Build a Boolean Search for a Nursing Evidence Question
A Boolean search turns a question into groups of related terms. Use OR to collect alternatives for one concept and AND to connect different concepts. Parentheses make the intended grouping explicit. Check database-specific behaviour in the PubMed User Guide.
Build concept blocks first
For an invented assignment about understanding written discharge information, begin with a population or setting block and an information block. A simple exploratory query might be:
(discharge OR discharge instructions) AND (comprehension OR understanding)
This is a teaching example, not a tested comprehensive strategy. Inspect what the database actually retrieves and how it translates the terms. Phrase searching and field tags may alter behaviour.
Do not paste an entire assignment question into a long chain of AND terms and assume that more detail means a better search. Requiring every concept can exclude relevant papers that describe the same issue differently.
Diagnose one block at a time
If results are sparse, search each block separately. Check spelling, terminology, indexing, and unnecessary restrictions. If results are broad, inspect several irrelevant records to identify the source of the mismatch.
Use NOT cautiously: excluding a term can remove papers that mention it while still answering your question. A librarian can help refine a strategy when the assignment requires a formal search.
Preserve the route to the evidence
Record the exact query, database, date, filters, and reason for a change. Result counts describe that search run; they do not measure evidence quality.
In your care-plan rationale, cite the selected paper rather than the search query. Keep the search record separately so you can explain how you found it.
Apply the review
The source guide covers the next selection step. Use Nursevi to keep the eventual source attached to the relevant rationale after you have checked the full paper.