Chapter 11: The Normal Electrocardiogram

Chapter 11: The Normal Electrocardiogram

Complete Chapter Questions With Answers

Sample Questions Are Posted Below

3. According to Einthoven’s Law, if the QRS voltage in her lead III is 0.5 mV, what is the QRS voltage in Lead I?

1. 0.05 mV
2. 0.50 mV
3. 1.05 mV
4. 1.25 mV
5. 2.05 mV

ANS: B

4. The P-R interval is the time between the beginning of atrial depolarization and ventricular depolarization. The normal P-R interval is:

1. 0.04 seconds
2. 0.08 seconds
3. 0.16 seconds
4. 0.20 seconds
5. 0.35 seconds

ANS: C

5. When recording lead I on an EKG, the right arm is the negative electrode and the positive electrode is the:

1. Left arm
2. Left leg
3. Right leg
4. Left arm + left leg
5. Right arm + left leg

ANS: A