Advanced CRNA ECG Interpretation: Essential Concepts & Diagnostic

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  • 1/12 Questions

    Diagnosing LVH consists of adding the amplitude of the S wave in V1 with the ___ wave in V5, if the sum is >35, as well as ST depression and T wave inversion in V5 and V6.

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About This Quiz


This Advanced CRNA ECG Interpretation review focuses on critical cardiology concepts, emphasizing accurate ECG reading skills. Key areas include identifying QRS complex variations and diagnosing left ventricular hypertrophy. Tailored for advanced nursing professionals, this review sharpens diagnostic abilities essential for effective patient assessment and cardiac care management.

It serves as a concise yet comprehensive tool to reinforce ECG interpretation proficiency and support clinical decision-making in high-acuity settings.

Advanced CRNA ECG Interpretation: Essential Concepts & Diagnostic - Quiz

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  • 2. 

    Delta waves occur in several pre-excitation syndromes and produce a characteristic hump or slurring at the beginning of the ____.

    Explanation
    Delta waves are abnormal electrical waves that occur in the heart during certain pre-excitation syndromes, such as Wolff-Parkinson-White syndrome. These waves cause a characteristic hump or slurring at the beginning of the QRS complex on an electrocardiogram (ECG). The QRS complex represents the depolarization of the ventricles, so the presence of delta waves at the beginning of the QRS complex indicates an abnormal electrical pathway in the heart, which can lead to arrhythmias and other cardiac complications.

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  • 3. 

    Limb leads determine the axis of the frontal plane while precordial leads determine the axis of the _________ plane in the mediolateral direction.

    Explanation
    Limb leads determine the axis of the frontal plane, which is the plane that divides the body into front and back halves. On the other hand, precordial leads determine the axis of the horizontal plane in the mediolateral direction. The horizontal plane divides the body into upper and lower halves. Therefore, the correct answer is "Horizontal."

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  • 4. 

    The ___ interval is used to measure AV node conduction.

    Explanation
    The PR interval is used to measure AV node conduction. The PR interval represents the time it takes for the electrical signal to travel from the atria to the ventricles through the AV node. It is measured on an electrocardiogram (ECG) and is an important parameter in assessing the conduction system of the heart. A prolonged PR interval may indicate a delay in AV node conduction, while a shortened PR interval may suggest an accelerated conduction through the AV node.

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  • 5. 

    A tall R wave in V1 that progessively decreases through V4 is indicative of _____ ventricular hyptertrophy.

    Explanation
    A tall R wave in V1 that progressively decreases through V4 is indicative of right ventricular hypertrophy. This pattern is commonly seen in conditions such as pulmonary hypertension or chronic lung disease, where the right ventricle becomes enlarged and the electrical activity changes in the corresponding leads.

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  • 6. 

    The ___ interval represents the entire time of systole.

    Explanation
    Normal is 0.44 +/- 0.02 seconds

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  • 7. 

    Which of the following are not part of the hexaxial lead system?

    • Bipolar limb leads

    • Augmented limb leads

    • Precordial leads

    Correct Answer
    A. Precordial leads
    Explanation
    The hexaxial lead system consists of six leads that are used to measure the electrical activity of the heart from different angles. The bipolar limb leads and augmented limb leads are both part of the hexaxial lead system. However, the precordial leads, also known as chest leads, are not part of the hexaxial lead system. Precordial leads are placed on the chest to provide a different perspective of the heart's electrical activity.

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  • 8. 

    As the QRS complex progresses from V1-V6, S wave amplitude _________ and R wave amplitude ___________.

    • Decreases, increases

    • Increases, decreases

    • Decreases, decreases

    • Increases, increases

    Correct Answer
    A. Decreases, increases
    Explanation
    Poor R wave progression noted in: LVH, RVH, anterior MI, emphysema, L BBB, misplaced leads

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  • 9. 

    Myocardial ischemia and inflammation frequently cause peaked T waves.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    Primary T wave inversion

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  • Current Version
  • Jun 20, 2025
    Quiz Edited by
    ProProfs Editorial Team
  • Apr 05, 2015
    Quiz Created by
    Alainad3
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