12-Lead Electrocardiography a comprehensive course Adam Thompson, EMT-P, A.S.
Benign Early Repolarization (BER)• BER may present with an appearance of ST-elevation.• Notched J points are the most commonly taught indicator of “early repol”.• The ST-segment morphology is the easiest way to determine malignancy of the finding.• LOOK for reciprocal changes!!!
ST-Segment Morphology Concave• Concave ST-Elevation is generally more Convex benign. – However, an MI may present with concave ST-Elevation.• Convex ST-Elevation is almost always an indication of an MI. J-Point J-Point
Benign Early Repolarization • Notched J-Points are sure indicators of benign early repolarization
Right Bundle Branch Block• A conduction delay due to blockage of the only right fascicle.• ST-segment usually not altered by the normal T wave discordance of RBBB.• QRS duration > 120 ms with positive terminal QRS deflection in V1.