You are asked to set up an IV infusion using a macrodrip system. You know that a macrodrip system may deliver how many drops per ml?

A. 20, 40, 60: While some older references may list these as macrodrip options, modern IV administration uses standardized drop factors. These values are inconsistent and could lead to miscalculations when setting infusion rates. Using nonstandard values increases the risk of delivering too much or too little fluid over time. B. 100, 150, 200: These drop factors are far too high for typical macrodrip sets and are not used in standard clinical practice. Values this high are more akin to specialized microdrip systems designed for very precise small-volume infusions, not for routine fluid replacement. C. 10, 15, 20 gtt/mL: These are the standard macrodrip set drop factors. Macrodrip sets are designed for rapid infusion of fluids, typically in large-volume resuscitation or hydration. The choice among 10, 15, or 20 gtt/mL depends on the manufacturer and the clinical context, but all are widely accepted and safe for calculating IV flow rates. D. 1, 5, 10: These drop factors are too low for practical macrodrip IV administration and would require excessive time to deliver routine fluid volumes. Using such low drops per milliliter could lead to underhydration or delayed therapy.