On Doctoring MEDLINE searches, with reference librarian comments, March 2000

The question was

What are the indications for performing aortic valve replacement for aortic valve insufficiency?

1     exp *Heart valve prosthesis/    results=4131   
2     exp *Aortic valve insufficiency/di,su [Diagnosis, Surgery]    results= 633   
3     1 and 2    results=231   
4     limit 3 to (human and english language)    results= 128   

Reference Librarian comments

This strategy is fine; quite appropriate. You "exploded" the subject headings, and used subheadings appropriately. You combined the two sets, and did the "limit" trick.

Great job.