Which of the following leads allow the cardiac vector to be located within the normal 90-degree quadrant? Which two leads are best utilized to determine the direction of the cardiac vector?
I.I
II.II
III.aV_L
IV.aV_F

Question

Quizplus · Accepted Answer

Comparing QRSs from lead I and lead aV_F allows the cardiac vector to be located within a 90-degree quadrant (Figure 19-15). A positive QRS complex recorded by both leads meAnswer the cardiac vector is located in the left lower quadrant, or the normal range (-0 degrees to +90 degrees).

Which of the Following Leads Allow the Cardiac Vector to Be