Basics Flashcards
Most common site
Antecubital fossa
H pattern
Veins for venipuncture
Located near the center of the antecubital fossa
Median cubital vein
Preffered vein
Median cubital
Fairly well anchored
Cephalic vein
Often harder to palpate
Cephalic vein
Not well anchored
Basilic vein
Rolls easily
Basilic vein
Increased eisk of puncturing a median cutaneous nerve branch or the brachial artery
Basilic vein
Veins that Can be used for venipuncture
- back of the hand
- wrist
Vein that should never be used
- underside of the wrist
Veins that can be used but not without the permission of the patient’s physician
Foot
Ankle
Leg
Turbidity of serum
Clear
Turbidity of plasma
Clear to slightly hazy
Turbidity of nonfasting serum with lipids
Cloudy
Centrifugation of serum
10 minutes RCF at 1000-2000g
It contains fibrinogen
Plasma
Stat and TAT are often collected in tubes containing _____ because they can be centrifuged immediately to obtain plasma
Heparin
Contains both cells and plasma
Whole blood
Must be collected in an anticoagulant tube to keep it from clotting
Whole blood
Used for most POCT and hema especially in acute care and stat
Wholr blood
Methods of veni
ETS
Needle and syringe
Butterfly set
Why ETS is preferred
Minimize the risk of spx contamination and exposurr of blood
Used on small, fragile, damaged veins
Needle and syringe
Discourahrd by CLSI due to safety and spx QUALITY issues
Needle and syringe
Can be used with the ETS or a syringe
Butterfly set
For infants and children method
Butterfly set
Hand veins method
Butterfly set
Method used for difficult-draw situations
Butterfly set
Pathway activated by glass stopper
Intrinsic
Activates extrinsic pathway
Factor 3
Restrict venous flow but not arterial flow
Tourniquet
Tourniquet must not be left longer than
1 minute
Size of tourniquet
1 inch wide x 15 inches long
Gauge and bore are ____ related
Inversely
Preferred needle length
1 inch
Considered standard for routine venipuncture
21 gauge
Components of ETS
Multisample needle
Evacuated tubes
Tube holder
Includes a plastic syringe, a needle, and a transfer device
Syringe system
Gauge for pedia
23
Accuvein is a Handheld device that emits ______ and is held about ___ inches over the potential phlebotomy site
Infrared light
7
For serum/chemistry and serology stopper
Red (glass)
Red (hemogard)
For whole blood/hematology stopper
Lavender glass
Lavender plastic
For molecular diagnostics
Pink
White