EXPLODE, FOCUS, SUBHEADINGS, AND LIMIT REVIEW

FOCUS

Focusing is another decision you will make about each subject heading (MeSH) during the search process. Remember that the FOCUS and EXPLODE commands are separate decisions.

Focusing your term will retrieve only those articles where the term is emphasized, a major point, or a main topic.

Focus your MeSH term if you expect to find a lot of literature, and want only those articles that focus/emphasize the term.

Do NOT Focus if the concept is new, rare, or if there is not a lot of literature on the topic.

Never Focus region names, geographic names, or country names.

You do not need to explode and focus every term in the tree, only the main term (heart diseases).

Select Subject Heading  Hits   Explode   Focus      Heart Diseases 6195       Arrhythmia 4861         Carcinoid Heart Disease 49         Cardiac Output, High 25         Cardiac Output, Low 1302         Cardiac Tamponade 738       Cardiomegaly 1811       Endocarditis 582         Heart Aneurysm 594       Heart Arrest 2851       Heart Defects, Congenital 4662       Heart Failure, Congestive 10821         Heart Neoplasms 1793       Heart Rupture 152       Heart Valve Diseases 2193       Myocardial Diseases 2600       Myocardial Ischemia 9168         Pericardial Effusion 988       Pericarditis 561         Pneumopericardium 89         Postpericardiotomy Syndrome 25         Pulmonary Heart Disease 213         Rheumatic Heart Disease 600       Ventricular Dysfunction 306         Ventricular Outflow Obstruction 492

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