A nurse is preparing to insert an IV catheter for a client. Which of the following actions should the nurse plan to take?

A. Apply a tourniquet below the venipuncture site: The tourniquet should be applied above the intended insertion site to impede venous return and distend the vein. Placing it below the site would not promote vein filling and can hinder successful cannulation. B. Elevate the client's arm prior to insertion: Lowering the arm below heart level promotes venous filling by gravity, making veins easier to visualize and palpate. Elevating the arm can cause veins to collapse and make insertion more difficult. C. Choose a vein that is palpable and straight: A straight, resilient vein that can be palpated is less likely to roll and allows smoother catheter advancement. This reduces infiltration risk and increases the likelihood of a successful IV start. D. Select a site on the client's dominant arm: The non-dominant arm is preferred to promote comfort and reduce interference with daily activities. Using the dominant arm can limit mobility and increase the risk of dislodgement.