ST Segment Depression Single Beat

**Semantic type:** Quantitative Concept

**Definition:** An electrocardiographic measurement of the mean amplitude (usually measured in mV) of the ST segment depression below the isoelectric baseline measured from the baseline to the ST segment of a single beat utilizing one or more leads. Based on the recording gain, this measurement may also be reported in mm. (CDISC)

**Synonyms:** - ST Segment Depression, Single Beat - ST Segment Depression, Single Beat - STDSB