Which risk factor modification is particularly important for patients with a small AAA?

• A. Sedentary lifestyle
• B. Smoking cessation
• C. High-protein diet
• D. Increased alcohol intake

Answer: (B)

The important idea here is how a common, modifiable risk factor influences the behavior of an abdominal aortic aneurysm, especially when it’s still small. Smoking drives faster growth and a higher risk of rupture in small AAAs through several mechanisms: it promotes chronic inflammation, increases oxidative stress, and stimulates enzymes that break down the elastic and collagen components of the vessel wall. Nicotine and other smoking-related toxins also raise blood pressure and wall stress. Because of these effects, quitting smoking has the most substantial impact on slowing aneurysm expansion and reducing rupture risk, more so than any other single lifestyle change.

Sedentary lifestyle isn’t the primary lever to pull in this scenario, and while exercise is generally good for vascular health when appropriate, it doesn’t carry the same proven, direkten impact on slowing small AAA progression. A high-protein diet and increased alcohol intake don’t have clear, strong links to changing the course of a small AAA in the same way smoking cessation does, and excessive alcohol can raise blood pressure, potentially worsening risk. So, among the options, stopping smoking stands out as the most important modification for someone with a small AAA.