Update on pain assessment in sick neonates and infants

Area of Science:

• Neonatal critical care
• Pain medicine
• Pediatric research

Background:

• Pain assessment in critically ill neonates and infants has seen recent developments over the past 5-6 years.
• Existing pain assessment instruments often exhibit item redundancy and lack robust psychometric validation.
• Clinical practice faces challenges in assessing prolonged or persisting pain, beyond acute pain, which is the primary research focus.

Purpose of the Study:

• To review recent advancements in pain assessment tools for critically ill neonates and infants.
• To identify limitations in current pain assessment methodologies, including psychometric properties and scope.
• To discuss the ongoing challenges in effectively assessing pain, particularly prolonged pain, in this vulnerable population.

Main Methods:

• Literature review of pain assessment developments in critically ill neonates and infants from the last 5-6 years.
• Analysis of the psychometric properties and item redundancy of existing pain assessment instruments.
• Discussion of the challenges in assessing acute versus prolonged/persisting pain in clinical settings.

Main Results:

• Pain assessment instruments demonstrate significant redundancy and a deficit in psychometric grounding.
• Current research predominantly addresses acute pain, while prolonged/persisting pain assessment remains a clinical challenge.
• The efficacy of pain assessment as a primary endpoint in analgesia trials is under debate.

Conclusions:

• There is a critical need for refined and validated pain assessment tools for critically ill neonates and infants.
• Future research should focus on developing instruments with stronger psychometric properties and addressing prolonged pain.
• Integrating behavioral observation with neurobiology-based parameters is essential for advancing pain assessment accuracy.