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Electrocardiogram ValidityAka: EKG Validity

Criteria for EKG Validity
1. Limb Lead I is mirror of aVR
2. R Wave progression across precordial leads
  1. R Wave more prominent by lead V4
  2. Poor progression in anterior Myocardial Infarction
3. Voltage standardization mark at 1 mv
  1. Two big boxes tall (10 mm)
  2. Five small boxes wide (25 mm/sec)

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This page was written by Scott Moses, MD, and was last revised 1/26/2008. Please send comments and questions to the editor. Contact information may be found on the page About the Family Practice Notebook. These pages are best viewed with Microsoft Internet Explorer 5.0.