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Electrocardiography Technician Fundamentals Flashcards

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

Read the first 6 Electrocardiography Technician Fundamentals flashcards as text

  1. On ECG graph paper, each small box represents how many seconds at standard speed?

    Answer: 0.04 seconds

    At standard ECG paper speed of 25 mm/sec, each small (1 mm) box represents 0.04 seconds.

  2. Atrial fibrillation is characterized by which ECG finding?

    Answer: Absent P waves with an irregularly irregular rhythm

    Atrial fibrillation shows no identifiable P waves and an irregularly irregular ventricular rhythm due to chaotic atrial activity.

  3. Which ECG change is classically associated with acute myocardial infarction?

    Answer: ST segment elevation

    ST segment elevation in contiguous leads is a classic ECG sign of acute ST-elevation myocardial infarction (STEMI).

  4. A heart rate of 150 bpm with a narrow QRS and no visible P waves is most consistent with:

    Answer: Supraventricular tachycardia (SVT)

    A narrow-complex tachycardia at 150 bpm without visible P waves is characteristic of supraventricular tachycardia (SVT).

  5. Proper skin preparation before applying ECG electrodes includes:

    Answer: Shaving excess hair and cleaning the skin with alcohol

    Shaving excess hair and cleansing the skin with alcohol removes oils and dead skin cells to improve electrode contact.

  6. The T wave on an ECG represents:

    Answer: Ventricular repolarization

    The T wave represents ventricular repolarization, during which the ventricles recover electrically between beats.

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