Thoracic aortic dissection occurs when the intima of the aorta becomes compromised and “tears” or “dissects” a new layer that fills with blood between the intima and the media. This ...

In acute aortic regurgitation, pulmonary edema is almost universally present. If the aortic regurgitation is due to an aortic dissection, the mediastinum may appear widened. Echocardiography is ...