13.1.5 Abbreviations

Include only abbreviations used in the text being indexed (ie, if a text uses only an expanded form, eg, National Institutes of Health, but never the abbreviation, do not include “NIH” in the index).Abbreviations are listed alphabetically among other entries (examples from Thomas,).catheterizationCAT scan. See computed tomographycat-scratch diseaseCEA (carcinoembryonic antigen)cecum ectopic ACTH syndrome, 106, 107, 109ectopic kidney, 2226ectopic pregnancy, 1947, 2055 2056Identical abbreviations are sorted by case; be consistent throughout the index, eg, HeV, 232HEV, 330 331 PaO2, 464PAO2, 251Use cross-references and expansions with abbreviations, as in these examples (first set from Thomas).CAT scan. See computed tomographycomputed tomography (CT, CAT ...Less