A 75-year-old male undergoes an abdominal CT looking for liver metastases from a known colonic adenoma. On the CT a 4.9 cm abdominal aortic aneurysm (AAA). Which of the following risk factors is NOT a contributor to this pt's AAA?
a) His age.
b) Hypercholesterolemia.
c) Diabetes.
d) Smoking.
e) Hypertension.
Answer:
c) Diabetes
The Aneurysm Detection and Management Veterans Affairs Cooperative Study Group trial (commonly referred to as the ADAM trial) found the following factors to be associated with increased risk for an AAA: advanced age, greater height, coronary artery disease, atherosclerosis, high cholesterol levels, hypertension, and smoking. The risk is lower in women, African Americans, and diabetic patients.
Reference: http://med-source.blogspot.com/2007/08/shelf-usmle-step-2-practice-questions.html
Image: http://www.nejm.org/doi/full/10.1056/NEJM199601043340106
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