How to Use PubMed for a Nursing Literature Review

To use PubMed for a nursing literature review, break your PICOT question into concepts, search each concept with both MeSH terms and keywords, combine them with Boolean operators, then apply filters and record every step.

Typing your topic into the search box usually gives thousands of loosely related results or a few that miss key studies. This guide shows the PubMed tools that fix that, from MeSH to exporting your final set.

Why PubMed Matters for Nursing Reviews

PubMed is a free database from the US National Library of Medicine. Its core is MEDLINE, a large index of biomedical and health journals, including many nursing titles.

Its strength is MeSH, the Medical Subject Headings vocabulary. Indexers tag articles with standard terms, so a MeSH search finds studies however the authors worded their title.

Most programs expect at least two databases. PubMed with CINAHL is the most common pairing.

Step 1: Turn Your PICOT Question into Concepts

Not every PICOT element needs searching. The comparison is often "usual care" and the time frame rarely appears in abstracts, so search the population, intervention and outcome.

Step 2: Find MeSH Terms

Open the MeSH database from the PubMed home page and search each concept. Each entry shows the preferred term, a definition, entry terms (synonyms) and its place in the MeSH tree.

• Falls: "Accidental Falls".
• Older adults: "Aged", which covers people aged 65 and over, with "Aged, 80 and over" beneath it.
• Hospital patients: "Inpatients" or "Hospitalization".

New or informal ideas, such as "hourly rounding", may have no exact MeSH term. Search those as keywords instead.

A useful shortcut is to find one highly relevant article, open its record and look at the MeSH terms listed beneath the abstract. They show exactly how indexers describe your topic.

Explosion and Major Topics

By default, a MeSH search includes narrower terms below it in the tree. Add [mh:noexp] to search only the term itself, or [majr] to find articles where the term is a major topic.

Step 3: Add Keywords and Synonyms

Recent articles may not be indexed with MeSH yet, so always combine subject headings with keywords. Search keywords in titles and abstracts with the [tiab] tag.

Use truncation carefully. "Nurs*" finds nurse, nursing and nursery, which may add noise.

Step 4: Combine Terms in the Advanced Search Builder

Build one search line per concept, joining its MeSH term and keywords with OR. Then join the concept lines with AND from the search history.

#1  "Accidental Falls"[mh] OR fall[tiab] OR falls[tiab]
#2  "Aged"[mh] OR "older adult*"[tiab] OR elderly[tiab]
#3  "Inpatients"[mh] OR inpatient*[tiab] OR hospitali*[tiab]
#4  rounding[tiab] OR "intentional rounding"[tiab] OR "purposeful rounding"[tiab]
#5  #1 AND #2 AND #3 AND #4

Use the "Details" view in the search history to check how PubMed interpreted each line. PubMed maps plain words to MeSH automatically, which sometimes adds terms you did not expect.

Step 5: Apply Filters

Filters narrow the results to studies that fit your inclusion criteria. Apply them after the main search so you can record how many results each one removed.

• Publication date: often the last five to ten years, as your program specifies.
• Language: usually English, unless you can read other languages.
• Article type: randomized controlled trials, systematic reviews or meta-analyses.
• Age: for example "Aged: 65+ years".
• Free full text: useful for quick access, but avoid it as an inclusion filter, as it removes relevant studies.

Clinical Queries, a PubMed tool, applies tested search filters for therapy, diagnosis, etiology and prognosis questions. It is a quick way to find clinically focused studies on your topic.

Step 6: Screen, Save and Export

1. Scan titles and remove clearly irrelevant studies.
2. Read abstracts against your inclusion criteria.
3. Get full texts for the remaining studies through your library.
4. Use "Similar articles" and "Cited by" on your best studies to find more.
5. Send results to a reference manager or download them as a citation file.
6. Create a free My NCBI account to save searches and set email alerts for new studies.

Running the Same Search in CINAHL

Once your PubMed search works, translate it for CINAHL rather than starting again. The concepts and keywords stay the same; the subject headings and field codes change.

CINAHL headings often differ slightly from MeSH. Check each one rather than assuming the same wording, and expect some overlap in results between the two databases.

Remove duplicates in your reference manager before screening, and record how many you removed. Markers notice when the numbers in a search table do not add up.

Documenting Your Searches

Markers often ask how you searched, so record everything as you go. A search table makes your method repeatable.

The figures are illustrative. For bigger projects, record the numbers removed at each screening stage for a PRISMA-style flow diagram.

Copy the exact search lines into your table rather than describing them. "Searched for falls and rounding" cannot be repeated; the full string with field tags can. Add one row for each database and each date you search, including any update searches before you submit.

Many programs also ask for the search to appear in an appendix. A tidy table written as you go turns that appendix into a five-minute job.

Common PubMed Mistakes

How EssayOasis Helps with PubMed Searches and Reviews

Send your PICOT question, program guidelines and citation style. A writer with a nursing background can build a documented PubMed and CINAHL search, an evidence table and a custom literature review organized by theme.

Use the strategy to repeat or extend the search yourself. Free revisions within the scope of your original request are included.