Acquiring A 12 Lead ECG By The EMT-basic

12 Questions | Total Attempts: 464

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ECG Quizzes & Trivia

It will soon be one week since the training session on 12 Lead ECG acquisition by the EMT-B. As a method to evaluate your new knowledge please take the following brief quiz. Feedback will be provided and is only intended to reinforce key points from the session.


Questions and Answers
  • 1. 
    While on an EMS run, a 60 year old male complains of shortness of breath with pain in his jaw traveling down to his left arm.  He is also complaining of intermittent nausea.  He appears to be sweaty and apprehensive.  After acquiring the LP15 and equipment, you decide to take a 12 lead ECG per protocol.  The first thing to do after explaining the procedure to the patient is to:  
    • A. 

      Make sure that patient assisted nitroglycerin and aspirin are administered to the patient before obtaining the ECG.

    • B. 

      Prep the skin by lightly scrubbing it with an alcohol and gauze pad for good electrode contact.

    • C. 

      Wait for ALS personnel to arrive on scene since they can analyze the ECG.

    • D. 

      Shave off very light hair on the patient's chest in non-essential areas.

  • 2. 
    There are ____ limb leads and ____chest leads to place before acquiring the 12 lead ECG.
    • A. 

      6,6

    • B. 

      2,8

    • C. 

      4,6

    • D. 

      4,8

  • 3. 
    For patient comfort while placing electrodes, it helps to:
    • A. 

      Gently press the electrodes onto the chest without the lead wires attached.

    • B. 

      Firmly press the electrodes onto the chest; then attach the lead wires.

    • C. 

      Pre-attach the lead wires to the electrodes before placement onto the chest.

    • D. 

      Let the patient place the electrodes onto his/her chest with direction from the EMT.

  • 4. 
    Which of the following items increase the likelihood that a clear 12 lead ECG tracing is acquired?
    • A. 

      Skin preparation to remove oils, shaving excessively hairy areas on the chest.

    • B. 

      Having the patient in a reclining position and remaining still.

    • C. 

      Having the squad driver pause at a stop sign or briefly pulling off the street.

    • D. 

      All these are important in obtaining a clear ECG reading.

  • 5. 
    Obtaining more than one 12 lead ECG tracing is desirable during the EMS run with a suspected AMI patient.
    • A. 

      True - the ECG can change over time and with EMS treatment; comparison of previous 12 leads is beneficial.

    • B. 

      False - one ECG is usually sufficient; others delay patient transport.

  • 6. 
    A helpful memory aid to place the limb leads is the statement:
    • A. 

      White over right, smoke (black) over fire (red).

    • B. 

      Red is right, black is over white.

    • C. 

      White is right, red (fire) over smoke (black).

    • D. 

      Green is ground, fire and smoke calls for an engine.

  • 7. 
    When placing limb and chest leads, correct placement of electrodes is important.  We locate landmarks by identifying which areas of the chest?
    • A. 

      Xiphoid process, sternum, humerus, umbilicus

    • B. 

      Hands, feet, ribs, shoulder blades, sternum

    • C. 

      Clavicles, chest, intercostal spaces, sternum, axillary

  • 8. 
    When placing chest leads, we are primarily concerned with locating which areas?
    • A. 

      2nd and 3rd intercostal spaces

    • B. 

      4th and 5th intercostal spaces

    • C. 

      Mid-clavicular and mid-axillary points (only)

    • D. 

      1st and 2nd intercostal spaces

  • 9. 
    After placement of the limb and chest leads, you press the 12 lead button on the LP15, and the screen reads "noisy" or "unable to obtain".  Which of the following might be reasons the LP15 did not acquire the reading?
    • A. 

      The patient was raising his head to see what was happening and was pulling on the cot side bars.

    • B. 

      An electrode was not firmly attached to the patient's chest.

    • C. 

      You were operating the suction machine directly over the LP15.

    • D. 

      All of these (and more) may affect the LP15 from acquiring the reading/tracing.

  • 10. 
    Which of the following statements best sums up the need for all EMS providers to have the ability to acquire/transmit a 12 lead ECG when a suspected acute myocardial infarction may be taking place?
    • A. 

      Time is muscle; identifying patients for quicker reperfusion therapy is the goal.

    • B. 

      Acquiring a 12 lead ECG may change our treatment in the field for suspected AMI patients.

    • C. 

      Acquiring a 12 lead ECG requires much greater on scene time and should only be utilized when it is clear the patient is experiencing an AMI.

    • D. 

      Its always nice to keep up on the latest technology.

  • 11. 
    I mentioned STEMI in the lecture on 12 lead ECG acquisition.  What does the abbreviation STEMI mean?  (Yes, I know you aren't allowed to interpret the ECG).  Note:  this is a "gimme" question, but all EMS personnel should have an awareness of STEMI.  
    • A. 

      Stop The Enlarging Man Inside

    • B. 

      ST (segment) Elevation Myocardial Infarction

    • C. 

      ST Ending Myocardial Infarction

  • 12. 
    According to Ohio Scope of Practice Laws, which statement(s) are true of EMT-Basics obtaining 12 lead ECGs?
    • A. 

      Unnecessary delays for transporting the patient are avoided.

    • B. 

      Written protocol and authorization by medical direction exists.

    • C. 

      The 12 lead is for transmitting to the ED.

    • D. 

      All these are true statements.

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