In lead V1, the QRS is normally described as _____ with a short _____.

In lead V1, the QRS is normally described as _____ with a short _____.

• A. Positive, S wave
• B. Negative, R wave
• C. Flat, Q wave
• D. Wide, T wave

Answer: (B)

In lead V1, the QRS complex is typically characterized by a negative deflection, which means that the overall shape of the QRS is predominantly downward. This is an expected finding due to the orientation of lead V1, which is placed in the right chest, close to the right ventricle. The predominant negativity reflects the depolarization of the ventricles as they contract.

Additionally, the term "short R wave" accurately describes the initial upward deflection that occurs in the QRS complex. In lead V1, this R wave is generally smaller in magnitude and shorter than what is seen in other leads, such as those positioned closer to the left ventricle where the heart’s electrical activity generates larger positive deflections.

This combination of a negative QRS complex with a short R wave aligns with the typical findings in lead V1 and helps in the overall interpretation of cardiac rhythms and functions as observed on an EKG. Understanding this pattern is crucial for recognizing various cardiac conditions and diagnosing potential issues during EKG evaluations.