Rhythm InterpretationQuestion 6 of 100
A technician is explaining a tracing to a student and points to the rounded wave that follows each QRS complex. What does this wave represent?
a.Repolarization of the ventricles
b.Depolarization of the ventricles
c.Conduction delay at the AV node
d.Contraction of the atria
Explanation
The T wave follows the QRS and represents ventricular repolarization, the recovery phase in which the ventricular cells return to their resting electrical state. Ventricular depolarization is the QRS itself. The AV node delay is represented by the flat segment within the PR interval, and atrial contraction follows the P wave.
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