Relationship between Smoking and Abdominal Aorta Calcification on Computed Tomography

Area of Science:

• Cardiovascular Medicine
• Radiology
• Public Health

Background:

• Cigarette smoking is a known risk factor for atherosclerosis and vascular calcification.
• Abdominal aorta calcification (AAC) is a common finding on radiologic examinations.
• This study investigates the link between smoking and incidental AAC in middle-aged and elderly men.

Purpose of the Study:

• To evaluate the association between smoking-related factors and abdominal aorta calcification (AAC).
• To determine the impact of smoking duration, pack-years, and current smoking status on AAC risk.
• To provide evidence for smoking cessation counseling in clinical practice.

Main Methods:

• Analysis of abdominal computed tomography (CT) findings in 218 men aged 40-81.
• Logistic regression analysis was used to assess associations between smoking factors and AAC.
• Confounding variables including age, lifestyle, and chronic diseases were adjusted for.

Main Results:

• Smoking for at least 20 years significantly increased AAC risk (AOR, 5.22).
• Smoking 10+ pack-years showed increased AAC risk (10-20 pack-years: AOR, 4.54; >20 pack-years: AOR, 5.28).
• Both former and current smokers had higher AAC risk, with current smokers showing a greater association (AOR, 5.05). Even low daily smoking levels increased AAC risk.

Conclusions:

• Smoking duration (20+ years) and cumulative exposure (10+ pack-years) are significant risk factors for AAC.
• Even low levels of daily smoking increase the likelihood of developing AAC.
• Clinicians should emphasize smoking cessation and the importance of smoking duration in patient counseling.