blood extravasation
Noun: 1. The escape of blood from a ruptured vessel into the surrounding tissue: This is a medical term describing the process where blood leaks out of a blood vessel (such as a capillary, vein, or artery) and accumulates in the adjacent body tissues.
This term is used specifically in medical and clinical contexts to describe a pathological event or finding. It is often observed and discussed in relation to injuries, certain disease states, or as a result of medical procedures.
- The bruise on her arm was caused by blood extravasation following the impact.
- A common complication of intravenous therapy is blood extravasation at the injection site.
- The doctor noted signs of blood extravasation in the surrounding brain tissue on the scan.
- Histological finding: In pathology, "blood extravasation" is a key microscopic finding that indicates vessel damage. For example:
- Distinction from hemorrhage: While related, "extravasation" can specifically imply a localized leakage, often into interstitial spaces, whereas "hemorrhage" is a broader term for bleeding.
- Extravasate (verb): To force or leak out from a vessel into surrounding tissues.
- The contrast agent may extravasate from the vein during the injection.
- Extravasated (adjective): Describing blood or fluid that has leaked out.
- The surgeon cleaned the area of extravasated blood.
- Hematoma (specifically refers to a localized collection of extravasated blood, often clotted)
- Ecchymosis (a medical term for a bruise, which is a visible form of blood extravasation)
- Bruising
The term is compound, combining "blood" and "extravasation." Its core meaning is fixed as described. It is important to note that "extravasation" alone can refer to the escape of any fluid (e.g., lymph, intravenous medication) from its vessel. The modifier "blood" specifies the fluid involved.
- the leakage of blood from a vessel into tissues surrounding it; can occur in injuries or burns or allergic reactions