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Updated: Jun 22, 2026

A Preterm Rat Model for Pain Studies
Published on: February 9, 2024
The impact of pain in the immature brain
1B' Neonatal Intensive Care Unit, Aghia Sophia Children's Hospital, Athens, Greece. ebouzaat@otenet.gr
Insights
Preterm neonates are vulnerable to pain, which can cause neurological injury and affect development. Early recognition and interventions, including non-pharmacological and pharmacological methods, are crucial for managing neonatal pain.
Area of Science:
- Neonatal care
- Pediatric pain research
- Developmental neuroscience
Background:
- Preterm neonates in intensive care face frequent, invasive procedures and chronic stress.
- Painful experiences in neonates can lead to early neurological injury.
- Repeated pain exposure may negatively impact psychomotor development and long-term neurodevelopmental, behavioral, and social-emotional outcomes.
Purpose of the Study:
- To review the vulnerability of preterm neonates to pain.
- To discuss the consequences of neonatal pain on development.
- To outline current pain assessment measures and therapeutic interventions for preterm infants.
Main Methods:
- Review of clinical and laboratory investigations on neonatal pain.
- Analysis of existing pain assessment tools (behavioral and physiological indicators).
- Examination of therapeutic interventions for neonatal pain management.
Main Results:
- Preterm neonates exhibit heightened vulnerability and responses to painful stimuli.
- Both acute and chronic pain exposure can result in significant adverse outcomes.
- Various measures exist for assessing pain, and interventions can provide comfort and analgesia.
Conclusions:
- Neonatal pain requires careful management due to its potential for long-term adverse effects.
- Guidelines emphasize recognizing pain sources, routine assessment, avoiding stimuli, and employing interventions.
- Effective pain management strategies are essential for improving preterm infant outcomes.
Abstract:
Clinical and laboratory investigations of neonatal pain suggest that preterm neonates are more vulnerable to stress and painful procedures and have heightened responses to successive stimuli. Preterm infants receiving intensive care are subjected to frequent invasive and stressful procedures as well as more chronic environmental influences. Acute episodic pain may cause early neurologic injury. Repeated and prolonged exposure to pain may alter subsequent psychokinetic development, as well as affect long-term neurodevelopmental, behavioral and social-emotional outcome. Several pain measures exist to assess pain in full-term and preterm neonates, including behavioral indicators and physiological indicators of pain. Therapeutic interventions can provide comfort and analgesia in preterm neonates. Guidelines for preventing or treating neonatal pain and its adverse consequences include recognition of the sources of pain and routine assessments of neonatal pain, avoidance of recurrent painful stimuli and the use of specific non-pharmacological and pharmacological interventions.
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