
Causes and Risks of Aortic Dilation
Recently, color Doppler echocardiography revealed widening of the aortic root of the heart, along with symptoms of chest tightness and palpitations. Could you please explain the causes and potential risks associated with aortic root dilation?

The main causes of aortic enlargement include hypertension, hyperlipidemia, smoking, diabetes, and obesity. Hypertension is the most common factor; if left uncontrolled over a long period, it can accelerate aortic sclerosis, reduce elasticity, and subsequently lead to aortic dilation and enlargement. The dangers of aortic enlargement are primarily reflected in the following aspects:
1. In cases of isolated ascending aortic dilation without aortic dissection, the risk is relatively low. However, if aortic dissection or valvular disease is present, severe consequences may occur, such as massive bleeding, shock, coma, or even death.
2. Aortic dissection: Blood under high pressure may penetrate the inner lining of the aorta, forming a dissection that blocks blood flow and damages vital organs such as the heart, brain, and kidneys, potentially leading to sudden death.
3. Aortic aneurysm: Prolonged aortic dilation may cause thinning of the aortic wall and formation of an aortic aneurysm. If the aneurysm ruptures, it can cause life-threatening hemorrhage.
4. Vascular complications: Aortic enlargement may also affect other blood vessels, such as the coronary arteries, increasing the risk of cardiovascular diseases.
If you have any concerns, prompt medical consultation is recommended.