Which condition features a ballooned or weakened arterial wall, most commonly located in the aorta or brain?

Which condition features a ballooned or weakened arterial wall, most commonly located in the aorta or brain?

• A. Endocarditis
• B. Aneurysm
• C. Myocarditis
• D. Pericarditis

Answer: (B)

Aneurysm is a dilation of a blood vessel caused by weakening of the arterial wall. Arteries can balloon out when the wall is compromised, and the aorta or brain arteries are common sites. This dilation can be congenital or gradual from conditions like hypertension or atherosclerosis, and it carries a risk of rupture with potentially catastrophic bleeding. In the brain, small weakened vessels can form berry aneurysms in the circle of Willis, and in the abdomen or chest, the aorta can develop an aneurysm. Endocarditis, myocarditis, and pericarditis involve infection or inflammation of heart valves, heart muscle, or the pericardial sac, not a ballooned arterial wall, so they don’t describe this vascular dilation.

Aneurysm is a dilation of a blood vessel caused by weakening of the arterial wall. Arteries can balloon out when the wall is compromised, and the aorta or brain arteries are common sites. This dilation can be congenital or gradual from conditions like hypertension or atherosclerosis, and it carries a risk of rupture with potentially catastrophic bleeding. In the brain, small weakened vessels can form berry aneurysms in the circle of Willis, and in the abdomen or chest, the aorta can develop an aneurysm. Endocarditis, myocarditis, and pericarditis involve infection or inflammation of heart valves, heart muscle, or the pericardial sac, not a ballooned arterial wall, so they don’t describe this vascular dilation.