Clinical Medical Assistant Certification Exam Practice Question
Which of the following ranges of needle gauges Is most appropriate for performing a venipuncture by the syringe method?
Correct Answer: B
Rationale: Option B (20-23 gauge) is the most appropriate range for venipuncture using the syringe method. This gauge size balances sufficient lumen diameter for blood flow while minimizing discomfort for the patient. It allows for efficient blood collection without risking vein damage.
Option A (15-18 gauge) is too large for routine venipuncture, typically reserved for trauma or large volume transfusions, which may cause unnecessary pain. Options C (25-26 gauge) and D (27-28 gauge) are too small, leading to slower blood draw rates and increasing the risk of hemolysis or clotting. These gauges are generally used for pediatric patients or delicate veins, not standard venipuncture.
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