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EKG and Electrocardiography Flashcards

7 cards from real RMA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 EKG and Electrocardiography flashcards as text

  1. The T wave on an EKG represents which event?

    Answer: Ventricular repolarization

    The T wave reflects repolarization of the ventricles as they recover.

  2. If the right arm and left arm electrodes are accidentally reversed, lead I will typically show:

    Answer: An inverted (upside-down) P-QRS-T

    Reversing arm leads inverts the deflections in lead I, a classic sign of limb-lead reversal.

  3. Lead V4 is correctly placed at which location?

    Answer: Fifth intercostal space, midclavicular line

    V4 sits in the fifth intercostal space at the midclavicular line.

  4. A normal adult heart rate measured on an EKG falls within which range?

    Answer: 60–100 beats per minute

    A normal resting adult rate is 60 to 100 beats per minute.

  5. To quickly estimate heart rate, divide 300 by what?

    Answer: The number of large boxes between two R waves

    The 300 rule divides 300 by the large boxes between consecutive R waves to estimate rate.

  6. Which patient instruction helps obtain the clearest tracing during recording?

    Answer: Lie still and avoid talking

    Lying still and not talking minimizes muscle and movement artifact.

  7. Before applying limb electrodes over a very hairy area, the RMA should:

    Answer: Clip or shave the excess hair

    Clipping hair allows the electrode to make firm skin contact for a clean signal.