18 Questions
Why is it important to select the right gauge of the needle during venipuncture?
To prevent hemolysis of the sample
Which of the following is an antiseptic used in venipuncture procedures?
Hydrogen peroxide
What is the purpose of using a tourniquet during venipuncture?
To make veins more visible and easier to access
Why are EPA-registered sodium hypochlorite solutions used in venipuncture procedures?
To disinfect surfaces and spills
What should be used to dispose of needles after venipuncture procedures?
Needle and sharps disposal containers
Which of the following is NOT an antiseptic used in venipuncture procedures?
Ethanol
What is the purpose of using additives in Evacuated Tube System (ETS) tubes?
To prevent clotting and preserve components
Which color tube cap indicates the presence of Sodium Citrate 1:9 as an additive?
Light Blue
Why is it important for phlebotomists to follow the prescribed order of draw when collecting blood samples?
To avoid contaminating the collected blood samples
Which additive is used in blood collection tubes to prevent clotting and contains Lithium?
Herapin Lithium
What is the purpose of a clot aviator in an Evacuated Tube System (ETS) tube?
To encourage blood clotting
Which color tube cap is associated with Potassium Oxalate Monohydrate and Sodium Fluoride as additives?
Grey
What is the main difference between evacuated tube systems and syringe systems in phlebotomy?
Evacuated tube systems allow for blood collection into multiple tubes in a single venipuncture, whereas syringe systems only allow for one tube at a time.
Which component is part of the syringe system in phlebotomy?
Resheathing feature on the needle
What is the function of winged infusion needles in phlebotomy?
To draw blood from patients with small or difficult veins
Why are evacuated tubes preferred over syringe systems for blood collection?
Evacuated tubes prevent specimen contamination better than syringe systems.
Which type of needle is commonly used in evacuated tube systems for phlebotomy?
Multi-sample needles
What is the significance of color-coding in evacuated tubes used in phlebotomy?
To differentiate between different types of samples collected
Study Notes
Venipuncture Needle Selection
- Selecting the right gauge of the needle during venipuncture is crucial to prevent patient discomfort and ensure smooth blood flow.
Antiseptics in Venipuncture
- An antiseptic used in venipuncture procedures is EPA-registered sodium hypochlorite solutions.
- Iodine is not an antiseptic used in venipuncture procedures.
Tourniquet Purpose
- The purpose of using a tourniquet during venipuncture is to restrict blood flow, making it easier to access the vein.
Needle Disposal
- Needles should be disposed of using a sharps container after venipuncture procedures.
Evacuated Tube System (ETS) Tubes
- Additives are used in ETS tubes to prevent clotting, promote cell separation, and preserve blood samples.
- The purpose of a clot activator in an ETS tube is to promote clotting.
- Sodium Citrate 1:9 as an additive is indicated by a blue color tube cap.
- Lithium is used as an additive in blood collection tubes to prevent clotting.
- Potassium Oxalate Monohydrate and Sodium Fluoride as additives are indicated by a grey color tube cap.
Order of Draw
- Phlebotomists must follow the prescribed order of draw when collecting blood samples to prevent contamination and ensure accurate test results.
Phlebotomy Systems
- The main difference between evacuated tube systems and syringe systems in phlebotomy is the method of blood collection and storage.
- A component of the syringe system in phlebotomy is a needle and syringe.
- Winged infusion needles are used in phlebotomy for blood collection and are commonly used in syringe systems.
- Evacuated tubes are preferred over syringe systems for blood collection due to their ease of use, minimal blood waste, and reduced risk of contamination.
- The type of needle commonly used in evacuated tube systems for phlebotomy is a double-pointed needle.
- Color-coding in evacuated tubes used in phlebotomy is significant as it indicates the type of additive present in the tube.
Test your knowledge on the equipment and supplies used in venipuncture procedures, including the order of draw and proper tool selection. Ensure safe and accurate blood collection by understanding the correct tools and procedures.
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