Electrocardiography Exam Bank
Course Introduction
This course provides an in-depth exploration of electrocardiography (ECG), focusing on the fundamental principles of cardiac electrophysiology and the clinical application of ECG interpretations. Students will learn about the electrical conduction system of the heart, the physiological basis of ECG waveforms, and the identification of normal and abnormal rhythms. The course covers practical aspects such as ECG lead placement, recognizing arrhythmias, detecting signs of myocardial infarction, and other pathological conditions. Through lectures, hands-on sessions, and case studies, students will develop the skills necessary to accurately record, analyze, and interpret electrocardiograms in a variety of healthcare settings.
Recommended Textbook
EKG Plain and Simple 4th Edition by Karen Ellis
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15 Chapters
875 Verified Questions
875 Flashcards
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Chapter 1: Cardiac Anatomy and Physiology
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66 Verified Questions
66 Flashcards
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Sample Questions
Q1) The apex of the heart is located at the
A)top of the heart,where the great vessels emerge.
B)right side of the heart.
C)bottom of the heart,at the leftmost tip.
D)back wall of the heart.
Answer: C
Q2) Which of the following is the correct sequence of blood flow through the peripheral circulation?
A)Arteries-veins-vena cava-capillaries
B)Arteries-arterioles-capillaries-venules-veins
C)Veins-venules-capillaries-arterioles-arteries
D)Capillaries-arterioles and venules-arteries and veins
Answer: B
Q3) Through which structure must blood travel in order to leave the right ventricle?
A)Right atrium
B)Tricuspid valve
C)Left ventricle
D)Pulmonic valve
Answer: D
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Page 3
Chapter 2: Electrophysiology
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68 Flashcards
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Sample Questions
Q1) The pacemaker is the ________ of the conduction system of the heart.
A)beginning
B)pump
C)highway
D)end
Answer: A
Q2) The job of the cardiac conduction system is to
A)propagate electrical impulses.
B)conduct electrical impulses.
C)cause depolarization of myocardial cells.
D)all of the above.
Answer: D
Q3) The ST segment is located between the
A)P wave and the QRS complex.
B)QRS complex and the T wave.
C)T wave and the next P wave.
D)P wave and the T wave.
Answer: B
Q4) Normal conduction begins with the pacemaker of the heart,the ________.
Answer: Sinus node
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Chapter 3: Lead Morphology and Placement
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56 Flashcards
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Sample Questions
Q1) The precordial leads are located on the A)arms.
B)legs.
C)back.
D)chest.
Answer: D
Q2) An impulse that travels away from a positive electrode will write a(n)________ on the EKG.
A)positive QRS complex
B)negative QRS complex
C)isoelectric QRS
D)flat line
Answer: B
Q3) In which of the following leads should the QRS complex be negative?
A)Lead I
B)Lead II
C)aVR
D)aVL
Answer: C
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Page 5
Chapter 4: Technical Aspects of the EKG
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54 Verified Questions
54 Flashcards
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Sample Questions
Q1) You're doing a 12-lead EKG on a patient who has tremors that make the EKG hard to read.You should
A)leave,telling the nurse to call you when the tremors stop,so you can return and try again.
B)make several attempts at a good tracing,then document on the EKG how many attempts were made.
C)call the physician and ask for medication to stop the tremors.
D)do the EKG as usual with no documentation about tremors.
Q2) Artifact is a sign that the patient is in distress.
A)True
B)False
Q3) The word "somatic" means ________.
Q4) Your patient is having chills.What kind of artifact can this produce?
A)60-cycle interference
B)Baseline sway
C)Broken recording
D)Somatic tremors
Q5) CPR artifact is seen only during CPR.
A)True
B)False
Page 6
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Chapter 5: Calculating Heart Rate
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27 Flashcards
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Sample Questions
Q1) If the QRS complexes are all 50 little blocks apart,the heart rate is ________.
Q2) If the QRS complexes are all 15 little blocks apart,the heart rate is ________.
Q3) The most accurate way to calculate heart rate on an irregular rhythm is the six-second strip method.
A)True
B)False
Q4) The rhythm in Figure 1 is A)regular.
B)irregular.
C)regular but interrupted by premature beats.
D)regular but interrupted by pauses.
Q5) Which of the following is a method of calculating heart rate?
A)Six-second strip method
B)The QT interval method
C)The P-P interval method
D)All of the above
Q6) Calculating heart rate involves counting the number of P waves on the strip. A)True
B)False
Q7) A regular rhythm is one in which ________.
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Chapter 6: How to Interpret a Rhythm Strip
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Sample Questions
Q1) An arrhythmia is a(n)________ heart rhythm.
Q2) A rhythm originating in the sinus node should NOT have which of the following?
A)Narrow QRS complexes of uniform shape
B)Regularly spaced QRS complexes
C)Absent QRS complexes
D)Heart rate of 60-100
Q3) The distance between consecutive P waves is called the ________.
Q4) An abnormal rhythm is called an arrhythmia.
A)True
B)False
Q5) If the patient's rhythm changes,you should FIRST
A)assess your patient for signs of decreased cardiac output.
B)calculate the heart rate,rhythm,and intervals.
C)change the lead to see if the rhythm is real or if it's artifact.
D)look for P waves.
Q6) The normal rhythm of the heart has P waves that are
A)upright,matching,and precede the QRS complex.
B)variable in shape and location.
C)often hidden inside QRS complexes.
D)multiple in number,preceding the QRS complex.
Page 8
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Chapter 7: Rhythms Originating in the Sinus Node
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60 Flashcards
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Sample Questions
Q1) The T wave in Figure 4 is A)inverted.
B)upright.
C)indicative of sinus control of the ventricles.
D)indicative of ventricular depolarization.
Q2) The sinus rhythm that has a heart rate greater than 100 is A)sinus rhythm.
B)sinus bradycardia.
C)sinus tachycardia.
D)sinus arrhythmia.
Q3) The PR interval in sinus rhythms should be ________ from beat to beat.
Q4) PR interval in Figure 4 is closest to
A)0.12 seconds.
B)0.28 seconds.
C)0.04 seconds.
D)0.40 seconds.
Q5) A pacemaker is usually needed to treat sinus bradycardia. A)True
B)False
Q6) In a sinus arrest,the sinus node________ firing for a time.
Page 9
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Chapter 8: Rhythms Originating in the Atria
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Sample Questions
Q1) The rhythm most often associated with chronic obstructive pulmonary disease is A)atrial fibrillation.
B)SVT.
C)sinus arrhythmia.
D)multifocal atrial tachycardia.
Q2) Atrial flutter is characterized by A)P waves of varying shapes and regularly spaced QRS complexes.
B)irregularly irregular pattern of QRS complexes.
C)regularly spaced V-shaped waves.
D)a run of six or more PACs in a row.
Q3) PACs are premature beats from the sinus node.
A)True
B)False
Q4) Both atrial fibrillation and multifocal atrial tachycardia have at least three different shapes of P waves.
A)True
B)False
Q5) Paroxysmal atrial tachycardia is an atrial tachycardia that ________ the underlying rhythm.
Q6) Name three causes of PACs.________.
Page 10
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Chapter 9: Rhythms Originating in the AV Junction
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Sample Questions
Q1) Low junctional rhythms originate low down in the ventricle.
A)True
B)False
Q2) The rhythm in Figure 9 is
A)sinus rhythm.
B)accelerated junctional rhythm.
C)atrial fibrillation.
D)junctional bradycardia.
Q3) In high junctional rhythms,the P wave is
A)upright,rounded,preceding the QRS.
B)inverted following the QRS.
C)inverted preceding the QRS.
D)hidden inside the QRS.
Q4) The AV node is located in the
A)left atrium.
B)right atrium.
C)right ventricle.
D)left ventricle.
Q5) Name three causes of junctional tachycardia.
Q6) Junctional rhythm has a heart rate of ________.
11
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Chapter 10: Rhythms Originating in the Ventricles
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Sample Questions
Q1) Defibrillation is the treatment of choice for ventricular fibrillation.
A)True
B)False
Q2) The QRS interval of the ventricular beat in Figure 10 is closest to
A)0.40 seconds.
B)0.80 seconds.
C)0.06 seconds.
D)0.20 seconds.
Q3) Multifocal PVCs are those that
A)have different shaped P waves preceding them.
B)have different shaped QRS complexes.
C)come from the same focus.
D)resemble each other.
Q4) Ventricular fibrillation has
A)no P waves or QRS complexes.
B)P waves but no QRS complexes.
C)QRS complexes but no T waves.
D)P waves and QRS complexes.
Q5) Torsades de pointes is a form of ventricular tachycardia that ________ around an axis.
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Chapter 11: AV Blocks
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Sample Questions
Q1) In third-degree AV block,if the block is at the AV node
A)the QRS will be wide and bizarre.
B)the P waves will be tall and pointy.
C)the QRS will be narrow.
D)there will be no P waves.
Q2) First-degree AV block is characterized by a prolonged QRS interval.
A)True
B)False
Q3) In which kind of AV block do NONE of the sinus impulses reach the ventricles?
A)First-degree AV block
B)Wenckebach
C)Mobitz II second-degree AV block
D)Third-degree AV block
Q4) Third-degree AV block usually needs no treatment.
A)True
B)False
Q5) The origin of the P waves in AV blocks is the ________.
Q6) First-degree AV block is best treated with a pacemaker.
A)True
B)False
Page 13
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Chapter 13: How to Interpret a 12-Lead EKG
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57 Flashcards
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Sample Questions
Q1) Tall,pointy T waves are typical of A)hyperkalemia.
B)hypercalcemia.
C)hypercholesterolemia.
D)hypokalemia.
Q2) A hallmark of hypercalcemia on the EKG is
A)sagging ST segments.
B)prolonged QT intervals.
C)shortened ST segments.
D)prolonged QRS intervals.
Q3) Right ventricular hypertrophy is most commonly caused by A)atrial fibrillation.
B)heart attack.
C)hypertension.
D)chronic lung disease.
Q4) Indeterminate axis is between
A)0 and +90 degrees.
B)0 and -90 degrees.
C)+90 and 180 degrees.
D)-90 and 180 degrees.
14
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Chapter 14: Myocardial Infarction
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Sample Questions
Q1) A ________ MI is seen as a mirror image of an anterior MI.
Q2) An inferior MI is most often caused by occlusion of which coronary artery?
A)Right coronary artery
B)Left main
C)Circumflex
D)Left anterior descending
Q3) Occlusion is
A)blockage.
B)an EKG finding seen in NSTEMIs.
C)an EKG finding consistent with ischemia.
D)the opening of a coronary artery.
Q4) Indicative changes of a STEMI include which of the following?
A)ST segment elevation.
B)ST segment depression.
C)T wave flattening.
D)Fish-hook in V .
Q5) An age-indeterminate MI should have a significant Q wave along with T wave inversion,but the ST segment should be back to baseline.
A)True
B)False
15
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Chapter 16: Medications and Electrical Therapy
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113 Flashcards
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Sample Questions
Q1) VVI pacemakers are inserted into which chamber of the heart?
A)Right atrium
B)Left atrium
C)Right ventricle
D)Left ventricle
Q2) Six to seven seconds of asystole sometimes follows administration of adenosine.
A)True
B)False
Q3) AEDs are intended for use only by professional healthcare providers.
A)True
B)False
Q4) What must be done to a monitor-defibrillator to change it from cardioversion mode to defibrillator mode? ________.
Q5) Which of the following findings would be LEAST likely in a client who is taking diuretics?
A)Ventricular irritability
B)Tachycardias
C)Ventricular arrhythmias
D)Bradycardia
Q6) A pacing catheter is the ________ inserted into the chamber.
Page 16
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Chapter 17: Diagnostic Electrocardiography
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Sample Questions
Q1) A MET is a
A)measurement of energy absorption during exercise.
B)measurement of oxygen consumption during exercise.
C)method of exercise.
D)pharmacologic agent used in stress testing.
Q2) The "gold standard" for determining the presence of coronary artery disease is the A)exercise stress test.
B)MUGA scan.
C)thallium stress test.
D)angiogram.
Q3) Attending to activities of daily living averages about 10 METS.
A)True
B)False
Q4) The inability of the heart to increase its rate adequately with exercise is called
A)inotropic reserve.
B)chronotropic reserve.
C)inotropic incompetence.
D)chronotropic incompetence.
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