Final answer:
For a pediatric blood draw using a butterfly infusion set, a 23-gauge needle with a 2mL tube is the most suitable choice to minimize discomfort and prevent excessive blood loss in a child.
Step-by-step explanation:
For blood collection with a butterfly infusion set in a child, the appropriate option would be c. a 23-gauge needle with a 2mL tube. This smaller gauge needle is thinner, causing less discomfort and reducing the risk of damaging smaller veins in a child. The smaller volume tube is also ideal for children to prevent excessive blood loss and accommodate the smaller blood volume in children.
In medical practice, it is crucial to consider the patient's body weight and potential for blood loss. The protocol mentions that there must be fluid replacement available if the risk of blood loss is at least 7 ml/kg of body weight in children. Furthermore, when administering fluids through an infusion, the height of the IV bag must be considered. The pressure of the fluid entering the vein must be higher than the blood pressure within the vein to ensure proper flow.