Different Types of IV Gauge Needles: 18 | 合法醫療器材資訊網

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One of the of the important things to know when starting an IV is the proper needle size to use. IV needles are sized by gauges, and the smaller the gauge number, the bigger the needle will be. In this article and video, I’ll discuss the three most common IV gauge needles you’ll encounter as a nurse: 18 gauge, 20 gauge, and 22 gauge.

As a new nurse, you may find it difficult to spot the different sized gauges. Luckily, most manufacturers color code their IV needles. Here’s a little rhyme you can use to help you remember what colors correspond to what sized gauge: 22 is blue and 18 is green. Pink is the one in the middle.

There are other IV gauge sizes besides those, although they aren’t as common. There is a size 24 gauge that is mostly used for pediatrics due to its small size. There are also 16 gauge needles that are used primarily for ICU or surgery.

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