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Phlebotomy
week 1 terms
Term | Definition |
---|---|
phlebotomy | incision into the vein for the purpose of drawing blood |
fleam | a solid handle and blade that extends at a right angle from the handle; most often used for cattle |
lancet | bladed tool that flips open to expose the wedge shaped vein; earliest tools manufactured for bloodletting |
leeches | blood-sucking animal that are applied to an area for a duration of time and then removed with heat or fire |
scarifications | twenty razor blades bunched together that were used to scrape the surface of the skin |
4 humors | Blood, phlegm, black bile, yellow bile; first physician-led bloodletting practice; beleived that blood could stagnate, therefore blood must be let out |
Hx of Barber Pole | common barber shop poles represents the treatment performed by barberes. Red: blood, White: tourniquet used to tie off arm, Pole: stick a patient squeeezes to dilate veins |
tourniquet | a device (typically a flat strip of stretchy material) applied to a limb prior to venipuncture to restrict venous flow, which distends the veins and makes them easier to find and pierce with a needle |
dilate | to make wider or larger; cause to expand |
blood letting | the withdrawal of blood from a patient to cure or prevent illness and disease |
transfusion | common procedure in which blood is transferred from an IV into a vein |
standard precaution | a set of infection control practices used to prevent transmission of diseases that can be acquired by contact with different infectious agents |
biosafety | term used to describe the safe handling of biologic substances that pose a risk to health |
HIV | human immunodeficiency virus |
Hepatitis B | hepatitis B virus; infects the liver; passed through blood, semen or other body fluids |
Hepatitis C | hepatitis C virus; infects the liver; passed through blood, semen or other body fluids; no vaccine available |
Parenteral Administration | when a medication is administered through anythign other than the digestive tract (mouth, rectum); Ex: IV |
Contact Transmission | direct and indirect transmission |
Direct transmission | Involves body-surface to body-surface contact and physical transfer |
Indirect transmission | Involves contact of susceptible host with a contaminated intermediate object; Ex: needles |