The nurse gathers supplies to administer a unit of packed red blood cells to a client. Which type of tubing should be used for packed red blood cells?

Choice A reason: Primary tubing, specifically blood administration tubing with a filter, is used to transfuse packed red blood cells safely. This tubing ensures that any clots or debris are filtered, and it allows proper control of infusion rate according to transfusion protocols. Choice B reason: Micro-drip tubing is used for precise administration of small-volume IV fluids, usually less than 100 mL per hour, not for blood products. Using micro-drip tubing for blood could damage red blood cells or delay transfusion. Choice C reason: Secondary tubing is typically used for piggyback IV medications connected to a primary line. It is not designed for blood transfusions, as it lacks the necessary filter and diameter for safe administration of blood components. Choice D reason: Y-site tubing allows simultaneous infusion of compatible IV fluids but is not appropriate for blood transfusions due to risk of contamination and hemolysis. Blood products must be administered using dedicated, filtered primary tubing.