Venesection

Venesection, also known as phlebotomy, is a medical procedure that involves the drawing of blood from a patient's vein. This procedure is often used for diagnostic purposes, but it can also be used as a treatment for certain conditions, such as polycythemia and hemochromatosis.

History

The practice of venesection dates back to ancient times. The Ancient Egyptians and Ancient Greeks both used venesection as a form of treatment for various ailments. The procedure was often performed by a barber surgeon, who would use a special tool called a fleam to make a small incision in the patient's vein.

Procedure

During a venesection, the patient's arm is first cleaned with an antiseptic to prevent infection. A tourniquet is then applied to the upper arm to increase the pressure in the veins and make them easier to see. The healthcare provider then inserts a needle into a vein, usually in the crook of the elbow, and collects the blood in a vial or syringe.

Uses

Venesection is most commonly used as a diagnostic tool. By analyzing the blood, healthcare providers can diagnose a wide range of conditions, from anemia to cancer. However, venesection can also be used as a treatment for conditions that cause an overproduction of blood cells, such as polycythemia and hemochromatosis.

Risks

Like any medical procedure, venesection carries some risks. These include bruising at the site of the needle insertion, infection, and in rare cases, fainting or feeling lightheaded.

See also

• Blood donation
• Blood test
• Bloodletting

Venesection Resources
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