The ST Segment

Multiple Choice

The ST segment:

A) begins where downward slope of the R wave extends below the baseline and ends at the point where the S wave deflects back up to the baseline.
B) is the flat line that follows the QRS complex and connects it to the T wave.
C) represents the entire ventricular repolarization.
D) appears as a curved, sloping line although it may vary by 1.5 to 2.0 mm in some precordial leads.