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Related Experiment Videos

The stability of a ketamine-morphine solution.

Roger Schmid1, Gideon Koren, Julia Klein

  • 1Department of Anesthesia and Pain Management, Toronto General Hospital, ON, Canada.

Anesthesia and Analgesia
|March 28, 2002
PubMed
Summary

This study shows that a combination of ketamine and morphine is stable for at least four days at room temperature. This finding supports the use of ketamine and morphine mixtures for managing postoperative pain.

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Area of Science:

  • Anesthesiology
  • Pain Management
  • Pharmacology

Background:

  • N-methyl D-aspartate (NMDA) receptor antagonists, like ketamine, are increasingly implicated in managing postoperative hyperalgesia and opioid tolerance.
  • Ketamine is increasingly used in clinical settings to reduce acute postoperative pain and opioid consumption.

Purpose of the Study:

  • To investigate the stability of a morphine sulfate and racemic ketamine mixture in saline.
  • To determine the stability of this mixture over a 4-day period at room temperature and a pH range of 5.5-7.5.

Main Methods:

  • A morphine sulfate and racemic ketamine solution was prepared in saline.
  • The solution's stability was assessed at room temperature across a pH range of 5.5-7.5 over 4 days.

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Main Results:

  • The ketamine-morphine mixture demonstrated stability at clinically relevant concentrations.
  • Stability was maintained at room temperature across a wide pH range for at least 4 days.

Conclusions:

  • A morphine and ketamine mixture is stable under typical storage conditions for at least 4 days.
  • This stability supports the potential clinical utility of combined ketamine-morphine solutions for postoperative analgesia.