Diameter
Yes, the larger the gauge the smaller the needle size.
Which of the following needles has the widest lumen?
25 gauge is the size of the needle not the syringe. they are measured in cc's
No - the two have no relationship to each other at all.
Butterfly needles
21 gauge
Gauge is a measure of how large the opening of the needle is. The larger the number the smaller the hole. Most venipuncture is done with a 16-24 gauge needle, depending on the size of the patient and the location of the vein. A 10 gauge needle would be huge.
Yes, a 30 gauge needle is larger than a 31 gauge needle. In the gauge system, a higher number indicates a smaller diameter, so a 31 gauge needle is thinner than a 30 gauge needle. Therefore, the 31 gauge needle would be the smaller of the two.
A 25-gauge needle is smaller in diameter than a 23-gauge needle. The larger the gauge number, the thinner the needle, so a 25-gauge needle has a smaller lumen compared to a 23-gauge needle. This means that for tasks requiring finer needles, such as pediatric or cosmetic procedures, a 25-gauge needle would be preferred.
It is determined by the size of the veins
Guage 18 in medicine is the size of a needle either for injections or for IV insertion.
Size and condition of the vein