Manifestations of acute dissection include all of the following except

Ref Harrison 19 th ed pg 1640 Hemopericardium and cardiac tamponade may complicate a type A lesion with retrograde dissection. Acute aoic regurgitation is animpoant and common (>50%) complication of proximal dissection. An electrocardiogram that shows no evidence of myocardial ischemia is helpful in distinguishing aoic dissection from myocardial infarction