When administering IV medications, the LVN should always:

Rationale: A. Use the largest vein possible is incorrect because vein selection should prioritize patient safety and comfort, not simply size. A smaller, accessible, and stable vein may be preferable, and using a large vein unnecessarily may increase risk of mechanical complications or infiltration. B. Administer as rapidly as tolerated is incorrect because rapid administration of IV medications can cause adverse reactions, cardiovascular instability, or local irritation. IV medications should always be administered at the recommended rate specified in the provider’s order or medication guidelines. C. Confirm medication compatibility with IV fluids is correct. The LVN must always check for chemical compatibility between the IV medication and any fluids running through the line. Incompatible medications can precipitate, reduce efficacy, or cause dangerous reactions, which may lead to emboli, phlebitis, or other complications. This step ensures safe and effective IV therapy. D. Avoid flushing between medications is incorrect because flushing between medications is essential to prevent chemical incompatibilities and ensure that each medication reaches the bloodstream fully and safely. Skipping this step increases the risk of precipitation and adverse reactions.