Understanding the Most Common Needle Gauges for Venipuncture
What are the most common needle gauges for venipuncture with a syringe?
A) 18 and 20 gauge; larger gauge allows for faster blood flow
B) 22 and 24 gauge; smaller gauge reduces pain and bruising
C) 16 and 18 gauge; larger gauge is more versatile for different procedures
D) 20 and 22 gauge; smaller gauge is more suitable for fragile veins
Answer:
The 20 and 22 gauge needles are most common for venipuncture as they minimize discomfort and bruising, while still being efficient for blood collection.
Explanation:
The most common needle gauges for venipuncture with a syringe are typically 20 and 22 gauge. This choice is because the 20 and 22 gauge needles are generally more suitable for a wide range of veins and can minimize damage to the vein and surrounding tissues. The smaller diameter of these needles reduces discomfort for the patient and is less likely to cause bruising compared to larger gauges.
Larger gauges, such as 18, may be used when a faster blood flow is required or when the vein is larger and can accommodate a bigger needle without damage. However, for most standard procedures involving venipuncture, the 20 and 22 gauge needles strike a balance between patient comfort and the efficiency of blood collection.