Which IV site is commonly used first for adults and is generally avoided for long-term therapy due to movement?

• A. Antecubital fossa
• B. Dorsal hand or forearm vein
• C. Scalp vein
• D. Vein of the foot

Answer: (B)

When starting IV therapy in adults, clinicians look for a vein that’s easy to access, comfortable for the patient, and stable enough for the duration of treatment. The dorsal hand or forearm veins fit this well: they’re superficial, easy to locate, and typically tolerate short-term IV infusions with minimal discomfort.

But these veins are near joints and move a lot with daily activity. That movement can cause the cannula to shift, become irritated, or infiltrate, which makes them less reliable for long-term therapy. For extended IV use, teams often seek more stable sites or even consider a central line if longer access is needed.

Other options described, like scalp veins, are not common in adults, and foot veins are avoided due to higher risk of complications and poor flow. So the dorsal hand or forearm vein is the best fit for initial, short-term IV access in adults, with movement being the reason it isn’t favored for long-term therapy.