ST Segment Elevation; ST Segment Depression . General Introduction to ST, T, and U wave abnormalities. Basic Concept: the specificity of ST-T and U wave abnormalities is provided more by the clinical circumstances in which the ECG changes are found than by the particular changes themselves. Thus the term, nonspecific ST-T wave abnormalities, is frequently used when the clinical data are not available to correlate with the ECG findings.
lutein â(usually uncountable, plural luteins) ( 1 organic chemistry) A yellow carotenoid pigment, widely distributed in both plants and animals. 2  E161b when used as a food colouring.  xanthophyll.
lutein. Definitions: 1. The yellow pigment in the corpus luteum, in the yolk of eggs, or any lipochrome. 2. The dried powdered corpora lutea of the hog, formerly used as a progesterone source. Synonyms: xanthophyll. The definition information for lutein is provided by Stedman's.You can search our medical dictionary here.efinitions: 1. The yellow pigment in the corpus luteum, in the yolk of eggs, or any lipochrome. 2. The dried powdered corpora lutea of the hog, formerly used as a progesterone source. Synonyms: xanthophyll. The definition information for lutein is provided by Stedman's. You can search our medical dictionary here.