Which statement about pain associated with venipuncture versus heel-stick sampling in neonates is most accurate?

• A. Venipuncture is less painful than heel-stick.
• B. Heel-stick is less painful than venipuncture.
• C. They are equally painful.
• D. There is no evidence comparing the two.

Answer: (A)

Pain from neonatal blood sampling is largely determined by how much tissue is disrupted and how many punctures are required. Heel-stick tends to cause more pain because it often involves multiple punctures into the heel to obtain enough blood and causes tissue trauma to a highly innervated area. This combination typically leads to longer distress and higher pain responses. Venipuncture, when performed efficiently, usually involves a single puncture into a vein with less overall tissue disruption, resulting in a shorter, lower-intensity painful stimulus. Therefore, in general, venipuncture is less painful than heel-stick. Using comfort measures such as sucrose, swaddling, and non-nutritive sucking can further reduce pain for both procedures, and minimizing attempts is key to keeping distress to a minimum.