Fluid volume

Definition

Fluid volume refers to the total amount of fluid within the body's compartments, including intracellular and extracellular spaces. It is critical for maintaining homeostasis and proper physiological function.

5 Must Know Facts For Your Next Test

1. Fluid volume balance is regulated by mechanisms such as antidiuretic hormone (ADH), aldosterone, and the renin-angiotensin system.
2. Hypovolemia (decreased fluid volume) can result from dehydration, hemorrhage, or excessive diuretic use.
3. Hypervolemia (increased fluid volume) can be caused by conditions such as heart failure, kidney disease, or excessive intravenous fluid administration.
4. Electrolytes like sodium and potassium play a significant role in maintaining fluid volume balance within the body.
5. Monitoring fluid volume status is essential for patients receiving intravenous therapy to avoid complications like edema or dehydration.

Review Questions

• What are the primary mechanisms that regulate fluid volume in the body?
• How does hypovolemia differ from hypervolemia in terms of causes and symptoms?
• Why is it important to monitor electrolyte levels when assessing a patient's fluid volume status?

Related terms

Homeostasis: The body's ability to maintain stable internal conditions despite external changes.

Antidiuretic Hormone (ADH): A hormone that helps regulate water balance by increasing water reabsorption in kidneys.

Electrolytes: Minerals in body fluids that carry an electric charge, crucial for various bodily functions.