Morphine induces less nausea than meperidine when administered parenterally

Area of Science:

• Emergency Medicine
• Clinical Pharmacology
• Pain Management

Background:

• Parenteral opioids are commonly administered in Emergency Departments (EDs) for acute pain management.
• Nausea and vomiting are frequent adverse effects of opioid analgesia, impacting patient comfort and satisfaction.
• Understanding the comparative side effect profiles of different opioids is crucial for optimizing pain management strategies.

Purpose of the Study:

• To determine and compare the prevalence of nausea following parenteral administration of morphine versus meperidine in an ED setting.
• To evaluate the incidence of nausea and vomiting associated with these two commonly used opioid analgesics.

Main Methods:

• A prospective, convenience sample study was conducted in a community-based Emergency Department (ED).
• Eligible patients received either morphine or meperidine for acute or chronic pain exacerbation.
• Data on demographics and nausea occurrence were collected; nausea rates were compared between the morphine and meperidine groups.

Main Results:

• A total of 193 patients were included: 37 received morphine and 156 received meperidine.
• Nausea was reported in 0 out of 37 patients (0%) in the morphine group.
• Nausea was reported in 20 out of 156 patients (12.8%) in the meperidine group, a statistically significant difference.

Conclusions:

• Morphine was associated with significantly less nausea compared to meperidine when administered parenterally for analgesia in the ED.
• These findings suggest that morphine may be a preferable option over meperidine when minimizing nausea is a priority in ED pain management.