Otterbein/Grant CRNA ECG III Quick Review

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| By Alainad3
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Alainad3
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Quizzes Created: 20 | Total Attempts: 6,280
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  • 1/11 Questions

    When identifying ischemia in the absence of LVH or LBBB, new ST elevation, or ST depression with T-wave changes must be identified in how many contiguous leads?

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About This Quiz

This Otterbein\/Grant CRNA ECG III Quick Review assesses understanding of myocardial ischemia, ECG changes, and related cardiology concepts. It tests knowledge crucial for medical professionals dealing with heart-related conditions, emphasizing intraoperative considerations and anatomical correlations.

Otterbein/Grant CRNA ECG III Quick Review - Quiz

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  • 2. 

    L BBB and LVH make the diagnosis of MI impossible (or rather difficult).

    • True

    • False

    Correct Answer
    A. True
    Explanation
    I'm not sure if it's just anterior and posterior or if it's all MI's...just remember to check for LVH and LBBB!

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  • 3. 

    Myocardial ischemia occurs when there is a relative lack of O2 supply to the myocardium and metabolite removal from the heart for a given O2 consumption; it is classically noted as symmetrical __ wave changes.

    Correct Answer
    T
    Explanation
    Myocardial ischemia occurs when there is a relative lack of oxygen supply to the myocardium and metabolite removal from the heart for a given oxygen consumption. It is classically noted as symmetrical T wave changes.

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  • 4. 

    The majority of ischemia occurs intraoperatively.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    80% occurs post-operatively

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  • 5. 

    ECG changes are an early indicator of myocardial ischemia.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    Ischemia cascade:
    Shift to anaerobic metabolism
    Diastolic dysfxn
    Systolic dysfxn
    Hemodynamic changes (dec. CO)
    ECG changes
    Angina

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  • 6. 

    When examining an EKG for a suspected posterior MI, you would look for ST ______ in leads V1 and V2.

    • Elevation

    • Depression

    Correct Answer
    A. Depression
    Explanation
    When examining an EKG for a suspected posterior MI, you would look for ST depression in leads V1 and V2. This is because ST depression in these leads is indicative of ischemia or injury in the posterior wall of the heart. It suggests that the blood supply to the posterior region of the heart is compromised, possibly due to a myocardial infarction. Therefore, the presence of ST depression in leads V1 and V2 can help confirm the diagnosis of a posterior MI.

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  • 7. 

    An infarction of which of the following areas would most likely have the greatest effect on SA/AV node conduction?

    • Inferior

    • Anterior

    • Posterior

    • Anterolateral

    Correct Answer
    A. Inferior
    Explanation
    Due to RCA involvement - RCA supplies SA node in 80% of population

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  • Apr 05, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Apr 05, 2015
    Quiz Created by
    Alainad3
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