Introduction to Electrocardiography Exam Bank
Course
Introduction
Introduction to Electrocardiography provides a foundational understanding of the principles and clinical applications of electrocardiogram (ECG) technology. This course explores the anatomy and physiology of the heart, the electrical conduction system, and the basics of how ECGs are recorded and interpreted. Students will learn to recognize normal and abnormal ECG patterns, identify common arrhythmias, and understand the clinical significance of various ECG findings. Practical components include hands-on training in lead placement, equipment operation, and troubleshooting common issues in ECG recordings, preparing students for further study or roles in healthcare settings that utilize electrocardiography.
Recommended Textbook ECGs Made Easy 6th Edition by Barbara J Aehlert
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10 Chapters
507 Verified Questions
507 Flashcards
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Page 2
Chapter 1: Anatomy and Physiology
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62 Verified Questions
62 Flashcards
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Sample Questions
Q1) Electrolyte very important in cardiac muscle contraction.
A)Acute coronary syndromes
B)Chronotropic
C)Tamponade
D)Chemoreceptors
E)Mediastinum
F)Myocardial ischemia
G)Venous return
H)Baroreceptors
I)Calcium
Answer: I
Q2) The apex of the heart is formed by the _____.
A) tip of the left ventricle
B) tip of the right atrium
C) right atrium and right ventricle
D) left atrium and left ventricle
Answer: A
Q3) The inferior outer surface of the heart is also called the _____ surface. Answer: diaphragmatic
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Chapter 2: Basic Electrophysiology
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65 Verified Questions
65 Flashcards
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Sample Questions
Q1) Leads II, III, and aVF view the _____ surface of the left ventricle.
A) anterior
B) inferior
C) septal
D) lateral
Answer: B
Q2) In most patients, the sinoatrial (SA) and atrioventricular (AV) nodes are supplied by the _____ coronary artery.
A) right
B) left main
C) circumflex
D) left anterior descending
Answer: A
Q3) The portion of the ECG tracing between the QRS complex and the T wave is called the ____.
A) PR segment
B) ST segment
C) TP segment
D) QT interval
Answer: B
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Chapter 3: Sinus Mechanisms
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45 Flashcards
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Sample Questions
Q1) In sinus arrhythmia, a gradual increasing of the heart rate is usually associated with
A) expiration
B) inspiration
C) excessive caffeine intake
D) early signs of heart failure
Answer: B
Q2) The rate of sinus tachycardia is _____ beats/min.
A) slower than 60
B) 40 to 80
C) 60 to 100
D) faster than 100
Answer: D
Q3) List three significant signs and/or symptoms that, if observed with a sinus bradycardia, would require management of this dysrhythmia.
Answer: Clinical signs and symptoms of hemodynamic compromise can include acute changes in mental status; chest pain or discomfort; cold, clammy skin; fall in urine output; heart failure; low blood pressure; pulmonary congestion; shock; and shortness of breath.
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Page 5
Chapter 4: Atrial Rhythms
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Sample Questions
Q1) Delivery of an electrical current timed for delivery during the QRS complex is called _____.
Q2) What is meant by the term controlled atrial fibrillation?
A) The overall ventricular rate is less than 100 beats/min.
B) The atrial rate is less than 100 beats/min.
C) The overall ventricular rate is greater than 100 beats/min.
D) The atrial rate is greater than 100 beats/min.
Q3) Atrial fibrillation is characterized by _____.
A) one P wave before each QRS and a regular ventricular rate of 60 to 100 beats/min
B) an erratic, wavy baseline and irregular ventricular rhythm
C) "saw-tooth"- or "picket-fence"-shaped waveforms preceding each QRS
D) P waves occurring before, during, or after the QRS complex; when seen, they are inverted
Q4) An accessory pathway that has one end attached to normal conductive tissue is called a(n) __________.
Q5) Delivery of an electrical current timed for delivery during the QRS complex is called defibrillation.
A)True
B)False
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Chapter 5: Junctional Rhythms
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Sample Questions
Q1) A beat originating from the AV junction that appears later than the next expected sinus beat is called a(n) _______________.
Q2) Depending on the severity of the patient's signs and symptoms, management of slow rhythms originating from the AV junction may require intervention including _____.
A) defibrillation
B) intravenous atropine
C) synchronized cardioversion
D) vagal maneuvers or adenosine, or both
Q3) The usual rate of nonparoxysmal junctional tachycardia is _____ beats/min.
A) 50 to 80
B) 80 to 120
C) 101 to 140
D) 150 to 300
Q4) The atrioventricular (AV) junction consists of the _____.
A) SA and AV nodes
B) AV node and the Purkinje fibers
C) AV node and nonbranching portion of the bundle of His
D) AV node, bundle of His, and the right and left bundle branches
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Page 7
Chapter 6: Ventricular Rhythms
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Sample Questions
Q1) The term premature ventricular complex is technically more correct than premature ventricular contraction.
A)True
B)False
Q2) What is the name given to polymorphic VT that occurs in the presence of a long QT interval?
Q3) Sustained monomorphic VT is often associated with underlying heart disease, particularly myocardial ischemia, and rarely occurs in patients without underlying structural heart disease.
A)True
B)False
Q4) List four common causes of premature ventricular complexes.
Q5) The rate of an idioventricular rhythm is _____ beats/min.
A) 20 to 40
B) 41 to 60
C) 61 to 100
D) 101 to 180
Q6) List three potential sites of origin of ectopic beats.
Q7) List four reasons when the ventricles may assume responsibility for pacing the heart.
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Chapter 7: Atrioventricular Blocks
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Sample Questions
Q1) In 2:1 AV block, the PR interval _____.
A) shortens
B) lengthens
C) is absent
D) remains constant
Q2) In second-degree AV block type I, the PR interval _____.
A) shortens
B) is absent
C) is inconstant
D) remains constant
Q3) The QRS complex associated with a third-degree AV block is always wide.
A)True
B)False
Q4) Second-degree AV block type II is characterized by _____ intervals.
A) irregular P to P
B) irregular R to R
C) regular P to P intervals and regular R to R
D) irregular P to P intervals and irregular R to R
Q5) A _____ bundle branch block produces a RSR pattern in lead V<sub>1</sub>.
Page 9
Q6) A _____ bundle branch block produces a QS pattern in lead V<sub>1</sub>.
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Chapter 8: Pacemaker Rhythms
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Sample Questions
Q1) Explain the difference between electrical capture and mechanical capture.
Q2) In pacing, rate modulation refers to _____.
A) the ability of a pacemaker to recognize and respond to intrinsic electrical activity
B) the minimum level of electrical current needed to consistently depolarize the myocardium
C) the ability of a pacemaker to increase the pacing rate in response to physical activity or metabolic demand
D) a pacing lead with a single electrical pole at the distal tip of the pacing lead through which the stimulating pulse is delivered.
Q3) Capture is _____.
A) the electrical stimulus delivered by a pacemaker's pulse generator
B) a vertical line on the ECG that indicates the pacemaker has discharged
C) the time measured between a sensed cardiac event and the next pacemaker output
D) the ability of a pacing stimulus to successfully depolarize the cardiac chamber that is being paced
Q4) Your patient has a VVI pacemaker. Briefly explain the meaning of each of these letters.
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Chapter 9: Introduction to the 12-Lead Electrocardiogram
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36 Flashcards
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Sample Questions
Q1) The inferior wall of the left ventricle is supplied by the _____ coronary artery in most of the population.
A) left
B) right
Q2) Lead V<sub>3</sub> views the _____ wall of the left ventricle.
A) lateral
B) anterior
C) posterior
D) inferior
Q3) An ECG machine's sensitivity must be calibrated so that a 1-millivolt electrical signal will produce a deflection measuring exactly _____ mm tall.
A) 0.5
B) 1
C) 5
D) 10
Q4) The coronary arteries originate at the base of the _____.
Q5) The chest leads are the only unipolar leads in the standard 12-lead ECG. A)True B)False
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Chapter 10: Posttest
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Sample Questions
Q1) The point where the QRS complex and ST segment meet is called the ST junction or the J point.
A)True
B)False
Q2) On an ECG, what is the first negative deflection seen after the P wave?
A) Q wave
B) R wave
C) S wave
D) T wave
Q3) Where is the positive electrode placed in lead III?
A) Right arm
B) Left arm
C) Left leg or foot
D) Right leg or foot
Q4) An accessory pathway that has one end attached to normal conductive tissue is called a(n) __________.
Q5) Cardiac output is the amount of blood pumped into the aorta each minute by the heart.
A)True
B)False
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