Regional wall motion abnormality

Generalized LV systolic dysfunction if established coronary disease

Pericardial effusion

Normal LV/RV wall motion (unless there is associated myocarditis, with elevated troponin)

Type A (involving ascending aorta)

Dilated ascending aorta

Dissection flap (seen in 90%)

Aortic regurgitation

Pericardial effusion (if there has been retrograde dissection into the pericardial space)

Type B (involving only the descending thoracic aorta)

A flap in the descending thoracic or abdominal aorta (50–70% cases)