Final answer:
The student's question pertains to recognizing a pattern in the QRS complex of an ECG, indicating delayed right ventricular depolarization, commonly found by examining leads V1 or V2.
Step-by-step explanation:
The question concerns the identification and interpretation of the QRS complex on an electrocardiogram (ECG), specifically relating to the pattern known as "rabbit ears" which usually indicates that the R ventricle is depolarizing slightly later than the L ventricle. This can be seen on an ECG, particularly in leads V1 or V2, where the R' wave signifies a delayed ventricular depolarization. In an ECG trace, the QRS complex is crucial as it represents the depolarization of the ventricles, essential for their contraction, and also encapsulates the repolarization of the atria which is masked by the dominant ventricular activity.