Risk factors associated with abdominal aortic aneurysm: a population-based study with historical and current data

Area of Science:

• Vascular Surgery
• Epidemiology
• Cardiovascular Disease Research

Background:

• Abdominal aortic aneurysm (AAA) is a significant vascular disease with complex etiology.
• Identifying modifiable and non-modifiable risk factors is crucial for prevention and early detection.
• Previous studies have explored various risk factors, but a comprehensive population-based analysis is needed.

Purpose of the Study:

• To define risk factors associated with the development of abdominal aortic aneurysm (AAA).
• To compare current and historical risk factors in a population-based case-control study.
• To investigate the interplay of inflammation, heredity, and traditional atherosclerosis risk factors in AAA pathogenesis.

Main Methods:

• A population-based case-control study comparing 35 AAA patients with 140 age- and sex-matched controls.
• Analysis included current risk factors and historical data from 12 years prior.
• Longitudinal assessment of risk factor changes over time and synergistic interactions.

Main Results:

• Elevated LDL cholesterol, total cholesterol, and triglycerides 12 years prior were associated with current AAA.
• Current AAA was linked to a history of atherosclerotic disease, family history of AAA, current smoking, HDL cholesterol, and hsCRP levels.
• A significant increase in hsCRP over 12 years was observed in AAA patients; synergistic interaction noted for atherosclerosis history, smoking, and family history.

Conclusions:

• AAA development involves complex factors, with some traditional atherosclerosis risk factors being associated while others are not.
• Inflammation (indicated by hsCRP) and heredity (family history) are significant factors in AAA development.
• The findings highlight the distinct etiological pathways of AAA compared to other forms of atherosclerosis.