Aortic dissection involves a tear in the inner lining of the aorta causing blood to split the wall layers. Which option best describes this condition?

• A. Aortic aneurysm
• B. Coronary artery disease
• C. Aortic dissection
• D. Myocardial infarction

Answer: (C)

Aortic dissection is defined by a tear in the inner lining of the aorta that lets blood enter the wall and split its layers, creating a false channel alongside the true lumen. The description in the prompt matches this exactly, making it the best choice. An aortic aneurysm is a dilation of the vessel due to weakening of all wall layers, not a tear that splits the wall. Coronary artery disease involves plaque buildup in the heart’s arteries, which can lead to angina or heart attack but does not describe a tear and separation of the aortic wall layers. Myocardial infarction is heart muscle death from blocked blood flow in a coronary artery, again not a dissection of the aorta. This condition is a medical emergency requiring swift stabilization and definitive management.