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Updated: Aug 7, 2026

A Preterm Rat Model for Pain Studies
Published on: February 9, 2024
Summary proceedings from the neonatal pain-control group
Kanwaljeet J S Anand1, Jacob V Aranda, Charles B Berde
1Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA. anandsunny@uams.edu
Insights
Newborns experience pain, but pain management is infrequent due to scientific gaps. Addressing neonatal pain control is crucial for better short-term and long-term outcomes in infants.
Area of Science:
- Neurobiology
- Neonatal Medicine
- Pain Management
Background:
- The fetus and newborn can experience acute, established, and chronic pain.
- Painful stimuli trigger complex biochemical, physiological, and behavioral responses in neonates.
- Effective pain control in newborns is linked to improved short-term and long-term outcomes.
Framework:
- The Neonatal Pain-Control Group addressed key concerns during the Newborn Drug Development Initiative (NDDI) Workshop I.
- Focus areas included pain from invasive procedures, sedation/analgesia during mechanical ventilation, and perioperative pain management.
- Cross-cutting themes involved clinical trial design, drug prioritization, ethical considerations, knowledge gaps, and future research needs.
Implementation:
- Discussions centered on practical challenges in implementing neonatal pain management strategies.
- The workshop aimed to bridge the gap between scientific understanding and clinical practice.
- Specific protocols for procedural, ventilatory, and surgical pain were deliberated.
Implications:
- Infrequent adoption of pain control measures stems from unresolved scientific issues and underappreciation of long-term sequelae.
- Addressing these issues is vital for optimal neurologic maturation in preterm and term newborns.
- This work highlights the need for continued research and improved clinical guidelines for neonatal pain.
Abstract:
Recent advances in neurobiology and clinical medicine have established that the fetus and newborn may experience acute, established, and chronic pain. They respond to such noxious stimuli by a series of complex biochemical, physiologic, and behavioral alterations. Studies have concluded that controlling pain experience is beneficial with respect to short-term and perhaps long-term outcomes. Yet, pain-control measures are adopted infrequently because of unresolved scientific issues and lack of appreciation for the need for control of pain and its long-term sequelae during the critical phases of neurologic maturation in the preterm and term newborn. The neonatal pain-control group, as part of the Newborn Drug Development Initiative (NDDI) Workshop I, addressed these concerns. The specific issues addressed were (1) management of pain associated with invasive procedures, (2) provision of sedation and analgesia during mechanical ventilation, and (3) mitigation of pain and stress responses during and after surgery in the newborn infant. The cross-cutting themes addressed within each category included (1) clinical-trial designs, (2) drug prioritization, (3) ethical constraints, (4) gaps in our knowledge, and (5) future research needs. This article provides a summary of the discussions and deliberations. Full-length articles on procedural pain, sedation and analgesia for ventilated infants, perioperative pain, and study designs for neonatal pain research were published in Clinical Therapeutics (June 2005).
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