Related Experiment Video
Updated: May 3, 2026

Assessment of Morphine-induced Hyperalgesia and Analgesic Tolerance in Mice Using Thermal and Mechanical Nociceptive Modalities
Published on: July 29, 2014
Evaluating patterns of morphine use in a neonatal intensive care unit after NEOPAIN
R Fleishman1, C A Gleason1, M T Myaing2
1Department of Pediatrics, Drexel University College of Medicine, Philadelphia, PA, USA.
Objective:
To test the hypothesis that use of morphine for sedation of ventilated premature neonates has not changed despite evidence-based recommendations.
Study Design:
Retrospective chart review.
Results:
Of 410 ventilated patients, 129 received a morphine infusion. The annual percentage of ventilated patients started on an infusion did not vary significantly from 2005-2010 (range: 27%-37%, mean: 32%, χ2 test for trend p = 0.60). Patients given morphine infusion had a lower median estimated gestational age at birth (26 0/7 weeks versus 27 6/7 weeks), and a lower median birth weight (762 versus 1010 grams).
Conclusion:
Use of morphine as a sedative and/or pre-emptive analgesic agent for critically ill, ventilated, premature neonates has not decreased at the study site despite evidence-based recommendations against this treatment approach. This is an area of care that may benefit from quality improvement interventions.
Related Concept Videos
Opioid Analgesics: Synthetic and Semisynthetic Opioids
Opioid Analgesics: Morphine and Other Natural Cogeners
Analgesia and Pain Management
Opioid Receptors: Overview
Parenteral Anesthetics: Overview

