What is the recommended action for a nurse prior to collecting a blood specimen from a newborn via heel stick?

Warming the newborn's heel for 10 minutes is vital prior to collecting a blood specimen via heel stick. This practice helps to increase blood flow to the area, which can make the blood collection process easier and more efficient. Increased circulation ensures that a sufficient volume of blood can be obtained with less effort and discomfort for the newborn. Warming the heel can also help in minimizing the hematoma formation and in promoting vasodilatation, which is beneficial during the procedure.

It's important to note that while cleaning the heel with alcohol is a step that may be included in the blood collection process, alcohol can sometimes cause discomfort to newborns, and it must be allowed to dry completely before puncturing the skin to avoid hemolysis. Positioning the newborn upright is generally not necessary or recommended for a heel stick, as the procedure is typically performed with the infant in a flat or semi-reclined position to ensure safety and comfort. Applying a tourniquet is not appropriate for heel sticks in newborns; tourniquets are typically used for venipuncture in older children or adults, as they can obstruct circulation in smaller limbs and lead to complications.