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12 Lead ECG Mastery: Novice to Expert

Presented by: Karen Marzlin and Cynthia Webner

Save money! CNEA offers a 12 month subscription that includes ALL our online CE courses. Access to more than 240 CEs for one price. Click here to learn more.

Course Description:

The 12 lead ECG is a widely available and noninvasive assessment tool that provides timely information about the patient’s clinical condition. A high level of nursing knowledge and skill is necessary for an accurate assessment of often subtle and complex findings. ECG changes may represent an actual or impending cardiac emergency. ECG assessment skills are necessary to make appropriate decisions regarding the care of patients. A recent systematic review of nursing knowledge and the ECG identifies an urgent need to promote and maintain nurses’ competency in ECG interpretation (Chen et al., 2022). The content in this program ranges from foundational principles to advanced concepts necessary for the accurate interpretation of the electrocardiogram. During this session, RNs and APRNs develop skills in the interpretation of subtle and early signs of injury and ischemia, conduction abnormalities, myocardial mimics, and the use of the ECG in advanced rhythm interpretation. Participants are engaged in multiple practice ECGs and case examples which leads to increased confidence and improved clinical judgment.


  • Apply the foundational principles of ECG recording when evaluating an ECG in clinical practice.
  • Accurately identify the following findings on the ECG: RBBB, LBBB, left anterior hemiblock, atrial and ventricular hypertrophy.
  • Identify subtle and early signs of injury and ischemia, reciprocal changes, and evolutional changes seen in myocardial infarction.
  • Apply advanced concepts in ECG interpretation by detecting injury and ischemia in the setting of a BBB and anticipating complications based on type of myocardial infarction.
  • Investigate ECG changes associated with myocardial mimics including normal variants, chamber enlargement, and electrolytes.
  • Examine ECG signs and QRS morphology that allow for the accurate interpretation of wide complex tachyarrhythmias.

Course Content:

  • The Cardiac Electrical System
  • How Each Lead Records
  • Waveforms
  • Systematic ECG Evaluation
  • Axis
  • Bundle Branch Bocks and Hemiblocks
  • Hypertrophy and the ECG
  • The 3 Rules for Advanced Detection of Injury and Ischemia
  • Reciprocal Changes
  • Evolutional Changes in Myocardial Infarction
  • Specific Types of MIs
  • Drug and Electrolyte Effects
  • Myocardial Mimics
  • The Not so Common but Important
  • The ECG in the Differentiation of Wide Complex Tachycardias

Continuing Education:
11.42 hours of continuing education (contact hours) is be offered with this program. CNEA is a provider approved by the California Board of Registered Nursing, provider number 15714.

Online classes include 24/7 access to the course videos for 12 months from time of purchase. Downloadable course handouts available from the time of purchase.

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Cardiovascular Nursing Education Associates

Exceptional Nurses, Exceptional Patient Care

(206) 403-3486

3324 SW 172nd St. Burien, WA 98166