Keyword Analysis & Research: butterfly needle with vacutainer

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Frequently Asked Questions

What is a butterfly needle in venipuncture?

A venipuncture is when a phlebotomist accesses a vein to draw blood. A phlebotomist is a medical professional who specializes in drawing blood. Butterfly needles are often used on people who might be difficult to perform venipuncture on. These include: The butterfly needle requires a shallower angle compared to an IV catheter.

Do butterfly needles really work?

A 2016 study found that using butterfly needles to draw blood reduced rates of blood breaking down by half compared to using a person’s IV catheter to draw a blood sample. Another earlier study found the type of needle used was one of the strongest predictors that a blood sample would or wouldn’t get destroyed.

What are the different sizes of butterfly needles?

While all butterfly needles are similarly designed, there are variations. Butterfly needles are measured in gauges and typically range in size from 18-gauge to 27-gauge. The higher the gauge, the smaller the needle. By way of illustration, a 27-gauge needle is the size commonly used for insulin injections.

Can you use butterfly needles for IV infusions?

As a rule of thumb, butterfly needles should only be used for IV infusions of five hours or less. Butterfly needles can be a useful way to draw blood or to give IV fluids. However, there may be some times that using a different type of needle may be necessary.


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