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Related Concept Videos

Hyperosmolar Hyperglycemic State01:21

Hyperosmolar Hyperglycemic State

Hyperosmolar Hyperglycemic State, or HHS, is a serious and life-threatening complication of type 2 diabetes mellitus. It is characterized by three main features: severe hyperglycemia, profound dehydration, and elevated serum osmolality, all occurring without significant ketoacidosis.HHS typically develops in older adults or individuals with limited access to fluids. This may result from illness, cognitive impairment, or medications such as diuretics or corticosteroids. These factors reduce...
Disorder of Water Balance01:29

Disorder of Water Balance

Water balance disorders are medical conditions that occur when there is a deviation from the body's water volume or osmolarity, disrupting normal homeostasis and leading todehydration, hypotonic hydration, hyperhydration, edema, or water intoxication.
Dehydration
Dehydration occurs when the body loses fluids (particularly water).
Causes:
The major causes of dehydration include excessive sweating, fever, vomiting, diarrhea, and diuresis.
Signs and Symptoms:
Symptoms primarily include intense...
Diabetes Insipidus II: Pathophysiology01:22

Diabetes Insipidus II: Pathophysiology

Normally, water balance is maintained through three interconnected mechanisms: the hypothalamic thirst center, the synthesis and release of antidiuretic hormone (ADH, or vasopressin), and the kidneys' responsiveness to this hormone. ADH is synthesized in the hypothalamus, released from the posterior pituitary, and acts on the distal nephron, allowing water reabsorption and concentrated urine production.Diabetes Insipidus and Its TypesIn diabetes insipidus (DI), this regulatory system is...
Ionic Bonds00:42

Ionic Bonds

When atoms gain or lose electrons to achieve a more stable electron configuration they form ions. Ionic bonds are electrostatic attractions between ions with opposite charges. Ionic compounds are rigid and brittle when solid and may dissociate into their constituent ions in water. Covalent compounds, by contrast, remain intact unless a chemical reaction breaks them.Opposing Charges Hold Ions Together in Ionic CompoundsIonic bonds are reversible electrostatic interactions between ions with...
Antihypertensive Drugs: Potassium-Sparing Diuretics01:28

Antihypertensive Drugs: Potassium-Sparing Diuretics

Liddle syndrome is a genetically inherited form of hypertension characterized by the overactivity of epithelial sodium channels in the nephron, the functional unit of the kidney. This heightened activity leads to increased sodium reabsorption and excessive excretion of potassium. To counteract this, potassium-sparing diuretics such as amiloride are used. They function by blocking these sodium channels, thereby reducing the influx of sodium into the epithelial cells and minimizing the loss of...
Diabetes Insipidus I: Introduction01:29

Diabetes Insipidus I: Introduction

Definition Diabetes insipidus is a disorder marked by the production of large amounts of dilute urine because of impaired vasopressin production, release, or kidney response. The lack of effective vasopressin action limits water reabsorption in the renal collecting ducts, which leads to excessive urinary water loss and intense thirst.Clinical PresentationIndividuals with diabetes insipidus report persistent thirst and very high urine output. In severe cases, fluid intake can reach up to 20...

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Isolation and Adoptive Transfer of High Salt Treated Antigen-presenting Dendritic Cells
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Isolation and Adoptive Transfer of High Salt Treated Antigen-presenting Dendritic Cells

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[Hypo- and hypernatremia].

C Palm1, A Wagner, P Gross

  • 1catrin.palm@uniklinikum-dresden.de

Deutsche Medizinische Wochenschrift (1946)
|December 25, 2010
PubMed
Summary
This summary is machine-generated.

Hyponatremia, a common electrolyte disorder, often causes mental impairment. Vaptans, a new drug class, show promise in safely and effectively treating euvolemic and hypervolemic hyponatremia.

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Area of Science:

  • Internal Medicine
  • Nephrology
  • Endocrinology

Context:

  • Hyponatremia is a prevalent electrolyte disorder linked to mental impairment.
  • It presents in hypovolemic, hypervolemic, and euvolemic forms, each with distinct pathogenetic mechanisms.
  • Current treatments for euvolemic and hypervolemic hyponatremia are often unsatisfactory.

Purpose:

  • To review the pathophysiology and treatment of hyponatremia.
  • To introduce vaptans as a novel therapeutic class for hyponatremia.
  • To evaluate the efficacy and safety of vaptans in clinical trials.

Summary:

  • Hyponatremia, defined by low serum sodium (<135 mmol/L), is associated with cognitive deficits.
  • Vaptans, orally active vasopressin antagonists, offer a specific and effective treatment for euvolemic and hypervolemic hyponatremia.
  • Clinical trials demonstrate vaptans to be safe and effective, with European certification for euvolemic hyponatremia.

Impact:

  • Vaptans represent a significant advancement in managing hyponatremia.
  • This new pharmacological class provides a targeted approach to correcting electrolyte imbalances.
  • Improved treatment options for hyponatremia may lead to better patient outcomes and reduced morbidity.