#1
Which vein is commonly used for venipuncture?
Cephalic vein
ExplanationIt is easily accessible and commonly used for venipuncture.
#2
What is the purpose of using a tourniquet during venipuncture?
To increase blood flow and make veins more visible
ExplanationIt helps in increasing blood flow and making veins easier to locate.
#3
What is the primary function of a phlebotomist?
To draw blood samples from patients
ExplanationTheir primary role is to safely and accurately collect blood samples.
#4
What is the most common complication of venipuncture?
Hematoma
ExplanationIt occurs due to blood leakage into surrounding tissues during or after venipuncture.
#5
What is the term for the process of removing blood from a vein for diagnostic purposes?
Phlebotomy
ExplanationIt is the medical procedure of drawing blood for diagnostic testing or medical treatment.
#6
What is the term for the swelling of tissues caused by blood leaking from a punctured vein?
Hematoma
ExplanationIt occurs when blood collects outside of the blood vessels due to vascular injury.
#7
Which of the following tubes is used for collecting blood samples for a complete blood count (CBC)?
Lavender-top tube
ExplanationIt contains an anticoagulant and is used for collecting blood samples for CBC.
#8
What is the correct order of draw for multiple blood samples?
Lavender-top tubes, green-top tubes, red-top tubes
ExplanationIt ensures accurate test results by preventing cross-contamination of additives.
#9
What is the purpose of palpating a vein before venipuncture?
To assess vein size and location
ExplanationIt helps in determining the suitability of the vein for venipuncture.
#10
Which of the following anticoagulants is commonly used in blood collection tubes?
Heparin
ExplanationIt prevents blood clotting and is commonly used in blood collection tubes.
#11
Which of the following veins is preferred for venipuncture in pediatric patients?
Dorsal venous network
ExplanationIt is preferred in pediatric patients due to its accessibility and reduced risk of injury.
#12
Which of the following is NOT a step in the correct venipuncture procedure?
Insert the needle at a 90-degree angle
ExplanationThe needle should be inserted at a shallower angle to avoid puncturing the vein through-and-through.
#13
Which of the following is NOT a complication of phlebotomy?
Hyperglycemia
ExplanationHyperglycemia is a metabolic condition and not a complication of phlebotomy.
#14
What is the maximum time limit for a tourniquet to be applied during venipuncture?
3 minutes
ExplanationIt helps prevent hemoconcentration and should not be applied for longer durations.
#15
What is the recommended angle for needle insertion during routine venipuncture?
90 degrees
ExplanationIt ensures proper entry into the vein and reduces the risk of vein injury or hematoma formation.
#16
Which organization is responsible for establishing standards and guidelines for phlebotomy practices in the United States?
Clinical and Laboratory Standards Institute (CLSI)
ExplanationCLSI develops standards to ensure quality and safety in laboratory testing and procedures.
#17
Which of the following is a potential complication of using a butterfly needle for venipuncture?
Infiltration
ExplanationIt occurs when fluid leaks into surrounding tissue instead of entering the vein.