Natriuresis
Natriuresis (pronounced: na·tri·u·re·sis, /ˌnætriːˈjʊərɪsɪs/) is a medical term that refers to the excretion of sodium in the urine. It is a process that is primarily facilitated by the kidneys under the regulation of certain hormones, including aldosterone and atrial natriuretic peptide (ANP).
Etymology
The term "Natriuresis" is derived from the Latin "natrium" meaning sodium, and the Greek "uresis" meaning making water, or urination.
Mechanism
Natriuresis is a process that occurs in the kidneys. Sodium is filtered out of the blood by the glomeruli and is then reabsorbed back into the blood in the renal tubules. The amount of sodium that is reabsorbed is regulated by hormones such as aldosterone and ANP. When these hormones signal the kidneys to excrete more sodium, this results in natriuresis.
Clinical Significance
Natriuresis can be a sign of various medical conditions. For example, it is often seen in patients with congestive heart failure, where the body attempts to decrease fluid volume and blood pressure by excreting more sodium. It can also occur in response to certain medications, such as diuretics, which are used to treat conditions like hypertension and edema.
Related Terms
- Diuresis: The increased production of urine by the kidneys.
- Hypernatremia: A high concentration of sodium in the blood.
- Hyponatremia: A low concentration of sodium in the blood.
- Natriuretic Peptides: Hormones that promote natriuresis.
See Also
External links
- Medical encyclopedia article on Natriuresis
- Wikipedia's article - Natriuresis
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