Where is an IV ideally placed for most adults?

• A. Lower extremities.
• B. Upper extremities, preferably the hand or wrist, avoiding joints.
• C. Through a joint to maximize access.
• D. The dominant arm is preferred for placement.

Answer: (B)

For most adults, placing a peripheral IV in the upper extremities is preferred because these veins are easier to access, easier to secure, and easier to monitor for complications. The veins in the hand or wrist are readily reachable, usually larger and straighter, and staying in the upper limb makes it simpler to keep the site clean and the line stable during movement.

Avoid puncturing through a joint because bending or extending the joint can irritate or dislodge the catheter, increase the risk of infiltration or phlebitis, and make the line harder to keep in place. That’s why the hand or forearm is favored over a site that would require going near a joint.

Lower-extremity sites are generally avoided when possible because they carry higher risks of infection and thrombosis and can be harder to keep clean and secure. As for using the dominant arm, it’s not typically chosen specifically for functional reasons; if feasible, many clinicians opt for the non-dominant arm to reduce interference with daily activities and a chance of dislodgement.

So, the best choice is an IV placed in the upper extremity, preferably in the hand or wrist, avoiding joints.