This EKG shows a right bundle branch block (RBBB) characterized by esR' in V1, persistent slurred S in V6, and QRS duration of 0.12 (approx). There are Q waves and ST segment elevation is present in the inferior leads 2,3, and F. These are due to a sub-acute (hours to a day or two) inferior infarction. RBBB does NOT disrupt the normal sequence of activation of the left ventricle, so MI's can usually be interpreted as usual by the presence of Q waves and ST segment changes.
NOTE: EKG's are for internal educational purposes of the University of Massachusetts Department of Family Medicine. Please do not forward without permission from Dr. Golding!
