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Different manifestations of early repolarization. A: The J wave may be distinct or appear as a slur. In the latter case, part of the J wave is buried inside the QRS, resulting in an elevation of Jo. Patients with a distinct J wave have a worse prognosis than do patients with a slurred J wave. B: The ST segment may be upsloping, horizontal, or descending. Horizontal and descending ST segments are associated with a worse prognosis.
