Intermediate
Technical
In the Industry Vocabulary Test
vasopressin
Antidiuretic hormone that regulates water retention and blood pressure in the body.
Full Definition
Vasopressin, also known as antidiuretic hormone (ADH), is a nonapeptide hormone synthesized in the hypothalamus and released from the posterior pituitary gland. It plays crucial roles in maintaining water homeostasis by increasing water reabsorption in the kidneys and regulating blood pressure through vasoconstriction. Vasopressin levels are tightly regulated by plasma osmolality and blood volume, and its dysfunction can lead to conditions such as diabetes insipidus or syndrome of inappropriate ADH secretion (SIADH).
Usage
Usage note: Can be abbreviated as ADH after first mention; 'antidiuretic hormone' preferred in patient education materials.
In Context
- "Plasma vasopressin levels were elevated in response to the hyperosmolar state." — Laboratory report
- "The patient was started on vasopressin replacement therapy for central diabetes insipidus." — Treatment plan
Also known as
antidiuretic hormone
ADH
arginine vasopressin
Don't confuse with
oxytocin
desmopressin