venipuncture

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venipuncture

A nurse performs a venipuncture on a patient's arm.

Definition

Noun: 1. (Medicine): A medical procedure involving the puncture of a vein through the skin, typically performed to withdraw a blood sample for laboratory analysis, to start an intravenous (IV) drip for fluid or medication administration, or to inject a substance such as medication or a radiopaque dye for imaging studies.

Usage Examples
  • Noun:
    • The nurse performed a quick venipuncture to collect blood for the cholesterol test.
    • Before the CT scan, a venipuncture is necessary to inject the contrast dye.
    • Skill in venipuncture is essential for phlebotomists and many other healthcare professionals.
Advanced Usage
  • Therapeutic Venipuncture: While commonly diagnostic, venipuncture can also be therapeutic, such as in phlebotomy for conditions like hemochromatosis (excess iron) or polycythemia (excess red blood cells).
  • Site Selection: Common sites for venipuncture include the median cubital vein in the antecubital fossa (inner elbow), cephalic vein, and basilic vein. For infants or difficult access, other sites may be used.
Variants and Related Words
  • Phlebotomy (n): The broader practice of drawing blood from a vein, often used synonymously with venipuncture in the context of blood collection.
  • Intravenous (IV) Cannulation (n): A specific type of venipuncture where a cannula (a small, flexible tube) is inserted into a vein to provide ongoing access for fluids or medications.
Synonyms
  • Blood draw (n, informal): A common lay term for a venipuncture performed to collect a blood sample.
  • Venepuncture (n, chiefly British English): An alternative spelling of the same word.
Related Phrases / Procedures
  • To perform a venipuncture: The standard phrase describing the action of carrying out the procedure.
    • The technician will now perform a venipuncture on your left arm.
  • Difficult venipuncture: A term used when a patient's veins are hard to locate or access, requiring advanced skill or techniques.
    • Due to the patient's history of chemotherapy, this was a difficult venipuncture.
venipuncture

A nurse performs a venipuncture on a patient's arm.

Noun
  1. (medicine) puncture of a vein through the skin in order to withdraw blood for analysis or to start an intravenous drip or to inject medication or a radiopaque dye