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Left (A) and right (B) coronary angiograms revealed normal epicardial coronaries. Left ventriculogram in systole (C) and diastole (D) showed apical ballooning with basal hyperkinesis. Electrocardiogram at 1-year follow-up (E) with pacing-off (OVO mode) revealed the persistence of complete AV block with reversal of T-wave changes and normalization of QT interval. Note the slowing of escape rate to 42 bpm, suggesting the regression of sympathetic overactivity.
