Which statement is true regarding neonatal pain scales described here?

• A. NPASS is effective from 23 to 40 weeks.
• B. NIPS is effective for around 28 weeks.
• C. All of the above
• D. PIPP has limited use in extremely premature neonates.

Answer: (C)

Neonatal pain scales are designed for specific maturational stages, so their accuracy depends on the infant’s gestational age and developmental status.

NPASS (Neonatal Pain, Agitation and Sedation Scale) is validated across a broad range of maturation, from very early preterm around 23 weeks up to term equivalents near 40 weeks. This breadth allows clinicians to assess pain, agitation, and sedation reliably in both extremely preterm and more mature neonates, making it applicable across that wide span.

NIPS (Neonatal Infant Pain Scale) is most effective for identifying pain in infants who are at or beyond early preterm development, with reliability improving around 28 weeks gestational age and continuing into the term/postterm period. That makes it well-suited for infants who are not extremely preterm but have some maturational development.

PIPP (Premature Infant Pain Profile) incorporates gestational age and behavioral state, and while it is useful for many preterm infants, its sensitivity and usefulness diminish in the most extremely premature neonates where certain behavioral cues are less developed.

Because each statement reflects how these scales perform across different maturational stages, all of the above are true.