Recently, the ECRI Guidelines Trust was developed to fill the gap left by the disappearance of the National Guideline Clearinghouse.
The ECRI Guidelines Trust is a free source openly available on the Web, but free registration is required to access guidelines.
Trust Scorecards are available for many guidelines and rate quality based on factors such as strength of evidence, updates, external review and more.
PubMed
Do a search on your topic. Click on "Customize" under "Article Type" to the left. Select "Practice Guideline" from the list to add to the list. Click "Practice Guideline" on the list under "Article Type."
CINAHL
Add keywords for your topic. Or, if you know the title of the guideline, type it in the box with quotation marks around it. Then, under "Limit Your Search", select "Practice Guidelines" in the "Publication Type" list on the right.