Definition

1. Noun:
   • The process of exuding or passing out of a vessel into surrounding tissues: In medicine and biology, "extravasation" refers to the escape of a fluid, such as blood, lymph, or urine, from its proper vessel (like a blood vessel or lymphatic duct) into the surrounding tissue.
   • The pouring out of fumes or lava from a volcano: In geology, "extravasation" describes the eruption or outpouring of volcanic material, such as lava or fumes, onto the Earth's surface.
   • An extravasated liquid; the product of extravasation: The term can also refer to the fluid itself that has leaked out, such as a collection of blood or lymph in the tissues.

Usage Examples

• Noun (Medical Context):
  • The patient experienced significant swelling due to the extravasation of intravenous fluid into the surrounding skin.
  • A common complication of chemotherapy is the extravasation of the drug from the vein, which can damage local tissue.
• Noun (Geological Context):
  • The volcanic field was formed by the extravasation of basaltic lava over millions of years.
  • Geologists study the patterns of extravasation to understand ancient volcanic activity.

Advanced Usage

• "Extravasation of contrast media": A specific medical term for the leakage of radiographic dye from a blood vessel during an imaging procedure like a CT scan.
  • The radiologist noted a minor extravasation of contrast media at the injection site.
• "Lymphatic extravasation": Refers specifically to the leakage of lymph fluid.
  • The blockage led to lymphatic extravasation and subsequent edema in the limb.

Variants and Related Words

• Extravasate (verb): To force or let out (a fluid) from its proper vessel.
  • The damaged vein allowed blood to extravasate into the muscle.
• Extravasated (adjective): Describing a fluid that has escaped.
  • The surgeon drained the extravasated blood from the surgical site.

Synonyms

• Medical Context: Leakage, effusion, exudation, seepage.
• Geological Context: Eruption, outpouring, emission, discharge.

Related Phrases

• "Risk of extravasation": A common phrase in clinical settings warning of the potential for fluid to leak from an intravenous line.
  • Nurses monitor the IV site closely for any signs indicating a risk of extravasation.
• "Extravasation injury": Refers to tissue damage caused by the leaked fluid, particularly with irritating substances like certain medications.
  • Proper IV technique is crucial to prevent an extravasation injury from chemotherapy drugs.

Noun

1. the process of exuding or passing out of a vessel into surrounding tissues; said of blood or lymph or urine
2. (of volcanos) pouring out fumes or lava (or a deposit so formed)
3. an extravasated liquid (blood or lymph or urine); the product of extravasation