Relationship between retinopathy and asymptomatic atherosclerosis determined by measurement of carotid intima-media thickness in patients with type 2 diabetes mellitus.

ABSTRACT

OBJECTIVE: Presence of diabetic retinopathy (DR) may be used as an early marker of atherosclerosis in type 2 diabetes mellitus (DM) patients. This study aimed to investigate the relationship between the presence of DR and carotid intima-media thickness (CIMT), which is an indicator of early atherosclerosis in patients with type 2 DM. METHODS: Thirty DM patients with retinopathy (DR group), 28 DM patients without retinopathy (non-DR group), and 27 healthy controls (control group) were included in the study. CIMT was assessed using a high-resolution B-mode ultrasonography device. RESULTS: Mean CIMT was found to be 0.9±0.17 mm in the DR group, 0.8±0.16 mm in the non-DR group, and 0.7±0.13 mm in the control group. CIMT was found to be statistically significantly higher in the DR group compared to the other 2 groups (p<0.001). When multivariate analysis was performed, presence of DR still remained as an independent risk factor for increased CIMT values. CONCLUSION: Presence of DR in type 2 DM patients is an independent risk factor in terms of increased CIMT, which is considered to be a finding of subclinical atherosclerosis. Therefore, we believe that type 2 DM patients with retinopathy should be closely followed in terms of cardiovascular events.