Is diabetic retinopathy related to subclinical cardiovascular disease?

Published

Journal Article

OBJECTIVE: Persons with diabetic retinopathy (DR) have an increased risk of clinical cardiovascular events. This study aimed to determine whether DR is associated with a range of measures of subclinical cardiovascular disease (CVD) in persons without clinical CVD. DESIGN: Population-based, cross-sectional epidemiologic study. PARTICIPANTS: Nine hundred twenty-seven persons with diabetes without clinical CVD in the Multi-Ethnic Study of Atherosclerosis. METHODS: Diabetic retinopathy was ascertained from retinal photographs according to modification of the Airlie House Classification system. Vision-threatening DR (VTDR) was defined as severe nonproliferative DR, proliferative DR, or clinically significant macular edema. Subclinical CVD measures were assessed and defined as follows: high coronary artery calcium (CAC) score, defined as CAC score of 400 or more; low ankle-brachial index (ABI), defined as ABI of less than 0.9; high ABI, defined as ABI of 1.4 or more; high carotid intima-media thickness (IMT), defined as highest 25% of IMT; and carotid stenosis, defined as more than 25% stenosis or presence of carotid plaque. MAIN OUTCOME MEASURES: Associations between DR and subclinical CVD measures. RESULTS: The prevalence of DR and VTDR in this sample was 30.0% and 7.2%, respectively, and VTDR was associated with a high CAC score (odds ratio [OR], 2.33; 95% confidence interval [CI], 1.15-4.73), low ABI (OR, 2.54; 95% CI, 1.08-5.99), and high ABI (OR, 12.6; 95% CI, 1.14-140.6) after adjusting for risk factors including hemoglobin A1c level and duration of diabetes. The association between VTDR and high CAC score remained significant after further adjustment for hypoglycemic, antihypertensive, and cholesterol-lowering medications. Diabetic retinopathy was not significantly associated with measures of carotid artery disease. CONCLUSIONS: In persons with diabetes without a history of clinical CVD, the presence of advanced-stage DR is associated with subclinical coronary artery disease. These findings emphasize the need to be careful about the use of anti-vascular endothelial growth factor for the treatment of DR.

Full Text

Duke Authors

Cited Authors

  • Kawasaki, R; Cheung, N; Islam, FMA; Klein, R; Klein, BEK; Cotch, MF; Sharrett, AR; O'Leary, D; Wong, TY; Multi-Ethnic Study of Atherosclerosis,

Published Date

  • May 2011

Published In

Volume / Issue

  • 118 / 5

Start / End Page

  • 860 - 865

PubMed ID

  • 21168222

Pubmed Central ID

  • 21168222

Electronic International Standard Serial Number (EISSN)

  • 1549-4713

Digital Object Identifier (DOI)

  • 10.1016/j.ophtha.2010.08.040

Language

  • eng

Conference Location

  • United States