How long do your angiographically normal coronary arteries remain normal? A pilot study.

Area of Science:

• Cardiology
• Geriatric Medicine
• Vascular Biology

Background:

• Coronary atherosclerosis is a known progressive condition.
• The progression in elderly patients with initially normal coronary arteries (NCAs) is less understood.

Purpose of the Study:

• To investigate the long-term development of obstructive coronary artery disease (OCAD) in elderly patients initially presenting with normal coronary arteries (NCAs).

Main Methods:

• Retrospective analysis of 189 elderly patients with NCAs undergoing repeat cardiac catheterization after at least 5 years.
• Evaluation of risk factors, including diabetes mellitus, age, and smoking, for OCAD development.

Main Results:

• 19% of patients initially with NCAs developed OCAD upon repeat catheterization.
• OCAD development occurred across all age groups studied.
• The combination of diabetes mellitus with age over 65 or with smoking significantly predicted OCAD development (P = .04).

Conclusions:

• Normal coronary arteries in elderly individuals do not preclude the future development of obstructive coronary artery disease.
• Specific risk factor combinations, notably diabetes with advanced age or smoking, are critical indicators for OCAD risk in this population.