In the context of ventricular tachycardia, which lead would show a predominantly negative QRS complex under normal conditions?

In the context of ventricular tachycardia, the lead that would typically show a predominantly negative QRS complex under normal conditions is V1. This is due to the anatomy of the heart and the typical electrical depolarization patterns of the ventricles.

In a healthy heart, the electrical impulse propagates from the atria through the ventricles, producing a positive QRS complex in leads that correspond with the direction of depolarization. However, during ventricular tachycardia, the normal depolarization is disrupted, and the impulse generally travels in a manner that can lead to a predominantly negative QRS complex in certain leads.

Lead V1 is positioned in a way that it captures the electrical activity occurring in a primarily right-sided orientation during ventricular tachycardia. The electrical activity moves away from the V1 lead, resulting in a predominance of negative deflection. This is further supported by the fact that V1 is often associated with early activation of the right ventricle, leading to negative QRS complexes during abnormal rhythms.

The other leads mentioned in the options would not consistently exhibit this predominantly negative resultant during ventricular tachycardia under normal conditions, as they are either positioned in areas where the electrical impulses are moving toward the lead