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EGAN'S CHAPTER 18 ECG EXAM
QUESTIONS & ANSWERS
ALREADY PASSED
Question: A run of three or more PVCs should be called
- Supra ventricular tachycardia
- Atrial tachycardia
- Ventricular fibrillation
- Ventricular tachycardia
Correct answer: D. Ventricular tachycardia
Question: Your patient has a normal ECG reading while
at rest. What does this finding tell you about the patient's likelihood of having a myocardial infection in the immediate future?
- Less than 50% chance
- Little or no value
- Less than 10% chance
- Less than 30% chance
Correct answer: B. Little or no value
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Question: Which of the following is a potential
complication for a patient with atrial fibrillation?
- Asthma
- Renal failure
- Blood clot formation
D. COPD
Correct answer: C. Blood clot formation
Question: What term is used to define the ability of
certain cardiac cells to depolarize without stimulation?
- Polarization
- Automaticity
- Contraction
- Autopolarization
Correct answer: B. Automaticity
Question: What structure normally paces the healthy
heart?
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- Bundle of His
- Sinoatrial node
- Purkinje fibers
- Atrioventricular node
Correct answer: B. Sinoatrial node
Question: What structure serves as the backup pacemaker
for the heart?
- Atrioventricular node
- Purkinje fibers
- Bundle of His
- Sinoatrial node
Correct answer: A. Atrioventricular node
Question: Why is the electrical impulse temporarily
delayed at the atrioventricular node?
- To allow complete filling of the atria
- To allow better filling of the ventricles
- To allow more sodium buildup in the myocardial cells
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- To allow complete emptying of the ventricles
Correct answer: B. To allow better filling of the ventricles
Question: At what part of the cardiac conduction system
does the electrical impulse travel most rapidly?
- Purkinje fibers
- Bundle branches
- Intra-atrial pathways
- Bundle of His
Correct answer: A. Purkinje fibers
Question: What is the normal maximum length of the P
wave?
- 3 mm
- 7 mm
- 5 mm
- 1 mm