Practice Test Geeks(CET) Certified Electrocardiogram Technician Practice Test
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ECG Equipment Operation & Maintenance Flashcards

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

Read the first 7 ECG Equipment Operation & Maintenance flashcards as text

  1. Which of the following is NOT a required element of an ECG machine's pre-use equipment check?

    Answer: Confirming the machine's serial number matches the department inventory

    Serial number inventory matching is an administrative task, not a pre-use clinical equipment check; the functional items (calibration, cables, paper) must be verified before patient use.

  2. When the ECG tracing shows 'wandering baseline' that worsens with the patient's breathing cycle, the technician should first:

    Answer: Check for loose or poorly adhered limb electrodes and re-prep the skin

    Respiratory baseline wander is most often caused by limb electrode movement or poor skin contact; re-prepping and securing electrodes resolves the artifact before adjusting filters.

  3. What is the correct placement for the V6 electrode?

    Answer: Fifth intercostal space, left midaxillary line

    V6 is placed at the fifth intercostal space at the left midaxillary line, completing the horizontal precordial plane with V1-V5.

  4. A multichannel ECG machine records leads simultaneously in groups. What is the advantage of simultaneous 12-lead acquisition over sequential acquisition?

    Answer: It captures all leads at the same moment, eliminating timing differences between leads

    Simultaneous acquisition records all 12 leads at the same instant, ensuring that any transient arrhythmia or ST change appears in all leads at the same time for accurate comparison.

  5. If an ECG machine fails electrical safety testing and shows excessive leakage current, what is the correct action?

    Answer: Remove the machine from service immediately and tag it for biomedical repair

    Any device failing leakage current safety limits must be immediately taken out of service and tagged for biomedical engineering repair to prevent patient electrical hazard.

  6. Which ECG artifact is characterized by irregular, chaotic baseline deflections that vary in amplitude and frequency, typically caused by patient muscle activity?

    Answer: Somatic tremor artifact

    Somatic tremor artifact from muscle movement produces irregular, high-frequency baseline noise that can mimic atrial fibrillation or obscure ST segments.

  7. According to standard ECG paper scale, how many small squares represent one large square on the horizontal (time) axis?

    Answer: 5 small squares

    Each large square on ECG paper contains 5 small squares; at standard 25 mm/sec speed, each small square = 0.04 sec and each large square = 0.20 sec.