Aggregate QT Interval

**Semantic type:** Quantitative Concept

**Definition:** An aggregate QT value based on the measurement of QT intervals from multiple beats within a single ECG. The method of aggregation, which can vary, is typically a measure of central tendency such as the mean. (CDISC)

**Synonyms:** - QT Interval, Aggregate - QT Interval, Aggregate - QT Interval, Aggregate - QTAG - QTAG