Tangent Method

**Semantic type:** Intellectual Product

**Definition:** A method to determine the end of the T wave. A tangent is drawn to the steepest descending slope of the T wave between its summit and the notch; the end of the T-wave is defined as the point of intersection of this tangent with the base line. (Lepeschkin E, Surawicz B. The measurement of the Q-T interval of the electrocardiogram. Circulation 1952; 6: 378-88).

**Synonyms:** - Slope Method - TANGENT METHOD