Test Your Knowledge Of Cardiology

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| By Catherine Halcomb
Catherine Halcomb
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Quizzes Created: 1430 | Total Attempts: 6,115,171
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Cardiology Quizzes & Trivia

Cardiology is a branch of medicine dealing with disorders of the heart and parts of the circulatory system. Cardiologists help victims of heart disease return to a full and useful life and also counsel patients about the risks and prevention of heart disease. The quiz below is designed to help one review their knowledge of cardiology.


Questions and Answers
  • 1. 

    An ECG measures....

    • A.

      The contraction

    • B.

      The stimulus of a contraction

    • C.

      The electric currents of the contraction

    • D.

      The stimulus of the electric current

    Correct Answer
    B. The stimulus of a contraction
    Explanation
    An ECG (electrocardiogram) measures the electrical activity of the heart. It records the electrical impulses that stimulate the contraction of the heart muscles. These electrical impulses are responsible for initiating the contraction of the heart, which pumps blood throughout the body. Therefore, the correct answer is "The stimulus of a contraction."

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  • 2. 

    The SA node, also known as pacemaker, is the point of origin of electrical activity.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The SA node, or sinoatrial node, is indeed the point of origin of electrical activity in the heart. It is located in the right atrium and generates electrical impulses that regulate the heart's rhythm. These impulses spread throughout the atria, causing them to contract and pump blood into the ventricles. From there, the electrical activity is conducted to the ventricles, causing them to contract and pump blood out of the heart. Therefore, the statement "The SA node is the point of origin of electrical activity" is true.

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  • 3. 

    Cells of the heart are electrically linked. Depolarization spreads quickly from the _______ to the ______ in a ____ direction towards the ventricle, finally reach the ______.

    • A.

      SA node, ventricles, caudal, atria, AV node

    • B.

      SA node, ventricles, cranial, atria, AV node

    • C.

      SA node, atria, caudal, ventricles, AV node

    • D.

      SA node, atria, cranial, ventricles, AV node

    Correct Answer
    C. SA node, atria, caudal, ventricles, AV node
    Explanation
    That is one horrible question, isn't it? :D

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  • 4. 

    Electrical activity moves from the AV node to the ________.

    • A.

      Bundle of Dis

    • B.

      Bundle of Dat

    • C.

      Bundle of Her

    • D.

      Bundle of His

    Correct Answer
    D. Bundle of His
    Explanation
    Electrical activity moves from the AV node to the Bundle of His. The Bundle of His is a specialized bundle of fibers located in the heart that conducts electrical impulses from the atrioventricular (AV) node to the ventricles. This allows for coordinated contraction of the ventricles, ensuring efficient pumping of blood throughout the body.

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  • 5. 

    The Purkinje Fibers direct the wave of depolarization through the ____ in a ___ direction.

    • A.

      Ventricles, cranial

    • B.

      Ventricles, caudal

    • C.

      Atria, cranial

    • D.

      Atria, caudal

    Correct Answer
    A. Ventricles, cranial
    Explanation
    The Purkinje fibers are specialized cardiac muscle cells that conduct electrical impulses through the ventricles of the heart. These fibers play a crucial role in coordinating the contraction of the ventricles, ensuring that blood is efficiently pumped out of the heart. The term "cranial" refers to the head or towards the head, while "caudal" refers to the tail or towards the tail. Therefore, the correct answer "Ventricles, cranial" indicates that the Purkinje fibers direct the wave of depolarization through the ventricles in a direction towards the head.

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  • 6. 

    It is perfectly fine to get an ECG off a patient lying on a steel table with zero blankets and left unsupervised (: 

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    If you chose true, you might need some coffee.

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  • 7. 

    How do you prevent the alligator clips from pinching/bruising your patient?

    • A.

      Easy! Place them above some gauze!

    • B.

      You don't need to. Animals don't feel pain like we do.

    • C.

      You file them down.

    • D.

      You spray xylocaine on the skin before placing them.

    Correct Answer
    C. You file them down.
    Explanation
    Filing down the alligator clips helps to smooth out any rough edges or sharp points that could potentially pinch or bruise the patient's skin. By doing so, the risk of causing discomfort or injury to the patient is minimized.

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  • 8. 

    How would position your patient for an ECG?

    • A.

      Left lateral recumbency for dogs, right lateral recumbency for cats, standing for large animals

    • B.

      Right lateral recumbency for dogs, sternal recumbency for cats, standing for large animals

    • C.

      Dorsal recumbency for small animals, standing for large animals

    • D.

      All species in right lateral recumbency

    Correct Answer
    B. Right lateral recumbency for dogs, sternal recumbency for cats, standing for large animals
    Explanation
    The correct answer states that for dogs, the patient should be positioned in right lateral recumbency, which means lying on the right side. For cats, the patient should be positioned in sternal recumbency, which means lying on the sternum or chest. And for large animals, they should be positioned in a standing position. This positioning is important for obtaining accurate and clear ECG readings from different species.

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  • 9. 

    Where are you going to attach the ECG leads?

    • A.

      Left arm, right leg, left leg

    • B.

      Right arm, right leg, left leg

    • C.

      Right arm, left arm, right leg

    • D.

      Right arm, left arm, left leg

    Correct Answer
    D. Right arm, left arm, left leg
    Explanation
    The correct answer is to attach the ECG leads to the right arm, left arm, and left leg. This is the standard placement for the leads in a 12-lead ECG. The right arm lead is placed on the right side of the chest, just below the collarbone. The left arm lead is placed on the left side of the chest, just below the collarbone. The left leg lead is placed on the lower left side of the abdomen, near the hip bone. This placement allows for accurate measurement and recording of the electrical activity of the heart from different angles.

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  • 10. 

    The standard settings for an ECG are...

    • A.

      22mm/sec

    • B.

      25mm/sec

    • C.

      23mm/sec

    • D.

      24mm/sec

    Correct Answer
    B. 25mm/sec
    Explanation
    The standard settings for an ECG are typically set at 25mm/sec. This refers to the speed at which the ECG paper moves through the machine during recording. The higher the speed, the faster the paper moves and the shorter the duration of the recorded ECG. This setting is commonly used as it provides a good balance between capturing enough data for analysis and minimizing the duration of the test.

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  • 11. 

    Check all of the information that should be added to your patient's chart after an ECG is done.

    • A.

      Date

    • B.

      DVM

    • C.

      Time of procedure

    • D.

      Patient ID

    • E.

      Patient signalment

    • F.

      Drugs used

    • G.

      Positioning of the patient

    Correct Answer(s)
    A. Date
    B. DVM
    D. Patient ID
    F. Drugs used
    G. Positioning of the patient
    Explanation
    After an ECG is done, it is important to add the date, DVM (Doctor of Veterinary Medicine), patient ID, drugs used, and positioning of the patient to the patient's chart. The date is necessary to keep track of when the ECG was performed. The DVM's name is important for documentation purposes and to identify who performed the procedure. The patient ID helps in correctly identifying the patient and matching the ECG results to the correct patient. The drugs used during the procedure should be noted for future reference and to monitor any potential effects. The positioning of the patient during the ECG is crucial information as it can impact the interpretation of the results.

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  • 12. 

    On an electrocardiograph, you can get a heart rate by counting the R-R intervals in a three second strip. Then, you multiply that number by 40 to determine the heart rate in one minute.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    This statement is false because to determine the heart rate in one minute, you should multiply the number of R-R intervals by 20, not 40.

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  • 13. 

    You observe the waves and tracing on your electrocardiograph. What are you trying to determine?

    • A.

      Heart rate

    • B.

      Repolarization time of the atria

    • C.

      Depolarization time of the ventricles

    • D.

      Heart rhythm

    Correct Answer
    D. Heart rhythm
    Explanation
    By observing the waves and tracing on the electrocardiograph, you can determine the heart rhythm. The electrocardiograph records the electrical activity of the heart, which is represented by different waves. By analyzing the pattern and intervals between these waves, you can identify the regularity or irregularity of the heart's electrical signals, thus determining the heart rhythm. This information is crucial for diagnosing various cardiac conditions and abnormalities.

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  • 14. 

    Do you the correct order of cardiac impulse?

    • A.

      SA node -> ventricles -> AV node -> atria

    • B.

      SA node -> atria -> AV node -> ventricles

    • C.

      AV node -> atria -> SA node -> ventricles

    • D.

      AV node -> ventricles -> SA node -> atria

    Correct Answer
    B. SA node -> atria -> AV node -> ventricles
    Explanation
    The correct order of the cardiac impulse starts with the SA node, which is located in the right atrium. The SA node generates an electrical signal that causes the atria to contract. The impulse then travels to the AV node, located between the atria and ventricles, where it is briefly delayed to allow for complete atrial contraction. Finally, the impulse is conducted to the ventricles, causing them to contract and pump blood out of the heart.

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  • 15. 

    Sinus rhythm is the normal mechanism for initiating cardiac systole.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    Sinus rhythm refers to the normal electrical activity of the heart, where the electrical impulses originate from the sinoatrial (SA) node. This rhythm is responsible for initiating the contraction of the heart muscles, leading to cardiac systole. Therefore, the statement is correct in stating that sinus rhythm is the normal mechanism for initiating cardiac systole.

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  • 16. 

    What do you call a disturbance in the conduction of the impulse such that the normal sequence of activation of the atria and ventricle is altered?

    • A.

      Tachycardia

    • B.

      Arrhythmia

    • C.

      Sinus arrhythmia

    • D.

      Cardiac tamponade

    Correct Answer
    B. Arrhythmia
    Explanation
    Arrhythmia is the correct answer because it refers to a disturbance in the conduction of the impulse that alters the normal sequence of activation of the atria and ventricle. Tachycardia refers to a fast heart rate, sinus arrhythmia is a normal variation in heart rate, and cardiac tamponade is a condition where fluid accumulates in the pericardial sac, affecting heart function.

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  • 17. 

    What do you call alternating periods of slower and more rapid heart rates related to respiration? (HR increasing with inspiration, decreasing with expiration)

    • A.

      Tachypneumocardia

    • B.

      Arrhythmia

    • C.

      Sinus arrhythmia

    • D.

      Bradycardia

    Correct Answer
    C. Sinus arrhythmia
    Explanation
    Sinus arrhythmia is the correct answer because it refers to the alternating periods of slower and more rapid heart rates related to respiration. During inspiration, the heart rate increases, and during expiration, the heart rate decreases. This is a normal physiological response and commonly occurs in healthy individuals. Tachypneumocardia refers to a rapid heart rate related to rapid breathing, arrhythmia refers to an irregular heart rhythm, and bradycardia refers to a slow heart rate.

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  • 18. 

    Sinus arrhythmia is normal in both dogs and cats.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    Meow-meows shouldn't have sinus arrhythmeows.

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  • 19. 

    Atrial fibrillation and atrial standstill can be detected if there is an absence of.........

    • A.

      QRS complex

    • B.

      T waves

    • C.

      P waves

    • D.

      ST intervals

    Correct Answer
    C. P waves
    Explanation
    Atrial fibrillation and atrial standstill can be detected if there is an absence of P waves. P waves represent the electrical activity in the atria, and their absence indicates a lack of normal atrial depolarization. In atrial fibrillation, the atria quiver instead of contracting effectively, resulting in irregular and chaotic electrical activity with no discernible P waves. In atrial standstill, there is a complete absence of atrial electrical activity, including P waves. Therefore, the absence of P waves is a key indicator for detecting these conditions.

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  • 20. 

    An ectopic pacemaker below the bundle of His or a lesion in the intraventricular conduction sytem can be detected if you observe.....

    • A.

      Wide P waves

    • B.

      Wide QRS complexes with various configurations

    • C.

      Wide QRS complexes

    • D.

      Difference in amplitudes

    Correct Answer
    B. Wide QRS complexes with various configurations
    Explanation
    An ectopic pacemaker below the bundle of His or a lesion in the intraventricular conduction system can lead to abnormal electrical conduction in the ventricles. This can result in wide QRS complexes on an electrocardiogram (ECG). The term "various configurations" suggests that the QRS complexes may have different shapes or durations, indicating irregular ventricular depolarization. This can be a characteristic finding in conditions such as bundle branch blocks or ventricular ectopy. Therefore, observing wide QRS complexes with various configurations can help detect these abnormalities in the conduction system.

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  • 21. 

    How many P waves should there be for every QRS complex normally?

    • A.

      2 P waves for every QRS complex

    • B.

      1 P wave for every 2 QRS complexes

    • C.

      1 P wave for every QRS complex

    • D.

      I'm not a cardiothoracic surgeon. Leave me alone.

    Correct Answer
    C. 1 P wave for every QRS complex
    Explanation
    The correct answer is 1 P wave for every QRS complex. In a normal EKG, each QRS complex is preceded by a single P wave, representing atrial depolarization. This indicates that the electrical signal is originating in the atria and then conducting to the ventricles, resulting in a coordinated heartbeat.

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  • 22. 

    Check all the possible causes of Sinus Tachycardia

    • A.

      Pain

    • B.

      Fever

    • C.

      Anemia

    • D.

      Weakness

    • E.

      Reduced cardiac input

    • F.

      Reduced cardiac output

    • G.

      Hyperthyroidism

    • H.

      Hypothyroidism

    • I.

      Excitement

    • J.

      Dyspnea

    Correct Answer(s)
    A. Pain
    B. Fever
    C. Anemia
    F. Reduced cardiac output
    G. Hyperthyroidism
    I. Excitement
    Explanation
    Sinus tachycardia is a condition characterized by a faster-than-normal heart rate. Pain, fever, anemia, reduced cardiac output, hyperthyroidism, and excitement are all possible causes of sinus tachycardia. Pain and fever can stimulate the sympathetic nervous system, leading to an increased heart rate. Anemia reduces the oxygen-carrying capacity of the blood, causing the heart to beat faster to compensate. Reduced cardiac output means that the heart is not pumping enough blood, which can result in a faster heart rate. Hyperthyroidism is a condition where the thyroid gland produces an excess amount of thyroid hormones, leading to an increased heart rate. Excitement can also stimulate the sympathetic nervous system, causing tachycardia.

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  • 23. 

    What is caused by numerous disorganized atrial impulses frequently bombarding the AV node? (This means war....)

    • A.

      Atrial defibrillation

    • B.

      Atrial repolarization

    • C.

      Atrial fibrillation

    • D.

      Civil war of the Atria and AV node in 1923

    Correct Answer
    C. Atrial fibrillation
    Explanation
    Atrial fibrillation is caused by numerous disorganized atrial impulses frequently bombarding the AV node. In atrial fibrillation, the electrical signals in the atria become chaotic, causing the atria to quiver instead of contracting normally. This can lead to an irregular and fast heart rate.

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  • 24. 

    Premature Ventricular Contractions (PVCs or VPC) are: 

    • A.

      Cardiac impulses initiated within the atria instead of the sinus node.

    • B.

      Cardiac impulses initiated with the AV node instead of the sinus node.

    • C.

      Cardiac impulses initiated within the ventricles instead of the sinus node.

    • D.

      Cardiac impulses initiated within the Purkinje Fibers instead of the sinus node.

    Correct Answer
    C. Cardiac impulses initiated within the ventricles instead of the sinus node.
    Explanation
    Premature Ventricular Contractions (PVCs or VPC) occur when there is an abnormal electrical impulse originating from the ventricles instead of the sinus node, which is the normal pacemaker of the heart. This can cause a premature contraction of the ventricles, disrupting the regular rhythm of the heart.

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  • 25. 

    Ventricular fibrillation is when.....

    • A.

      Cells of the ventricular myocardium depolarize in a chaotic and uncoordinated manner.

    • B.

      Cells of the atria depolarize in a chaotic and uncoordinated manner.

    • C.

      Cells of ventricular myocardium repolarize in a chaotic and uncoordinated manner.

    • D.

      Cells of atria repolarize in a chaotic and uncoordinated manner.

    Correct Answer
    A. Cells of the ventricular myocardium depolarize in a chaotic and uncoordinated manner.
    Explanation
    Ventricular fibrillation is a life-threatening arrhythmia where the cells of the ventricular myocardium depolarize in a chaotic and uncoordinated manner. This results in the ventricles quivering instead of contracting effectively, leading to a loss of effective blood flow. It is a medical emergency that requires immediate intervention, such as defibrillation, to restore normal heart rhythm.

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  • 26. 

    Ventricular fibrillation can result in cardiac arrest. 

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    I swear it's true. Ask Dr. Yang.

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  • 27. 

    Which one do you like?

    • A.

      Option 1

    • B.

      Option 2

    • C.

      Option 3

    • D.

      Option 4

    Correct Answer
    A. Option 1
  • 28. 

    What is going on here, Dr ?

    • A.

      Atrial fibrillation

    • B.

      Cardiac arrhythmia

    • C.

      Repolarization of the ventricular myocardium

    • D.

      Ventricular fibrillation

    Correct Answer
    D. Ventricular fibrillation
    Explanation
    HE'S IN V-FIB ! GET A CRASH CART !

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  • 29. 

    A number of abnormalities of the SA node were observed in your ECG. What is this condition called? 

    • A.

      Shocked Sinus Syndrome

    • B.

      Slow Sinus Syndrome

    • C.

      Sarcastic Sinus Syndrome

    • D.

      Sick Sinus Syndrome

    Correct Answer
    D. Sick Sinus Syndrome
    Explanation
    Sever sinus bradycardia, severe sinus block, bradycardia-tachycardia syndrome.

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  • 30. 

    In the second degree AV block, Type I has ____ P-R intervals whereas Type II has _____ P-R intervals. (Separate words with a comma)

    Correct Answer
    variable, constant
    Explanation
    In the second degree AV block, Type I, also known as Wenckebach, is characterized by a progressive lengthening of the P-R interval until a P wave is eventually blocked and not conducted. This results in a variable P-R interval pattern. On the other hand, Type II, also known as Mobitz II, is characterized by intermittent blockage of P waves without progressive lengthening. In Type II, the P-R interval remains constant before a blocked P wave occurs. Therefore, Type I has variable P-R intervals, while Type II has constant P-R intervals.

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  • 31. 

    In a third degree AV block, ventricular rate is slower than atrial rate. 

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    More P waves than QRS complexes.

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  • 32. 

    The absence of pacemaker impulses is called _________.

    • A.

      Systole

    • B.

      Diastole

    • C.

      Repolarization

    • D.

      Asystole

    Correct Answer
    D. Asystole
    Explanation
    Asystole refers to the absence of pacemaker impulses, which means that there is a lack of electrical activity in the heart. This condition is commonly known as cardiac arrest, where the heart stops beating and there is no blood flow to the body. It is a life-threatening situation that requires immediate medical intervention, such as cardiopulmonary resuscitation (CPR) and defibrillation, to restore the heart's normal rhythm.

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  • 33. 

    What's this ?!

    • A.

      The beginning of a cardiac impulse

    • B.

      Cardiac Arrest

    • C.

      The end of a cardiac cycle

    • D.

      One of the ECG leads got disconnected.

    Correct Answer
    B. Cardiac Arrest
    Explanation
    Beep. Beep. Beeeeeeeeeeeeeeeeeeeeeeep. Time of death 5pm (in OR T130).

    GOD DAMMIT ! *Throws surgical gown and storms out of the room*

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  • 34. 

    Electromechanical Dissociation is.......

    • A.

      Electrical activity from the heart that is completely chaotic.

    • B.

      Electrical activity from the heart that has contractions in random spots.

    • C.

      Electrical activity from the heart where no contractions occur, with absence of pulse and blood pressure.

    • D.

      It is what happens to your brain when you study sadpro.

    Correct Answer
    C. Electrical activity from the heart where no contractions occur, with absence of pulse and blood pressure.
    Explanation
    You're being deceived.

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  • 35. 

    When can you operate a defibrillator ?

    • A.

      When your patient is in V-Fib

    • B.

      When your patient has cardiac arrhythmia

    • C.

      When you wana act like you're a doctor on Grey's Anatomy.

    • D.

      When the patient has electromechanical dissociation.

    Correct Answer
    A. When your patient is in V-Fib
    Explanation
    He's in V-Fib. Get a D-Fib.

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  • 36. 

    The reason why this question exists is simply because I like even numbers.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    Yes, absolutely.

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Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 20, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Dec 16, 2015
    Quiz Created by
    Catherine Halcomb
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