Chapter 3 Review Questions for EKG Plain and Simple 4th ed.

Match the leads with the limbs they comprise

1. Lead I​ (a)  

2. Lead II​ (b)  

3. Lead III​ (c)  

• Left arm to left leg
• Right arm to left leg
• Right arm to left arm

What is the name of the sensors which are used in the recording of the heart's electrical impulses during the EKG?

• leads

• electrodes

• conductive gel

• wires

What effect does augmentation have on an EKG?

• increases the voltage

• decreases the voltage

• stops the voltage

• has no effect on the EKG

Which of the following is correct with respect to Einthoven's Law?

• Lead I + Lead II + Lead III = 0

• Lead II + Lead III = Lead I

• Lead I + Lead II = Lead III

• Lead I + Lead III = Lead II

Which of the following are unipolar augmented leads? Select All That Apply.

• aVR

• aVB

• aVL

• aVF

Which of the following leads are parts of the hexiaxial diagram? Select all that apply.

• Lead I

• Lead IV

• aVL

• aVR

Which of the following are precordial leads? Select all that apply.

• V2

• V4

• V6

• V8

Which of the following is true regarding the placement of the V5 lead?

• Placed at the left sternal border

• Placed at the midaxillary line

• Placed at the anterior axillary line

• Placed at the midclavicular line

Which of the following are the most commonly used leads that are used for continuous monitoring in the hospital?

• Leads II and V1

• Leads I and V3

• Leads V4 and V5

• Leads III and V6

Which of the following are electrocardiographic truths? Select all that apply.

• An impulse traveling away at a left angle to the positive electrode writes an isoelectric complex.

• An electrical impulse traveling toward a positive electrode writes a positive QRS complex on the EKG.

• If there is no impulse at all, there will be no complex.

• An impulse traveling away from a positive electrode writes a negative QRS complex.