Available Until 8/31/2024

Medical Subject Heading (MeSH) Changes and PubMed Searching – On Demand

For more information or to schedule this course, please contact Catherine Staley at NLMTrainers@nih.gov . 

Every year, the Medical Subject Headings (MeSH) are updated. How does this affect your PubMed searches? What happens when a term gets changed, added, removed or moved to a different part of the MeSH hierarchy? How do you accommodate vocabulary changes over time in your comprehensive searches? How do you check your saved searches and alerts? 

This on-demand course, offered through the NNLM Moodle platform, provides answers and allows participants to engage with exercises to practice what you learn. 

Resource URL: https://www.nnlm.gov/training/class-catalog/mesh-changes-and-pubmed-searching-demand

Learning Objectives

Successful participants will be able to:

  1. Describe how the MeSH vocabulary is maintained
  2. Explain how the addition, revision, and rearrangement of MeSH terms affect your PubMed searches
  3. Check your saved searches and alerts for needed changes


This Moodle course is divided into the following sections: 

  • What Happens when MeSH is Updated? 
  • Two Dates in MeSH 
  • New Term with the Same Meaning 
  • New Term that is More Specific 
  • Hierarchy Changes 

MLA CE Credits: 1.5