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EKG Administration Flashcards

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

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  1. Which lead is considered the 'Gold Standard' for detecting ST-segment changes associated with myocardial infarction of the inferior wall?

    Answer: Leads II, III, and aVF

    Inferior wall MI changes are best seen in the inferior leads: II, III, and aVF, which look at the bottom of the heart.

  2. A patient's EKG shows no P waves and an irregularly irregular rhythm. This pattern is MOST consistent with:

    Answer: Atrial fibrillation

    The absence of distinct P waves combined with an irregularly irregular ventricular rhythm is the hallmark of atrial fibrillation.

  3. Before applying EKG electrodes, the medical assistant should prepare the patient's skin by:

    Answer: Cleaning with alcohol and allowing it to dry completely

    Cleaning the skin with alcohol removes oils and debris, and allowing it to dry prevents interference with electrode adhesion and conductivity.

  4. The PR interval on an EKG normally measures:

    Answer: 0.12 to 0.20 seconds

    A normal PR interval ranges from 0.12 to 0.20 seconds (3–5 small squares), representing atrial depolarization and AV node conduction delay.

  5. Which of the following is the CORRECT placement for lead aVR?

    Answer: Right arm electrode is the positive pole

    In augmented lead aVR, the right arm electrode serves as the positive pole, and it views the heart from the right shoulder perspective.

  6. A medical assistant records an EKG and notices that every other beat has a wide, bizarre QRS complex not preceded by a P wave. This MOST likely represents:

    Answer: Premature ventricular contractions (PVCs) in a bigeminy pattern

    A PVC bigeminy pattern consists of one normal beat alternating with one wide, abnormal QRS complex that arises from the ventricle without a preceding P wave.

  7. When documenting an EKG procedure, which information is MOST critical to record in the patient's chart?

    Answer: Date, time, patient's name, lead placement verification, and any symptoms reported

    Accurate documentation must include the date, time, patient identifier, confirmation of correct lead placement, and any symptoms the patient experienced during the recording.