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Practical Content and Preparation Flashcards

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

Read the first 7 Practical Content and Preparation flashcards as text

  1. When applying chest electrodes for a 12-lead ECG, V4 should be placed at:

    Answer: Fifth intercostal space, midclavicular line

    V4 is placed at the fifth intercostal space along the left midclavicular line, and V5/V6 are positioned relative to V4.

  2. An ECG technician notes that the patient has a permanent pacemaker. Which expected finding should be documented but does NOT indicate a problem?

    Answer: Pacemaker spikes followed by wide QRS complexes

    Ventricular pacing produces pacemaker spikes followed by wide, aberrant-appearing QRS complexes, which is the expected normal pacemaker pattern.

  3. Which rhythm is characterized by a P wave that follows (rather than precedes) the QRS complex?

    Answer: Junctional rhythm

    In junctional rhythms, the AV node fires and activates the ventricles before (or simultaneously with) retrograde atrial activation, placing the P wave after the QRS.

  4. During ECG acquisition, the standardization mark (calibration pulse) should show a deflection of:

    Answer: 1.0 mV (10 mm tall)

    Standard ECG calibration is 1 mV = 10 mm; the calibration pulse verifies the machine is recording at correct sensitivity.

  5. A patient with chest pain has ST elevation in leads V1–V4. Which coronary artery territory is most likely occluded?

    Answer: Left anterior descending artery (LAD)

    The LAD supplies the anterior wall and septum, so anterior STEMI (V1–V4 ST elevation) indicates LAD occlusion.

  6. Which of the following ECG findings suggests pericarditis rather than acute MI?

    Answer: Diffuse ST elevation with PR segment depression in multiple leads

    Pericarditis classically causes diffuse (saddle-shaped) ST elevation across many leads with PR depression, unlike the localized changes of MI.

  7. A Holter monitor is most appropriate for evaluating a patient who experiences palpitations:

    Answer: Intermittently throughout daily activities over 24–48 hours

    A Holter monitor records continuous ECG over 24–48 hours, capturing arrhythmias that occur unpredictably during normal daily activities.

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Sources & references

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  1. nhanow.com — Test delivery, score release, score validity, eligibility, passing score, renewal, retake policy · verified Oct 2026
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