Venipuncture by ETS Flashcards
Also called as a vacuum blood collection system
Evacuated Tube System
The most frequently used method for performing venipuncture.
Evacuated Tube System`
Evacuated Tube System eliminates the need for transfer of specimens. True or False
True
uses a shield that locks over the needle tip after completion of the venipuncture
BD Vacutainer Eclipse blood collection needle
ETS minimizes the risk of biohazard exposure. True or False
True
ETS is consists of:
- Double-pointed/ Multi-sample needle/
- Plastic holder or adapter
- Vacuum blood collection/
color-coded evacuated tubes - Syringe
True or False
False - ETS doesn’t need a syringe
ETS needle length for routine venipuncture, 1-inch, and 1.7-inch lengths are used. True or False
False - For routine venipuncture, 1-inch and 1.5-inch lengths are used.
a plastic sleeve into which the phlebotomist screws the double-pointed needle.
Holder or Adapter
The Holder or Adapter has the ability to accommodate collection tubes of different sizes. True or False
True
Collection tubes are called evacuated tubes because they contain a premeasured amount of vacuum. True or False
True
After inserting the longer needle into the vein, the phlebotomist pushes the tube into the holder so that the shorter needle pierces the stopper. True or False
True
Anticoagulants prevent clotting by binding calcium or inhibiting thrombin in the coagulation cascade. True or False
True
Heparin prevents
clotting by inhibiting the formation of thrombin necessary to convert fibrinogen to fibrin in the coagulation process. True or False
True
Most common anticoagulants that work by binding calcium
Ethylenediaminetetraacetic acid (EDTA), Citrates, Oxalates
All tubes containing an anticoagulant must be gently inverted 3 to 8 times immediately after collection to mix the contents and to avoid micro clot formation. True or False
True
The order of draw for ETS is different from the order of draw when filling tubes from a syringe. True or False
False - it is the same
The order of draw:
- Blood cultures (yellow stopper tubes, culture bottles)
- Lavender stopper tubes (EDTA)
- Red/gray, gold stopper tubes (serum separator tubes), red stopper plastic tubes (clot activator), and red stopper glass tubes
- Green stopper tubes and light green (plasma separator tubes) (heparin)
- Light blue stopper tubes (sodium citrate)
- Yellow/gray or orange stopper tubes
(thrombin clot activator) - Gray stopper tubes (potassium
oxalate/sodium fluoride)
True or False
False
- Blood cultures (yellow
stopper tubes, culture bottles) - Light blue stopper tubes (sodium citrate)
- Red/gray, gold stopper tubes (serum separator tubes), red stopper plastic tubes (clot activator), and red stopper glass tubes
- Green stopper tubes and light green (plasma separator tubes) (heparin)
- Lavender stopper tubes (EDTA)
- Gray stopper tubes (potassium
oxalate/sodium fluoride) - Yellow/gray or orange stopper tubes
(thrombin clot activator)
often preferred over an evacuated tube system when drawing blood from patients with small or fragile veins.
Syringes
One of the advantages of using a syringe when drawing blood is the phlebotomist is able to control the suction pressure on the vein by slowly withdrawing the syringe plunger. True or False
True
The procedure of venipuncture using ETS is the same as venipuncture by syringe. True or False
True
It is important to verify if the patient has fasted, has allergies to latex, or has had previous problems with venipuncture. True or False
True
The tourniquet is applied 4 to 5
inches above the antecubital fossa. True or False
FALSE - 3 TO 4
It is important to palpate the area in a vertical and horizontal direction to locate a large vein and to determine the depth, direction, and size. True or False
True
The vein of choice before the cephalic vein
median cubital
Clean the site with 70 percent isopropyl alcohol in concentric circles moving inward and allow it to air dry. True or False
False - it should be outward motion
The patient should be instructed not to “pump” or “continuously clench” the fist to prevent hematoma. True or False
False - to prevent hemoconcentration
Anchor the vein by placing the thumb of the non-dominant hand 1 to 2 inches below the site and pulling the skin taut. True or False
True
Smoothly insert the needle into the vein at a 10-to15-degree angle with the bevel up until you feel a lessening of resistance. True or False
False - 15-to-30-degree
Remove the tube first before removing the needle. True or False
True
