-corrected anion gap12 mmol/L, and those with a base excess-4 mmol/L and hyperlactatemia2 mmol/L. Furthermore, patients were reclassified 12 hours after admission to the ICU to verify the metabolic acidosis behavior and outcome differences among the groups.The study included 618 patients. The incidence of acidosis at ICU admission was 59.1%; 23.9% presented with hyperchloremia, 21.3% with hyperlactatemia, 13.9% with increased anion gap, and 40.9% of the patients presented without metabolic acidosis. Patients whose metabolic acidosis persisted for 12 hours had an incidence of ICU complications rates in hyperlactatemia group of 68.8%, increased anion gap of 68.6%, hyperchloremic of 65.8%, and those without acidosis over 12 hours of 59.3%. A Cox regression model for postoperative 30-day mortality showed: in hyperlactatemic acidosis, hazard ratio (HR) = 1.74, 95% confidence interval (CI) = 1.02-2.96; increased anion gap acidosis, HR = 1.68, 95% CI = 0.85-3.81; hyperchloremic acidosis, HR = 1.47, 95% CI = 0.75-2.89, and 10.3% of 30-day mortality rate in patients without acidosis. An adjusted survival curve by Cox regression found a worse 30-day survival in the hyperlactatemic group compared with the other groups (P = .03). Furthermore, in multiple comparisons among groups, patients with hyperlactatemic acidosis were more likely to develop renal dysfunction (P.001) up to the seventh day postoperatively.We found that among patients with different types of acidosis, patients who developed hyperlactatemic metabolic acidosis postoperatively showed greater rates of renal dysfunction within 7 days and hyperlactatemic acidosis represented an independent factor on 30-day mortality in high-risk surgical patients.

Urinary pH is a major determinant for kidney stone formation. Supersaturation of calcium phosphate increases rapidly as urine pH rises above 6. The prevalence of calcium phosphate stones has increased recently and urinary conditions that favor the formation of these stones are the combination of hypercalciuria and hypocitraturia in alkaline urine. Some patients may have complete or incomplete distal renal tubular acidosis (dRTA) characterized by hyperchloremic acidosis (incomplete dRTA does not manifest metabolic acidosis under basal conditions), hypocitraturia, and high [...]

Background The administration of potassium solutions may result in hyperpotassemia during surgery; normal saline solution (NSS) traditionally used in renal transplant may cause hyperchloremic acidosis. Objective To compare the safety of Lactated Ringer's (LR) against NSS in renal transplantation. Search strategy A systematic review was completed on Central Cochrane Registry – controlled trials, Medline, Lilacs, EBSCO and Embase, accessing review articles and contacting expert clinicians. There was no language restriction. Selection criteria Randomized controlled trials on adult patients undergoing renal transplantation. Data collection and analysis Independent trial selection, quality assessment and data extraction were performed. The mean differentials were estimated with a 95% confidence interval (95% CI). Heterogeneity was evaluated with statistic I-square (I2) and the fixed and random effect models were used. Results Four trials with a total of 237 patients were included. At the end of surgery, the potassium differential was non-significant (means difference (MD: −0.26 mEq/L; CI 95%: −0.58 to 0.05 p = 0.10; I2 = 75%); the pH was lower in the NSS group (MD: 0.06; CI 95%: 0.05–0.08; p Conclusions The use of RL vs. NSS during the renal transplantation perioperative period results in lower potassium and chloride levels and a higher pH, with no significant Creatinine changes.