Which gauge size is typically used for routine IV therapy in adults?

The gauge size typically used for routine IV therapy in adults is 20 to 22 gauge. This size is preferred because it strikes a balance between providing adequate flow rates for delivering fluids and medications while minimizing trauma to the veins and discomfort to the patient. A 20 to 22 gauge catheter is sufficient for most routine procedures, including hydration and the administration of medications.

When considering larger gauge sizes, such as 16 to 18 gauge, they are more suitable for situations requiring rapid fluid infusion, such as trauma or surgical environments. These larger gauges can be more painful for the patient and may cause more damage to smaller veins.

On the other hand, smaller gauge sizes, such as 22 to 24 gauge, are generally used for pediatric patients or for specific circumstances where venous access is challenging. While they can still be used in adults, their flow rates may not be adequate for certain therapies, making them less ideal for routine IV therapy.

In summary, the 20 to 22 gauge size is the standard for routine IV therapy in adults, ensuring a balance of flow rates and patient comfort.