Paramedic Science
Exam Answer Key
Course Introduction
Paramedic Science is a comprehensive course designed to equip students with the knowledge, skills, and clinical expertise necessary to provide high-quality emergency medical care in pre-hospital settings. The curriculum covers a broad range of topics, including human anatomy and physiology, trauma management, advanced life support, pharmacology, and patient assessment. Through a combination of theoretical instruction, practical simulations, and clinical placements, students learn to respond effectively to medical emergencies, deliver patient-centered care, and work collaboratively with healthcare teams. The program prepares graduates for professional registration and a rewarding career as paramedics, capable of making critical decisions in dynamic and challenging environments.
Recommended Textbook
ECGs Made Easy 5th Edition by Barbara J Aehlert
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10 Chapters
515 Verified Questions
515 Flashcards
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Chapter 1: Anatomy and Physiology
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66 Verified Questions
66 Flashcards
Source URL: https://quizplus.com/quiz/6999
Sample Questions
Q1) When the left ventricle contracts,freshly oxygenated blood flows through the _____ valve into the _____.
A) aortic; aorta
B) mitral; right atrium
C) tricuspid; right ventricle
D) pulmonic; pulmonary arteries
Answer: A
Q2) Name the two main branches of the left coronary artery.
Answer: The left main coronary artery supplies oxygenated blood to its two primary branches: the left anterior descending (LAD; also called the anterior interventricular)artery and the circumflex artery (CX).
Q3) Explain the Frank-Starling law of the heart.
Answer: According to the Frank-Starling law of the heart,to a point,the greater the volume of blood in the heart during diastole,the more forceful the cardiac contraction,and the more blood the ventricle will pump (stroke volume).This is important so that the heart can adjust its pumping capacity in response to changes in venous return,such as during exercise.If,however,the ventricle is stretched beyond its physiologic limit,cardiac output may fall because of volume overload and overstretching of the muscle fibers.
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Page 3
Chapter 2: Basic Electrophysiology
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66 Verified Questions
66 Flashcards
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Sample Questions
Q1) On the ECG,the P wave represents atrial _____ and the QRS complex represents ventricular _____.
A) depolarization; depolarization
B) repolarization; repolarization
C) repolarization; depolarization
D) depolarization; repolarization
Answer: A
Q2) The normal pacemaker of the heart is the _____ node,which is found in the _____ atrium,and has an intrinsic firing rate of _____ beats/min.
A) sinoatrial; left; 40 to 60
B) sinoatrial; right; 60 to 100
C) atrioventricular; left; 20 to 40
D) atrioventricular; right; 100 to 180
Answer: B
Q3) In most ECG leads,a normal Q wave is less than 0.04 seconds in duration and less than one third the amplitude of the R wave in that lead.
A)True
B)False
Answer: True
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Page 4
Chapter 3: Sinus Mechanisms
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Sample Questions
Q1) Which of the following are possible causes of sinus tachycardia?
A) Hypothermia,hypovolemia
B) Hypoxia,calcium channel blocker overdose
C) Fever,pain,anxiety
D) Vomiting,vagal maneuvers
Answer: C
Q2) Which of the following correctly reflects the ECG criteria for a sinus rhythm?
A) More P waves than QRS complexes
B) P waves that look alike and upright in lead II,one before each QRS complex
C) Irregular atrial and ventricular rhythm
D) PR interval exceeding 0.20 seconds
Answer: B
Q3) The rate of a sinus rhythm is ____ beats/min.
A) slower than 60
B) 60 to 100
C) 80 to 120
D) faster than 100
Answer: B
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5
Chapter 4: Atrial Rhythms
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Sample Questions
Q1) In atrial fibrillation,the AV node attempts to protect the ventricles from the hundreds of impulses bombarding it per minute by blocking many of the impulses generated by the irritable sites in the atria.
A)True
B)False
Q2) Complete the following ECG criteria for Wolff-Parkinson-White (WPW)syndrome: Rlythm_______________________________________________
Q3) Delivery of an electrical current timed for delivery during the QRS complex is called defibrillation.
A)True
B)False
Q4) The ventricular rhythm in atrial fibrillation is usually "irregularly irregular."
A)True
B)False
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Chapter 5: Junctional Rhythms
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Sample Questions
Q1) Indicate the ventricular rates for each of the following junctional dysrhythmias:
A Junctional bradycardia ________________________________
B. Junctional tachycardia_________________________________
C. Accelerated junctional__________________________________ rhythm
D. Junctional rhythm____________________________________
Q2) The pacemaker cells in the AV junction are located near the nonbranching portion of the bundle of His.
A)True
B)False
Q3) If seen,the P wave of a rhythm originating in the AV junction will appear _____ in lead II.
A) upright
B) inverted
C) tall and peaked
D) wide and notched
Q4) If the AV junction paces the heart,the electrical impulse must travel in a backward direction to activate the atria.This is called _____ conduction.
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Chapter 6: Ventricular Rhythms
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Sample Questions
Q1) Medications to suppress an idioventricular rhythm should generally be avoided.
A)True
B)False
Q2) Complete the following ECG criteria for an idioventricular rhythm: Rlythm_________________________________
Q3) Complete the following ECG criteria for an accelerated idioventricular rhythm: Rlythm______________________________________
Q4) Transcutaneous pacing is the treatment of choice for pulseless ventricular tachycardia or ventricular fibrillation.
A)True
B)False
Q5) List three potential sites of origin of ectopic beats.
Page 8
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Chapter 7: Heart Blocks
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Sample Questions
Q1) Complete the following ECG criteria for second-degree AV block type I: Rhythm__________________________ Rate___________________________________
P waves__________________________
PR interval_________________________________ QRS duration______________________________
Q2) Complete the following ECG criteria for first-degree AV block: Rhythm__________________________ Rate___________________________________
P waves__________________________
PR interval_________________________________
QRS duration______________________________
Q3) In second-degree and third-degree AV blocks,_____.
A) P waves occur regularly
B) every other P wave is dropped
C) P waves are periodically dropped
D) there are more QRS complexes than P waves
Q4) The QRS complex associated with a third-degree AV block is always wide.
A)True
B)False
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Chapter 8: Pacemaker Rhythms
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Sample Questions
Q1) Your patient has a VVI pacemaker.Briefly explain the meaning of each of these letters.
Q2) In pacing,threshold 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) a pacing lead with a single electrical pole at the distal tip of the pacing lead through which the stimulating pulse is delivered
D) the ability of a pacemaker to increase the pacing rate in response to physical activity or metabolic demand
Q3) Describe what is meant by the term overdrive pacing.
Q4) Your patient has a DDD pacemaker.Briefly explain the meaning of each of these letters.
Q5) A demand pacemaker is also known as a _____ pacemaker.
Q6) Explain the benefits of a dual-chamber pacemaker.
Q7) Explain the difference between electrical capture and mechanical capture.
Q8) A(n)_____ _____ is a vertical line on the ECG that indicates the artificial pacemaker has discharged.
Page 10
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Chapter 9: Introduction to the 12-Lead ECG
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Sample Questions
Q1) When you read a 12-lead ECG from left to right,the ECG tracing is continuous.
A)True
B)False
Q2) 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
Q3) Lead II views the _____ wall of the left ventricle.
A) anterior
B) inferior
C) septal
D) lateral
Q4) Lead V<sub>5</sub>views the _____ wall of the left ventricle.
A) lateral
B) anterior
C) posterior
D) inferior
Q5) What two factors determine the portion of the heart that each lead "sees"?
Page 11
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Chapter 10: Post-Test
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Sample Questions
Q1) The inferior surface of the left ventricle is supplied by the _____ coronary artery in most of the population.
A) left
B) right
Q2) Which of the following are chest leads?
A) Leads I and aVL
B) Leads I,II,and III
C) Leads
V<sub>1</sub>,V<sub>2</sub>,V<sub>3</sub>,V<sub>4</sub>,V<sub>5</sub>,V<sub>6</ sub>
D) Leads I,II,III,aVR,aVL,and aVF
Q3) The term acute coronary syndromes refers to patients presenting with ischemic chest pain.
A)True
B)False
Q4) The term ectopic refers to an extra muscle bundle consisting of working myocardial tissue that forms a connection between the atria and ventricles outside the normal conduction system.
A)True
B)False
Page 12
Q5) List five signs or symptoms of decreased cardiac output.
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