Drawdown
Drawdown (medicine)
Drawdown (pronounced: /ˈdrɔːdaʊn/) is a term used in the field of medicine to refer to the process of withdrawing a liquid from a well or other reservoir, often in the context of phlebotomy or other medical procedures. The term is derived from the English words "draw" and "down", reflecting the action of pulling something downwards.
Etymology
The term "drawdown" is a compound of the English words "draw", meaning to pull or drag, and "down", indicating a direction. It has been used in various contexts since the 19th century, but its application in medicine is more recent.
Related Terms
- Phlebotomy: The act or practice of drawing blood from patients or donors for testing, transfusions, donations, or research.
- Venipuncture: The process of puncturing a vein as part of a medical procedure, often to draw blood or to administer medication.
- Catheter: A thin tube made from medical grade materials that can be inserted into a body cavity, duct, or vessel to allow drainage, injection of fluids, or access by surgical instruments.
- Syringe: A simple reciprocating pump consisting of a plunger that fits tightly within a cylindrical tube, used to inject or withdraw fluids.
Usage in Medicine
In medicine, drawdown is often used to refer to the process of withdrawing blood or other fluids from a patient's body, typically using a syringe or similar device. This can be done for a variety of reasons, including diagnostic testing, treatment of certain conditions, or to collect blood for transfusions or donations.
The process of drawdown must be performed carefully to avoid causing unnecessary discomfort or injury to the patient, and to ensure that the correct amount of fluid is withdrawn. This often involves the use of specialized equipment and techniques, and may be performed by a trained healthcare professional such as a phlebotomist or nurse.
External links
- Medical encyclopedia article on Drawdown
- Wikipedia's article - Drawdown
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