Practice Lab Practical on the EKG

  1. In the above picture:
    1. Identify the highlighted portion.
    2. What mechanical event occurs during this portion of the EKG?

  2. In the above picture:
    1. Identify the highlighted portion.
    2. Describe the current electrical state of the ventricles.
    3. During this portion of the EKG, atrial volume is...

  3. In the above picture:
    1. Identify the highlighted portion.
    2. What electrical event occurs during this portion of the EKG?

  4. In the above picture:
    1. Identify the indicated portion.
    2. What electrical event does it represent?

  5. In the above picture:
    1. Identify the indicated portion.

  6. In the above picture:
    1. Identify the indicated portion.
    2. During this portion you would expect the bicuspid valve to be (open/closed).
    3. The pulmonary semilunar valve would be (open/closed).

  7. In the above picture:
    1. Identify the indicated portion.
    2. If this portion was measured to be 30mm in length, what is the ventricular rate?
    3. What is the atrial rate?

  8. In the above picture:
    1. Identify the indicated portion.

  9. In the above picture:
    1. Identify the indicated portion.
    2. During this portion, you would expect the AV valves to be (open/closed).

  10. As heart rate increases, which of the following items would decrease in length?
    1. PR interval
    2. QRS complex
    3. T wave duration
    4. TP segment
    5. All of the above

  11. If you measured your PR interval to be 3mm wide, what was its duration?

  12. If you measured the T wave to be 7mm tall, what was its voltage amplitude?


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