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Glycaemic status influences the nature and severity of coronary artery disease

C Berry1, S Noble, J C Grégoire

  • 1Montreal Heart Institute and Université de Montréal, 5000 Belanger Street, Montreal, QC H1T 1C8, Canada.

Diabetologia
|March 13, 2010
PubMed

Insights

Higher fasting blood glucose and HbA1c levels correlate with increased coronary artery disease (CAD) severity and progression. Better glycemic control may benefit patients with diabetes or impaired glucose tolerance.

Area of Science:

  • Cardiovascular Medicine
  • Endocrinology
  • Metabolic Syndrome

Background:

  • Coronary artery disease (CAD) is a leading cause of mortality, particularly in individuals with diabetes.
  • Glycaemic status significantly impacts cardiovascular health, necessitating research into its specific effects on CAD.
  • Understanding the link between glucose metabolism and atherosclerosis is crucial for preventative strategies.

Purpose of the Study:

  • To investigate the association between glycaemic status (normoglycaemia, impaired fasting glucose, diabetes) and the severity of coronary artery disease (CAD).
  • To determine the relationship between glycaemic status and the progression of CAD over time.
  • To explore the correlation between fasting blood glucose (FBG) and HbA1c levels with measures of coronary atherosclerosis.

Main Methods:

  • A cohort of 426 patients with stable CAD underwent intravascular ultrasound (IVUS) at baseline and follow-up (mean 664 days).
  • Fasting blood glucose (FBG) and HbA1c were measured at baseline.
  • Patients were categorized into normoglycaemic, impaired fasting glucose, and diabetic groups.

Main Results:

  • Diabetic patients exhibited greater baseline coronary atheroma area compared to normoglycaemic and impaired fasting glucose groups (p<0.001).
  • Progression of atheroma area during follow-up was significantly higher in diabetic patients (1.86%) versus others (0.28-0.56%, p=0.0047).
  • Both FBG and HbA1c correlated significantly with baseline atheroma area and plaque volume, with HbA1c also correlating with plaque area change.

Conclusions:

  • Elevated fasting blood glucose, HbA1c, and the presence of diabetes are independently associated with increased coronary atherosclerosis severity and progression.
  • These findings suggest that improved glycemic control could be a key factor in mitigating CAD progression in at-risk populations.
  • The study underscores the importance of managing glucose metabolism for cardiovascular health in patients with or at risk for diabetes.
Abstract

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