Materiały źródłowe

• #1 Management of Hyponatremia | AAFP

  https://www.aafp.org/pubs/afp/issues/2004/0515/p2387.html

  Hyponatremia is an important electrolyte abnormality with the potential for significant morbidity and mortality. […] Management includes instituting immediate treatment in patients with acute severe hyponatremia because of the risk of cerebral edema and hyponatremic encephalopathy. In patients with chronic hyponatremia, fluid restriction is the mainstay of treatment, with demeclocycline therapy reserved for use in persistent cases. […] The treatment of hyponatremia can be divided into two steps. First, the physician must decide whether immediate treatment is required. This decision is based on the presence of symptoms, the degree of hyponatremia, whether the condition is acute (arbitrarily defined as a duration of less than 48 hours) or chronic, and the presence of any degree of hypotension. The second step is to determine the most appropriate method of correcting the hyponatremia.

• #1 Overview of the treatment of hyponatremia in adults – UpToDate

  https://www.uptodate.com/contents/overview-of-the-treatment-of-hyponatremia

  Overview of the treatment of hyponatremia in adults […] This topic provides an overview of the treatment of adults with hyponatremia, including the pretreatment evaluation, selection of initial and subsequent therapy, goals of therapy, and common pitfalls. […] GOALS OF THERAPY: Prevent a further decline in serum sodium, Prevent brain herniation, Relieve symptoms of hyponatremia, Avoid overcorrection. […] ACUTE HYPONATREMIA: INITIAL THERAPY (FIRST SIX HOURS) […] CHRONIC HYPONATREMIA: INITIAL THERAPY (FIRST SIX HOURS) […] Additional measures in all patients […] SUBSEQUENT THERAPY (FIRST SEVERAL DAYS): Monitoring, Subsequent therapy of chronic hyponatremia, Discontinuing hypertonic saline used as initial therapy, Fluid restriction, Other therapies for chronic hyponatremia. […] Diagnose and treat the underlying cause of hyponatremia. […] APPROACHES THAT WE TYPICALLY AVOID: Use of isotonic saline in symptomatic or severe hyponatremia, Use of predictive formulas.

• #1 Management of Hyponatremia | AAFP

  https://www.aafp.org/pubs/afp/issues/2004/0515/p2387.html

  Acute severe hyponatremia (i.e., less than 125 mmol per L) usually is associated with neurologic symptoms such as seizures and should be treated urgently because of the high risk of cerebral edema and hyponatremic encephalopathy. […] In patients with chronic hyponatremia, overzealous and rapid correction should be avoided because it can lead to central pontine myelinolysis. […] In most cases of chronic asymptomatic hyponatremia, removing the underlying cause of the hyponatremia suffices. […] Otherwise, fluid restriction (less than 1 to 1.5 L per day) is the mainstay of treatment and the preferred mode of treatment for mild to moderate SIADH. […] The combination of loop diuretics with a high-sodium diet may be required to achieve an adequate response in patients with chronic SIADH. […] In patients who have difficulty adhering to fluid restriction or who have persistent severe hyponatremia despite the above measures, demeclocycline (Declomycin) in a dosage of 600 to 1,200 mg daily can be used to induce a negative free-water balance by causing nephrogenic diabetes insipidus.

• #1 Diagnosis and Management of Sodium Disorders: Hyponatremia and Hypernatremia | AAFP

  https://www.aafp.org/pubs/afp/issues/2015/0301/p299.html

  Severe symptomatic hyponatremia must be corrected promptly because it can lead to cerebral edema, irreversible neurologic damage, respiratory arrest, brainstem herniation, and death. Treatment includes the use of hypertonic 3% saline infused at a rate of 0.5 to 2 mL per kg per hour until symptoms resolve. […] The rate of sodium correction should be 6 to 12 mEq per L in the first 24 hours and 18 mEq per L or less in 48 hours. Rapid correction of sodium can result in osmotic demyelination. […] Vaptans (conivaptan and tolvaptan) are vasopressin-receptor antagonists approved for the treatment of hospitalized patients with severe hypervolemic and euvolemic hyponatremia. However, their use in the management of hyponatremia is controversial. Several trials have demonstrated that vaptans increase sodium levels in patients with cirrhosis and heart failure. […] Regardless of their effectiveness in increasing sodium levels, vaptans should not be used in patients with hepatic impairment because they may worsen liver function.

• #1 Hyponatremia Treatment & Management: Approach Considerations, Medical Care, Diet

  https://emedicine.medscape.com/article/242166-treatment

  For patients with symptomatic acute hyponatremia (duration 48 h, such as after surgery), the treatment goal is to increase the serum sodium level by approximately 4-6 mEq/L/h to prevent brain herniation or until the neurologic symptoms subside. […] In contrast, in chronic symptomatic hyponatremia, the rate of correction should not exceed 4-6 or 4-8 mEq/L/d, depending on the ODS risk. Guidelines recommend no more than 18 mEq/L in the first 48 h. […] For asymptomatic patients, the treatment options below may be of use. […] Hypovolemic hyponatremia: For patients with reduced circulating volume, restore intravascular volume with an intravenous infusion of 0.9% saline or a balanced crystalloid solution at 0.5 to 1.0 mL/kg per hour to suppress the cause of physiologic vasopressin release. […] Hypervolemic hyponatremia: Treat patients who are hypervolemic with fluid restriction plus loop diuretics, and correction of the underlying condition.

• #1 Hyponatremia | Diagnosis & Disease Information – Renal and Urology News

  https://www.cancertherapyadvisor.com/home/decision-support-in-medicine/hospital-medicine/hyponatremia/

  How hyponatremia is treated depends on the underlying diagnosis and severity of symptoms. In general, sodium levels should be increased gradually to avoid osmotic demyelination syndrome. Patients who develop this syndrome experience destruction of the myelin sheaths covering brainstem nerves, which leads to brain cell dysfunction. Acute hyponatremia with severe neurologic symptoms can be treated with a sodium infusion of 4 to 6 mmol/L over 4 to 6 hours. The total increase in sodium concentration should not exceed 6 to 12 mmol/L within 24 hours or 18 mmol/L within 48 hours. Water intake should be restricted. […] In cases of chronic hyponatremia, patients known to have gradually developed hyponatremia and those with no prior history of hyponatremia should have their sodium increased by no more than 0.5 mmol/L/hour. The total increase in sodium concentration should not exceed 8 mmol/L in 24 hours.

• #1 Hyponatremia Treatment & Management: Approach Considerations, Medical Care, Diet

  https://emedicine.medscape.com/article/242166-treatment

  When faced with a patient with hyponatremia, the first decision is what type of fluid, if any, should be given. The treatment of hypertonic and pseudohyponatremia is directed at the underlying disorder, in the absence of symptoms. […] Hypotonic hyponatremia accounts for most clinical cases of hyponatremia. The first step in these cases is to determine whether emergency therapy is warranted. The following three factors guide treatment: Degree and severity of clinical symptoms, Duration and magnitude of the hyponatremia, Patient’s volume status. […] The recommendations for treatment of hyponatremia rely on the current understanding of the central nervous system (CNS) adaptation to an alteration in serum osmolality. In the setting of an acute fall in the serum osmolality, neuronal cell swelling occurs due to the water shift from the extracellular space to the intracellular space (ie, Starling forces). Therefore, correction of hyponatremia should take into account the limited capacity of this adaptation mechanism to respond to acute alteration in the serum tonicity, because the degree of brain edema and consequent neurologic symptoms depend as much on the rate and duration of hypotonicity as they do on its magnitude.

• #1 Hyponatremia Medication: Diuretics, Antibiotics, Arginine Vasopressin Antagonists, Urea Supplements, Vasopressin Analog

  https://emedicine.medscape.com/article/242166-medication

  Demeclocycline can cause insensitivity of distal renal tubules to the action of ADH and produce a nephrogenic diabetes insipidus. Effects are seen within 5 days and are reversed within 2-6 days following cessation of therapy. Demeclocycline can be nephrotoxic and cause nausea, vomiting, and photosensitivity. […] V2 receptor antagonism of AVP in the renal collecting duct results in aquaresis (excretion of free water). […] Arginine vasopressin antagonist (V1A, V2), indicated for euvolemic (dilutional) and hypervolemic hyponatremia, increases urine output of mostly free water, with little electrolyte loss. […] Selective vasopressin V2-receptor antagonist is indicated for euvolemic or hypervolemic hyponatremia, associated with SIADH or congestive heart failure. Initiate or reinitiate in hospital environment only. Tolvaptan can cause serious and potentially fatal liver injury; hence, duration of use is limited to 30 days to minimize risk of liver injury.

• #1 Management of Hyponatremia | AAFP

  https://www.aafp.org/pubs/afp/issues/2004/0515/p2387.html

  In patients with hypervolemic hyponatremia, fluid and sodium restriction is the preferred treatment. Loop diuretics can be used in severe cases. […] Hemodialysis is an alternative in patients with renal impairment. […] Newer agents such as the arginine vasopressin receptor antagonists have shown promising results and may be useful in patients with chronic hyponatremia. […] In all patients with hyponatremia, the cause should be identified and treated.

• #1 Management of Hyponatremia in Heart Failure: Practical Considerations

  https://www.mdpi.com/2075-4426/13/1/140

  Hyponatremia is commonly encountered in the setting of heart failure, especially in decompensated, fluid-overloaded patients. […] It is crucial to differentiate between dilutional hyponatremia, where free water excretion should be promoted, and depletional hyponatremia, where administration of saline is needed. […] Treatment options for hyponatremia in heart failure, such as water restriction or the use of hypertonic saline with loop diuretics, have limited efficacy. […] The main treatment options for dilutional hyponatremia are represented by fluid restriction and the use of hypertonic saline with loop diuretics. […] The first-line treatment of acute decompensated heart failure with dilutional hyponatremia is represented by loop diuretics, as they increase the distal nephron flow and reduce tonicity in the renal interstitium, promoting free water excretion.

• #1

  https://journals.lww.com/cjasn/fulltext/2024/01000/treatment_guidelines_for_hyponatremia__stay_the.21.aspx

  The strongest case for relowering the serum sodium to prevent osmotic demyelination can be made in patients at very high risk of developing the disorder (those with a sodium 105 mmol/L or patients with heavy alcohol use, severe hypokalemia, malnutrition, or advanced liver disease). […] Inadvertent overcorrection can be avoided by replacing urinary water losses or by stopping them with desmopressin (DDAVP). […] The technique, which has been called the DDAVP clamp, has been reported to successfully meet correction goals, but more data are needed comparing the technique to other therapeutic options. […] We strongly believe that abandoning established safeguards now is a bit like discarding your umbrella because you have remained dry in a rainstorm.

• #1 Hyponatremia – Knowledge @ AMBOSS

  https://www.amboss.com/us/knowledge/hyponatremia/

  If hyponatremia persists after diuretic use has been stopped, consider other causes. […] Management of sodium overcorrection […] Initial serum Na+ 120 mEq/L: Management of overcorrection is probably not necessary. […] Initial serum Na+: If the increase in sodium exceeds sodium correction limits, start treatment to lower serum sodium. […] Discontinue hyponatremia treatment and consider early specialist consult. […] Replace free water losses (e.g., 5% dextrose in water). […] Consider adding desmopressin (off-label). […] Consider glucocorticoids, e.g., dexamethasone (off-label), to prevent ODS. […] Monitor urine output and fluid balance closely. […] Check serum sodium frequently until sodium goals and limits are achieved. […] Disposition […] Severe symptomatic hyponatremia and/or treatment with hypertonic saline: ICU admission […] Acute, symptomatic, or severe hyponatremia and/or risk factors for ODS: inpatient care […] Asymptomatic mild hyponatremia with underlying cause identified and treated: Consider outpatient management with close follow-up.

• #1 Hyponatremia – Knowledge @ AMBOSS

  https://www.amboss.com/us/knowledge/hyponatremia/

  Administer isotonic saline infusion (0.9% NaCl) and monitor serum sodium. […] Serum sodium: Hypovolemic hypotonic hyponatremia is likely. […] Serum sodium: SIADH is likely. […] Monitoring: Monitor patients closely for signs of overcorrection. […] Monitor urine output (e.g., every hour): 1 mL/kg/hour should raise concern for overcorrection. […] Measure serum sodium frequently (at least every 4-6 hours until 125 mEq/L). […] Goal: The goal correction rate depends on the risk of ODS; see Recommended sodium correction rates. […] Hypovolemic hyponatremia […] Isotonic saline (e.g., 0.9% NaCl IV) […] Consider using hyponatremia formulas to guide the initial correction rate. […] Adjust the infusion rate until the sodium goal is met. […] Euvolemic hyponatremia […] Fluid restriction (all fluids, not just free water)

• #1 Hyponatremia Medication: Diuretics, Antibiotics, Arginine Vasopressin Antagonists, Urea Supplements, Vasopressin Analog

  https://emedicine.medscape.com/article/242166-medication

  The primary treatments used in the management of hyponatremic patients rely on the use of intravenous sodium-containing fluids (normal saline or hypertonic saline) and fluid restriction. This is followed by use of loop diuretics (eg, furosemide), arginine vasopressin (AVP) receptor antagonists (eg, tolvaptan, conivaptan), or urea; less commonly, salt tablets, or demeclocycline are used. […] Oral salt tablets in conjunction with loop diuretics can be used to help excrete urinary free water. Sodium chloride tablets (1 gram) are osmotically active and ingesting 9 grams of sodium chloride in one day equals the addition of an extra 154 mEq each of sodium and chloride. Salt tablets should be avoided in the treatment of hypervolemic hyponatremia (eg, heart failure). […] Furosemide inhibits sodium/potassium/chloride cotransport system, thereby increasing solute delivery to distal renal tubules, which acts to increase free water excretion. Elderly patients may have greater sensitivity to effects of loop diuretics.

• #1 Vaptans for the treatment of hyponatremia | Nature Reviews Endocrinology

  https://www.nature.com/articles/nrendo.2010.229

  The vaptans constitute a new class of pharmaceuticals developed for the treatment of the hypervolemic and euvolemic forms of hyponatremia. […] Vaptans are particularly useful to treat hypervolemic hyponatremia associated with severe congestive heart failure or chronic liver failure, as the only other treatments currently available, such as fluid restriction and diuretics, are slow-acting and minimally effective. […] Vaptans are also useful for treating euvolemic hyponatremia associated with the syndrome of inappropriate antidiuretic hormone (SIADH), at least when it is chronic and/or minimally symptomatic. […] Vaptan therapy is absolutely contraindicated in hypovolemic hyponatremia (in which total body water is reduced) and is ineffective in the vasopressin-independent form of inappropriate antidiuresis caused by constitutive activating mutations of V2 receptors.

• #1 Managing Hyponatremia in Heart Failure | USC Journal

  https://www.uscjournal.com/articles/managing-hyponatremia-heart-failure?language_content_entity=en

  AVP receptor antagonists are a new class of drug that has been developed for the treatment of hyponatremia, and selectively increases solute-free water excretion by the kidneys. […] Several AVP antagonists have been developed for use in the treatment of hyponatremia. […] Conivaptan (Vaprisol, Astellas Pharma) was the first AVP receptor antagonist to be approved by the US Food and Drug Administration (FDA) for the treatment of euvolemic hyponatremia. […] Clinically, the effect of conivaptan is to increase urine loss and normalize sodium concentrations. […] Tolvaptan (Otsuka Inc.) is a developmental oral, non-peptide antagonist that blocks AVP binding to V2 receptors to induce the excretion of electrolyte-free water. […] Tolvaptan treatment resulted in a higher non-dose-dependent net volume loss than placebo and a sustained increase in sodium levels in hyponatremic patients.

• #1 Hyponatremia Medication: Diuretics, Antibiotics, Arginine Vasopressin Antagonists, Urea Supplements, Vasopressin Analog

  https://emedicine.medscape.com/article/242166-medication

  Oral urea is an osmotic agent that increases urinary free water excretion. It is effective, safe, well tolerated and cost effective for treatment of SIADH associated hyponatremia. […] Desmopressin (DDAVP), a synthetic analogue of the antidiuretic hormone arginine vasopressin, increases cyclic adenosine monophosphate (cAMP), in a dose-dependent manner, in renal tubular cells. This increases water permeability, resulting in decreased urine volume and increased urine osmolality.

• #1

  https://link.springer.com/article/10.1007/s10157-024-02606-3

  This review provides a comprehensive overview of treatment of hyponatremia for better comprehension and improved clinical practice. […] Treatment of hyponatremia is usually more challenging than that of other electrolyte disorders due to its complexity and varying treatment goals and methods recommended by different guidelines. […] The six principles of treatment are as follows: 1. Correct promptly with hypertonic saline (usually 3% saline) if acute and symptomatic (moderate-to-severe). 2. If chronic/asymptomatic or minimally/mildly symptomatic, correct at a moderate rate, regardless of the correction method. 3. Discontinue medications associated with impaired renal free water excretion or natriuresis. 4. Adhere to upper correction limit if in patients at high risk for developing osmotic demyelination syndrome (ODS), except in acute/symptomatic (moderate-to-severe) cases. 5. If overly rapidly corrected, re-lower to low serum [Na+] with 5% dextrose (D5W) and/or desmopressin in carefully selected patients. 6. Perform frequent blood tests and monitor urine output after treatment initiation.

• #1 Management of hyponatremia: Providing treatment and avoiding harm | MDedge

  https://blogs.the-hospitalist.org/content/management-hyponatremia-providing-treatment-and-avoiding-harm

  Hyponatremia is sometimes merely a laboratory artifact or a result of improper blood collection. If real, it can be due to excessive water intake or, most often, the inability of the kidney to excrete water coupled with continued water intake. Patients with significant underlying cardiac, hepatic, or renal dysfunction are at greatest risk of developing hyponatremia, secondary to the nonosmotic release of antidiuretic hormone (ADH). Others at risk include postoperative patients (especially menstruating women), older patients on thiazide diuretics, patients with malignant or psychiatric illness, and endurance athletes. […] In this article, we review the treatment of acute and chronic hyponatremia, emphasizing the importance of basing the therapy on the severity of symptoms and taking care not to raise the serum sodium level too rapidly, which can cause neurologic dysfunction.

• #2 Hyponatremia – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK470386/

  Treatment of hyponatremia depends upon the degree of hyponatremia, duration of hyponatremia, severity of symptoms, and volume status. […] Severely symptomatic hyponatremia: Administer 3% sodium chloride; 100 mL intravenous (IV) bolus (repeat up to twice if symptoms persist). […] Mild to moderately symptomatic hyponatremia: 3% Sodium chloride, slow infusion (use sodium deficit formula to calculate the rate of infusion but recalculate rate with frequent sodium monitoring). […] Hypovolemic hyponatremia: Isotonic fluids administration and holding of any diuretics. […] Hypervolemic hyponatremia: Treat underlying condition, restrict salt and fluids, and administer loop diuretics. […] Euvolemic hyponatremia: Fluid restriction to less than 1 liter per day. […] Selective vasopressin 2 receptor antagonists are being used recently. They increase the excretion of water in the kidneys without affecting sodium, thereby increasing serum sodium levels.

• #2 Overview of the treatment of hyponatremia in adults – UpToDate

  https://www.uptodate.com/contents/overview-of-the-treatment-of-hyponatremia-in-adults

  Overview of the treatment of hyponatremia in adults […] This topic provides an overview of the treatment of adults with hyponatremia, including the pretreatment evaluation, selection of initial and subsequent therapy, goals of therapy, and common pitfalls. […] GOALS OF THERAPY: Prevent a further decline in serum sodium, Prevent brain herniation, Relieve symptoms of hyponatremia, Avoid overcorrection. […] ACUTE HYPONATREMIA: INITIAL THERAPY (FIRST SIX HOURS) […] CHRONIC HYPONATREMIA: INITIAL THERAPY (FIRST SIX HOURS) […] Additional measures in all patients […] SUBSEQUENT THERAPY (FIRST SEVERAL DAYS): Monitoring, Subsequent therapy of chronic hyponatremia, Discontinuing hypertonic saline used as initial therapy, Fluid restriction, Other therapies for chronic hyponatremia. […] Diagnose and treat the underlying cause of hyponatremia.

• #2 Hyponatremia Treatment & Management: Approach Considerations, Medical Care, Diet

  https://emedicine.medscape.com/article/242166-treatment

  A panel of United States experts on hyponatremia issued guidelines on the diagnosis, evaluation, and treatment of hyponatremia in 2007; the guidelines were updated in 2013. […] Although not completely uniform in their recommendations, the guideline have a common aim of acute treatment of moderately and severely symptomatic patients with the goal of increasing the serum sodium concentration by about 4-6 mmol/L in the first few hours, to prevent brain herniation and neurologic damage from cerebral ischemia. […] The treatment of chronic hyponatremia focuses on avoiding overcorrection to reduce the risk of osmotic demyelination syndrome (ODS). The higher risk of ODS in some patients would lower the limit on the daily correction rate. […] Addition of desmopressin should be discussed with an expert, particularly in patients at high risk of developing ODS.

• #2 Hyponatremia – Knowledge @ AMBOSS

  https://www.amboss.com/us/knowledge/hyponatremia/

  Hypertonic saline (emergency treatment) […] Early specialist consultation (intensive care, and/or nephrology) is advised. […] Indications […] Severe symptoms (e.g., cardiorespiratory distress, somnolence, and/or seizures) […] Moderately severe symptoms (e.g., vomiting and/or confusion) […] A single hypertonic saline bolus may be considered in acute hyponatremia without severe or moderately severe symptoms. […] Regimen […] Severe symptoms: hypertonic saline bolus (e.g., 3% NaCl) […] Moderately severe symptoms: Consider hypertonic saline infusion (e.g., 3% NaCl infusion) […] Consider adding desmopressin (off-label) to prevent overcorrection in patients with sodium. […] Monitoring […] Serial serum sodium measurement […] While receiving hypertonic saline bolus: after each bolus (e.g., every 20 minutes) until symptoms resolve and sodium goal is met

• #2 Diagnosis and Treatment of Hyponatremia: Compilation of the Guidelines

  https://pmc.ncbi.nlm.nih.gov/articles/PMC5407738/

  Hyponatremia is a common water balance disorder that often poses a diagnostic or therapeutic challenge. […] The treatment for hyponatremia is chosen on the basis of duration and symptoms. For acute or severely symptomatic hyponatremia, both guidelines adopted the approach of giving a bolus of hypertonic saline. […] Although fluid restriction remains the first-line treatment for most forms of chronic hyponatremia, therapy to increase renal free water excretion is often necessary. Vasopressin receptor antagonists, urea, and loop diuretics serve this purpose, but received different recommendations in the two guidelines. […] A cutoff of 48 hours is usually used to differentiate acute from chronic hyponatremia. […] Both guidelines reached consensus that the limit (not the goal) should be around 10 mmol/L per day for both acute and chronic hyponatremia.

• #2 Evaluation and Management of the Hyponatremic Patient | Today’s Veterinary Practice

  https://todaysveterinarypractice.com/internal-medicine/evaluation-and-management-of-the-hyponatremic-patient/

  If emergent fluid resuscitation is necessary, the fluid used should have [Na] within 10 mmol/L of the patient’s serum [Na]. This is unlikely to cause a significant shift in the patient’s [Na]. A suitable fluid can be created by adding an appropriate volume of dextrose 5% to a standard replacement fluid. […] Recommendations for addressing hyponatremia depend on both the etiology and status of the patient. In dogs with acute water intoxication, serum [Na] should be promptly raised to 125 mmol/L. This can be achieved with the administration of 2 mL/kg of 3% sodium chloride (NaCl) IV over 10 to 60 minutes; this is expected to increase [Na] by 2 mmol/L and can be repeated until the animal’s status improves or [Na] is 4 to 6 mmol/L higher. […] In more stable patients, [Na] should be raised slowly; a maximum rate of 10 mmol/L/24 hr (<0.5 mmol/L/hr) is usually appropriate. The patient’s sodium deficit and time needed for its replacement must be determined: Sodium deficit (mmol) = (Target [Na] – Patient [Na]) × TBW.

• #2 Diagnosis and Management of Sodium Disorders: Hyponatremia and Hypernatremia | AAFP

  https://www.aafp.org/pubs/afp/issues/2015/0301/p299.html

  Hyponatremia and hypernatremia are common findings in the inpatient and outpatient settings. Sodium disorders are diagnosed by findings from the history, physical examination, laboratory studies, and evaluation of volume status. Treatment is based on symptoms and underlying causes. In general, hyponatremia is treated with fluid restriction (in the setting of euvolemia), isotonic saline (in hypovolemia), and diuresis (in hypervolemia). A combination of these therapies may be needed based on the presentation. Hypertonic saline is used to treat severe symptomatic hyponatremia. Medications such as vaptans may have a role in the treatment of euvolemic and hypervolemic hyponatremia. […] In patients with severe symptomatic hyponatremia, the rate of sodium correction should be 6 to 12 mEq per L in the first 24 hours and 18 mEq per L or less in 48 hours. A bolus of 100 to 150 mL of hypertonic 3% saline can be given to correct severe hyponatremia. Vaptans appear to be safe for the treatment of severe hypervolemic and euvolemic hyponatremia but should not be used routinely.

• #2 Hyponatremia – Endocrine and Metabolic Disorders – Merck Manual Professional Edition

  https://www.merckmanuals.com/professional/endocrine-and-metabolic-disorders/electrolyte-disorders/hyponatremia

  Treatment involves restricting water intake and promoting water loss, replacing any sodium deficit, and correcting the underlying disorder. […] If hypovolemic, 0.9% saline. […] If hypervolemic, fluid restriction, sometimes a diuretic, occasionally a vasopressin antagonist. […] If euvolemic, treatment of cause. […] In severe, rapid onset or highly symptomatic hyponatremia, partial rapid correction with hypertonic (3%) saline. […] Hyponatremia can be life threatening and requires prompt recognition and proper treatment. […] However, too-rapid correction of hyponatremia can cause neurologic complications, such as osmotic demyelination syndrome. […] The degree of hyponatremia, the duration and rate of onset, and the patient’s symptoms are used to determine which treatment is most appropriate.

• #2 Hyponatremia – Endocrine and Metabolic Disorders – Merck Manual Professional Edition

  https://www.merckmanuals.com/professional/endocrine-and-metabolic-disorders/electrolyte-disorders/hyponatremia

  In patients with hypovolemia and normal adrenal function, administration of 0.9% saline usually corrects both hyponatremia and hypovolemia. […] In hypervolemic patients, in whom hyponatremia is due to renal sodium retention (eg, heart failure, cirrhosis, or nephrotic syndrome) and dilution, water restriction combined with treatment of the underlying disorder is required. […] In euvolemia, treatment is directed at the cause (eg, hypothyroidism, adrenal insufficiency, diuretic use). […] When SIADH is present, severe water restriction (eg, 250 to 500 mL/24 hours) is generally required. […] Additionally, a loop diuretic may be combined with IV 0.9% saline as in hypervolemic hyponatremia. […] Lasting correction depends on successful treatment of the underlying disorder. […] When the underlying disorder is not correctable, as in metastatic cancer, and patients find severe water restriction unacceptable, demeclocycline 300 to 600 mg orally every 12 hours may be helpful by inducing a concentrating defect in the kidneys.

• #2 Hyponatremia Treatment & Management: Approach Considerations, Medical Care, Diet

  https://emedicine.medscape.com/article/242166-treatment

  For normovolemic (euvolemic) asymptomatic hyponatremic patients, free-water restriction is generally the treatment of choice. […] The addition of oral sodium chloride and loop diuretic to fluid restriction has been suggested as a second-line treatment option but this combination does not seem to be any more effective than fluid restriction alone. […] Pharmacologic agents can be used in some cases of more refractory SIADH, allowing more liberal fluid intake. […] The use of vaptans in appropriate setting can be beneficial, though limited. […] Tolvaptan treatment must be initiated in the hospital to avoid the possibility of rapid correction.

• #2 Hyponatremia | Diagnosis & Disease Information – Renal and Urology News

  https://www.cancertherapyadvisor.com/home/decision-support-in-medicine/hospital-medicine/hyponatremia/

  Tolvaptan is a selective vasopressin V2-receptor antagonist. It is indicated for the treatment of clinically significant hypervolemic and euvolemic hyponatremia that is symptomatic and has not been corrected with fluid restriction. In clinical trials, tolvaptan caused a significantly greater (P .0001) increase in serum sodium compared with placebo. The starting dose is 15 mg/d and can be titrated to 30 mg/d after at least 24 hours, to a maximum dose of 60 mg/d. […] In addition to treating the underlying cause of hyponatremia, the patients sodium level and osmolality should be monitored frequently. Patients treated with tolvaptan should be counseled about signs of osmotic demyelination syndrome, such as difficulty speaking or swallowing, drowsiness, confusion, and mood changes. They also should be instructed to immediately report any signs and symptoms of liver injury, such as fatigue, anorexia, right upper abdominal discomfort, dark urine, and jaundice.

• #2 Hyponatremia Treatment & Management: Approach Considerations, Medical Care, Diet

  https://emedicine.medscape.com/article/242166-treatment

  For patients with symptomatic acute hyponatremia (duration 48 h, such as after surgery), the treatment goal is to increase the serum sodium level by approximately 4-6 mEq/L/h to prevent brain herniation or until the neurologic symptoms subside. […] In contrast, in chronic symptomatic hyponatremia, the rate of correction should not exceed 4-6 or 4-8 mEq/L/d, depending on the ODS risk. Guidelines recommend no more than 18 mEq/L in the first 48 h. […] For asymptomatic patients, the treatment options below may be of use. […] Hypovolemic hyponatremia: For patients with reduced circulating volume, restore intravascular volume with an intravenous infusion of 0.9% saline or a balanced crystalloid solution at 0.5 to 1.0 mL/kg per hour to suppress the cause of physiologic vasopressin release. […] Hypervolemic hyponatremia: Treat patients who are hypervolemic with fluid restriction plus loop diuretics, and correction of the underlying condition.

• #2 Management of Hyponatremia in Heart Failure: Practical Considerations

  https://www.mdpi.com/2075-4426/13/1/140

  In recent years, association between loop diuretics and hypertonic saline solutions in the management of heart failure and associated hyponatremia became an area of interest in many studies. […] The main goal in the acute treatment of dilutional hyponatremia is to promote free water excretion in order to achieve normal serum sodium levels. […] Diuretic induced hyponatremia is more likely to be induced by a thiazide-type diuretic than a loop diuretic due to differences in their tubular site of action. […] For the purpose of this review, a database was created by compiling all articles that referenced the role of vaptans in heart failure. […] Vaptans inhibit AVP receptors, causing water excretion without loss of electrolytes, which differentiate them from diuretics. […] Tolvaptan has been extensively studied for its beneficial effects in heart failure and other conditions associated with hyponatremia. […] An inappropriate correction of hyponatremia may lead to osmotic demyelination syndrome (ODS). […] The daily limit of serum sodium correction recommended by the European Clinical Practice Guideline is 10 mEq/L in the first 24 h and 8 mEq/L during every 24 h thereafter.

• #2

  https://link.springer.com/article/10.1007/s10157-024-02606-3

  ODS is a severe complication that occurs when an overly rapid correction is caused in patients with chronic hyponatremia. The symptoms, including dysarthria, dysphagia, tetraplegia, disorientation, and coma, are usually irreversible, but depend on the severity of the initial demyelination. […] The three treatment strategies for overly rapid correction of hyponatremia are proactive, reactive, and rescue.

• #2 Hyponatremia – Diagnosis and Treatment : Emergency Care BC

  https://emergencycarebc.ca/clinical_resource/clinical-summary/hyponatremia-diagnosis-and-treatment/

  Hyponatremia – Diagnosis and Treatment […] Treatment for moderate symptoms: Infusion of 3% hypertonic saline at a rate of 0.5-2 mL/kg/hr until symptoms resolve and or sodium is corrected 4-6mEq/L. […] Treatment for severe symptoms: 100-150 mL bolus of 3% hypertonic saline over 10-20 minutes. This can be repeated up to 2 times until symptoms resolve and or sodium is corrected 4-6mEq/L. […] Treatment of moderate symptoms – 150 ml bolus 3% hypertonic saline. […] Treatment of severe symptoms – 150mL bolus of 3% hypertonic saline given over 10-20 minutes. This can be repeated 1 time until symptoms resolve and or sodium is corrected 4-6mEq/L. […] Hypovolemic hyponatremia requires fluid resuscitation with normal saline or lactate ringer’s 0.5-1.0mL/kg/hr with the goal of the patient becoming euvolemic. The sodium should be monitored every 6-8hrs. […] Euvolemic hyponatremia mainstay of treatment is a fluid restriction, generally 1-1.5L per day of fluids. […] Hypervolemic hyponatremia also requires fluid restriction of no more than 0.8L per day. For patients with congestive heart failure, chronic kidney disease, nephrotic syndrome, and cirrhosis: loop diuretics and salt restriction can be considered. […] When overcorrection occurs: Discontinue treatment immediately. […] Consider desmopressin. 2-4 micrograms every 8 hours IV. Monitor sodium every hour.

• #2 The Resuscitationist’s Approach to Severe Hyponatremia | Critical Care Medicine Section

  https://www.acep.org/criticalcare/newsroom/newsroom-articles/september2022/the-resuscitationists-approach-to-severe-hyponatremia

  For euvolemic or volume-depleted patients, give 3% saline. […] Serum sodium is raised slowly, typically no faster than 0.5mmol/L/hr or 4-8mmol/L in 24 hours to avoid osmotic demyelination syndrome. […] Overcorrection can also occur with intentional diuresis of hypervolemic patients. In this case, administration of desmopressin (DDAVP), an ADH analogue, can be administered in 2mcg IV doses every 8 hours as needed to prevent free water loss and slow sodium correction. […] Maintain sodium correction to 0.5mmol/L/hr or lower sodium by this same rate to the initial correction goal of 4-8mmol/L in 24 hours.

• #2

  https://link.springer.com/article/10.1007/s10157-024-02606-3

  This review provides a comprehensive overview of treatment of hyponatremia for better comprehension and improved clinical practice. […] Treatment of hyponatremia is usually more challenging than that of other electrolyte disorders due to its complexity and varying treatment goals and methods recommended by different guidelines. […] The six principles of treatment are as follows: 1. Correct promptly with hypertonic saline (usually 3% saline) if acute and symptomatic (moderate-to-severe). 2. If chronic/asymptomatic or minimally/mildly symptomatic, correct at a moderate rate, regardless of the correction method. 3. Discontinue medications associated with impaired renal free water excretion or natriuresis. 4. Adhere to upper correction limit if in patients at high risk for developing osmotic demyelination syndrome (ODS), except in acute/symptomatic (moderate-to-severe) cases. 5. If overly rapidly corrected, re-lower to low serum [Na+] with 5% dextrose (D5W) and/or desmopressin in carefully selected patients. 6. Perform frequent blood tests and monitor urine output after treatment initiation.

• #2 Hyponatremia Medication: Diuretics, Antibiotics, Arginine Vasopressin Antagonists, Urea Supplements, Vasopressin Analog

  https://emedicine.medscape.com/article/242166-medication

  Demeclocycline can cause insensitivity of distal renal tubules to the action of ADH and produce a nephrogenic diabetes insipidus. Effects are seen within 5 days and are reversed within 2-6 days following cessation of therapy. Demeclocycline can be nephrotoxic and cause nausea, vomiting, and photosensitivity. […] V2 receptor antagonism of AVP in the renal collecting duct results in aquaresis (excretion of free water). […] Arginine vasopressin antagonist (V1A, V2), indicated for euvolemic (dilutional) and hypervolemic hyponatremia, increases urine output of mostly free water, with little electrolyte loss. […] Selective vasopressin V2-receptor antagonist is indicated for euvolemic or hypervolemic hyponatremia, associated with SIADH or congestive heart failure. Initiate or reinitiate in hospital environment only. Tolvaptan can cause serious and potentially fatal liver injury; hence, duration of use is limited to 30 days to minimize risk of liver injury.

• #2 Vaptans for the treatment of hyponatremia | Nature Reviews Endocrinology

  https://www.nature.com/articles/nrendo.2010.229

  In conjunction with modest restriction of fluid intake, vaptans have proven safe and effective in treating chronic hypervolemic and euvolemic hyponatremia. […] The use of vaptans to treat acute, symptomatic forms of hyponatremia is still debatable, because their effects on plasma sodium vary unpredictably from patient to patient. […] Vaptan therapy is contraindicated in hypovolemic hyponatremia, a disorder associated with decreased total body water and sodium levels, and is ineffective in a form of inappropriate antidiuresis that is independent of vasopressin.

• #2 Managing Hyponatremia in Heart Failure | USC Journal

  https://www.uscjournal.com/articles/managing-hyponatremia-heart-failure?language_content_entity=en

  Lixivaptan (Cardiokine Inc./Biogen Idec) is a developmental oral, non-peptide, competitive AVP antagonist that selectively targets the V2 receptor. […] These results suggest a role for AVP in water retention in heart failure patients and demonstrate the potential of lixivaptan for the treatment of water retention. […] Hyponatremia is the most common electrolytic abnormality in clinical practice and has been shown to be present in one-quarter of patients admitted with heart failure. Treatment of heart failure with hyponatremia has been challenging with current therapy options. […] A new class of drugs, vasopressin receptor antagonists, may offer a more efficacious treatment option for heart failure patients with hyponatremia. Conivaptan, tolvaptan, and lixivaptan have all been shown to target arginine vasopressin receptors and increase electrolyte-free urine loss, hence causing a rise in sodium serum concentration.

• #2 Treatment of euvolemic hyponatremia in the intensive care unit by urea | Critical Care | Full Text

  https://ccforum.biomedcentral.com/articles/10.1186/cc9292

  Hyponatremia in the intensive care unit (ICU) is most commonly related to inappropriate secretion of antidiuretic hormone (SIADH). Fluid restriction is difficult to apply in these patients. We wanted to report the treatment of hyponatremia with urea in these patients. […] These data show that urea is a simple and inexpensive therapy to treat euvolemic hyponatremia in the ICU. […] The present data recall that urea is an effective and easy therapeutic choice to correct hyponatremia related to SIADH with special attention for patients in the intensive care unit. […] Our data show that urea is an efficient and safe method to manage hyponatremia in the intensive care unit. […] These data emphasise that urea combined with isotonic saline is an easy way to treat euvolemic hyponatremia in the ICU. […] In the intensive care unit, urea combined with isotonic saline is an easy and inexpensive way to treat euvolemic hyponatremia.

• #2

  https://link.springer.com/article/10.1007/s10157-024-02606-3

  The treatment principle of acute/symptomatic hyponatremia is to promptly elevate serum [Na+] to decrease cerebral edema and improve neurological symptoms. […] Preventing ODS development is essential in treating chronic/asymptomatic or symptomatic (minimal/mild to moderate) hyponatremia compared to acute/symptomatic hyponatremia; therefore, serum [Na+] should not be raised rapidly. […] The [Na+] of 3% saline is 513 mmol/L, and the urine tonicity of humans cannot exceed the tonicity of 3% saline; therefore, administering 3% saline certainly will elevate the serum [Na+]. […] Fluid restriction and solute loading are theoretically appropriate, and fluid restriction is usually the first-choice treatment in guidelines for treatment of chronic hyponatremia. […] Vasopressin V2 receptor (V2R) antagonists (called vaptans) cause a solute-free water diuresis, which is more appropriately termed aquaresis, by inhibiting the AVP activity in the renal collecting duct. Tolvaptan, an oral vasopressin V2R antagonist, is the only evidence-based medication for treating hyponatremia with efficacy demonstrated through RCTs.

• #2 Management of hyponatremia: Providing treatment and avoiding harm | MDedge

  https://blogs.the-hospitalist.org/content/management-hyponatremia-providing-treatment-and-avoiding-harm

  Patients need to be assessed quickly because those with serious neurologic signs or symptoms thought to be related to hyponatremia require urgent treatment with hypertonic saline to increase the serum sodium concentration, regardless of the underlying volume status, the cause of hyponatremia, or the time of onset. […] Patients with hypo-osmolar hyponatremia and serious signs or symptoms of cerebral edema (lethargy, respiratory depression, seizures) need rapid initial correction of the serum sodium level, as this is a true medical emergency. […] The goal of the initial, rapid phase of correction is to reverse cerebral edema. […] Patients with serious signs or symptoms should receive hypertonic (3%) saline at a rate of about 1 mL/kg/hour for the first several hours. […] After severe signs and symptoms have resolved, 3% saline is promptly discontinued and appropriate therapy is initiated based on the patients volume status and underlying cause of hyponatremia.

• #3 Hyponatremia – Diagnosis and Treatment : Emergency Care BC

  https://emergencycarebc.ca/clinical_resource/clinical-summary/hyponatremia-diagnosis-and-treatment/

  Hyponatremia – Diagnosis and Treatment […] Treatment for moderate symptoms: Infusion of 3% hypertonic saline at a rate of 0.5-2 mL/kg/hr until symptoms resolve and or sodium is corrected 4-6mEq/L. […] Treatment for severe symptoms: 100-150 mL bolus of 3% hypertonic saline over 10-20 minutes. This can be repeated up to 2 times until symptoms resolve and or sodium is corrected 4-6mEq/L. […] Treatment of moderate symptoms – 150 ml bolus 3% hypertonic saline. […] Treatment of severe symptoms – 150mL bolus of 3% hypertonic saline given over 10-20 minutes. This can be repeated 1 time until symptoms resolve and or sodium is corrected 4-6mEq/L. […] Hypovolemic hyponatremia requires fluid resuscitation with normal saline or lactate ringer’s 0.5-1.0mL/kg/hr with the goal of the patient becoming euvolemic. The sodium should be monitored every 6-8hrs. […] Euvolemic hyponatremia mainstay of treatment is a fluid restriction, generally 1-1.5L per day of fluids. […] Hypervolemic hyponatremia also requires fluid restriction of no more than 0.8L per day. For patients with congestive heart failure, chronic kidney disease, nephrotic syndrome, and cirrhosis: loop diuretics and salt restriction can be considered. […] When overcorrection occurs: Discontinue treatment immediately. […] Consider desmopressin. 2-4 micrograms every 8 hours IV. Monitor sodium every hour.

• #3 Hyponatremia Management | SAMSCA® (tolvaptan)

  https://www.samsca.com/what-is-hyponatremia/management

  Even in symptomatic patients, the sodium level should not be increased by 12 mEq/L in the first 24 hours, or by 18 mEq/L in the first 48 hours, to avoid osmotic demyelination syndrome (ODS). […] When patients become asymptomatic and sodium levels rise above 118 mEq/L, correction should be slowed to no more than 8 mEq/L in 24 hours to achieve the target sodium concentration. […] In hyponatremia of unknown duration, sodium correction should be managed cautiously because of brain adaptation to prolonged hyponatremia. […] Careful monitoring is critical because of increased risk of irreversible osmotic demyelination. Correction should be limited to no more than 10 to 12 mEq/L during the first 24 hours of treatment and 6 mEq/L/day subsequently. […] When treating asymptomatic hyponatremia, the goal is to prevent further decreases in serum sodium levels and to keep levels as close to normal as possible.

• #3 Hyponatraemia : Virtual Library

  https://resources.wfsahq.org/atotw/hyponatraemia/

  Appropriate management of hyponatremia is often challenging due to both numerous pathophysiological mechanisms and multiple underlying pathological conditions. […] The major risk associated with excessively rapid sodium correction is osmotic demyelination. This can result in severe and permanent neurological impairment or death. […] Current guidance suggests the desired increase in serum sodium in chronic hyponatremia should be 4-8 mmol/l/day for those at low risk of osmotic demyelination syndrome. […] For patients with severe symptoms, the entire 6mmol/l can be achieved during the first 6 hours of therapy, with subsequent treatment delayed until the next day. […] In hypovolaemic hyponatremia, the aim is to correct the volume deficit, as the relative water excess will correct itself via a water diuresis once circulating volume is restored.

• #3 The management of hyponatremia in cancer patients: a practical view in Spain

  https://www.oaepublish.com/articles/2394-4722.2019.39

  Additional treatments for hyponatremia must be avoided during the first 24 h of correction, except for associated furosemide in patients with heart failure or the addition of potassium chloride in patients with initial hypokalemia. […] Management will depend on the cause of hyponatremia. Diarrhea and vomiting are frequent side effects of chemotherapy. Antiemetics and adequate hydration and salt intake can be enough to correct non-severe hypovolemic hyponatremia, although i.v. isotonic saline can be required. […] In patients with a diagnosis of SIADH, fluid restriction can be attempted if patients are not candidates for surgery, hyperhydration, or nutritional supplements or support. […] Tolvaptan is approved for the treatment of SIADH-induced hyponatremia in adult patients. […] According to the SEOM algorithm, management will depend on the two scenarios mentioned above: the patient is a candidate vs. a non-candidate for chemotherapy.

• #3 Treatment With Vaptans Can Help Alleviate Hyponatremia in Cancer Patients

  https://www.oncnursingnews.com/view/treatment-with-vaptans-can-help-alleviate-hyponatremia-in-cancer-patients

  Tolvaptan is contraindicated in patients who have depletional hyponatremia, since they need their sodium levels raised quickly. […] In practice, tolvaptan should be given at a starting dose of 15 mg per day and increased to 30 mg after 24 hours if the patient has not responded, with a maximum dose of 60 mg per day.

• #3 Management of Hyponatremia: Focus on Psychiatric Patients

  https://www.uspharmacist.com/article/management-of-hyponatremia

  In the treatment of hypervolemic hyponatremia, water restriction is recommended as first-line therapy. Other therapies include diuretic therapy with furosemide, sodium restriction, or initiation of vaptan therapy. […] Euvolemic hyponatremia caused by thiazide diuretics, SIADH, or psychogenic polydipsia requires the most pharmacist intervention. […] Treatment of chronic asymptomatic hyponatremia induced by SIADH includes removal of the offending agent, water restriction, and then consideration of the initiation of vaptan therapy. […] Current treatment of psychogenic polydipsia includes reducing fluid intake, behavioral modification, and pharmacologic therapy in an attempt to decrease thirst. […] Therapy for hypovolemic hyponatremia involves treating the underlying cause and initiating fluid replacement until the patient is clinically euvolemic. Normal saline (NS) is initiated unless the patient presents with symptomatic hyponatremia in which hypertonic fluid (3% NS) is used.

• #3

  https://journals.lww.com/cjasn/fulltext/2024/01000/treatment_guidelines_for_hyponatremia__stay_the.21.aspx

  The strongest case for relowering the serum sodium to prevent osmotic demyelination can be made in patients at very high risk of developing the disorder (those with a sodium 105 mmol/L or patients with heavy alcohol use, severe hypokalemia, malnutrition, or advanced liver disease). […] Inadvertent overcorrection can be avoided by replacing urinary water losses or by stopping them with desmopressin (DDAVP). […] The technique, which has been called the DDAVP clamp, has been reported to successfully meet correction goals, but more data are needed comparing the technique to other therapeutic options. […] We strongly believe that abandoning established safeguards now is a bit like discarding your umbrella because you have remained dry in a rainstorm.

• #3 Hyponatremia – EMCrit Project

  https://emcrit.org/ibcc/hyponatremia/

  Furosemide diuresis is often a good option for patients with volume overload. […] Oral urea might be considered in patients without any history of hepatic encephalopathy, but its use in cirrhosis is controversial. […] Don’t use vaptans. It’s that simple, just don’t use them. […] If you use the DDAVP clamp, be sure to restrict the patient’s fluid intake.

• #3 Hyponatremia Medication: Diuretics, Antibiotics, Arginine Vasopressin Antagonists, Urea Supplements, Vasopressin Analog

  https://emedicine.medscape.com/article/242166-medication

  Oral urea is an osmotic agent that increases urinary free water excretion. It is effective, safe, well tolerated and cost effective for treatment of SIADH associated hyponatremia. […] Desmopressin (DDAVP), a synthetic analogue of the antidiuretic hormone arginine vasopressin, increases cyclic adenosine monophosphate (cAMP), in a dose-dependent manner, in renal tubular cells. This increases water permeability, resulting in decreased urine volume and increased urine osmolality.

• #3 Diagnosis and Treatment of Hyponatremia: Compilation of the Guidelines

  https://pmc.ncbi.nlm.nih.gov/articles/PMC5407738/

  Both guidelines recommend hypertonic saline (typically 3% NaCl) for acute or symptomatic hyponatremia. […] Hypertonic saline is an effective and potentially life-saving treatment for cerebral edema due to hyponatremia, as the high extracellular sodium concentration immediately removes water from the intracellular space. […] The required volume of hypertonic saline to reach a predefined increase in SNa can be estimated using the Adrogu-Madias or Barsoum-Levine formulae. […] The United States guideline lists vaptans as one of the pharmacologic options, if fluid restriction has failed. […] The European guideline did not recommend vaptans in moderate hyponatremia. […] Both guidelines suggest an interesting alternative to vaptans for chronic hyponatremia due to SIAD, namely urea. […] Urea induces an osmotic diuresis, thereby increasing renal free water excretion.

• #3 Management of hyponatremia: Providing treatment and avoiding harm | MDedge

  https://blogs.the-hospitalist.org/content/management-hyponatremia-providing-treatment-and-avoiding-harm

  After the initial serious signs or symptoms have been addressed with hypertonic saline, management should focus on limiting the rate of correction in patients with chronic hyponatremia or hyponatremia of unknown duration. […] A recent expert consensus panel suggested that the serum sodium level be raised by no more than 10 to 12 mmol/L during the first 24 hours of treatment, and by less than 18 mmol/L over 48 hours. […] Desmopressin is effective in preventing and reversing inadvertent overcorrection of hyponatremia. […] In addition, intravenous water (dextrose 5%) can be given alone or in combination with desmopressin to prevent or reverse an excessive increase in serum sodium. […] In most cases, water restriction is the mainstay of therapy. […] The use of tolvaptan in patients with SIADH has resulted in short-term increases in serum sodium.

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