Risk factor reduction in progression of angiographic coronary artery disease

Area of Science:

• Cardiology
• Vascular Medicine
• Preventive Cardiology

Background:

• Coronary artery disease (CAD) is a leading cause of mortality worldwide.
• Understanding factors influencing CAD progression is vital for patient management.
• Differentiating progressive from nonprogressive CAD in outpatients requires further investigation.

Purpose of the Study:

• To compare characteristics of outpatients with progressive versus nonprogressive coronary artery disease (CAD).
• To identify clinical factors associated with CAD progression in an outpatient cardiology setting.

Main Methods:

• Retrospective chart review of outpatients with at least two coronary angiographies (≥ 1 year apart).
• Progressive CAD defined by new CAD in previously disease-free vessels or new obstruction in previously non-obstructive vessels.
• Analysis included coronary risk factors, comorbidities, cardiovascular events, medications, serum low-density lipoprotein cholesterol (LDL-C), and blood pressure.

Main Results:

• 183 outpatients (mean age 71) were analyzed with a mean follow-up of 11 years.
• 59% (108/183) exhibited progressive CAD over a mean of 58 months between angiographies.
• Progressive CAD was associated with significantly higher mean arterial pressure (97±13 vs. 92±12 mm Hg; p<0.05).
• Serum LDL-C was insignificantly higher in progressive CAD patients (94±40 vs. 81±34 mg/dl; p=0.09).
• Medication use (statins, beta-blockers, ACE inhibitors/ARBs, aspirin) did not differ significantly between groups.

Conclusions:

• Elevated mean arterial pressure is a significant factor in CAD progression among outpatients.
• While not statistically significant, higher LDL-C levels trended with disease progression.
• Optimizing blood pressure and LDL-C control, alongside medical therapy, may be key to slowing coronary artery disease progression.