1093-P: Vascular Health across the Lifespan in Women with and without Type 1 Diabetes (TID)

Introduction: Cardiovascular disease (CVD) is the leading cause of death in people with T1D, and women with T1D are disproportionately affected. However, few studies have examined how T1D affects vascular health in women across the lifespan. Methods: Women ages 18-79 with (N=309) and without T1D (n=351) were examined cross-sectionally for markers of CVD: pulse wave velocity (PWV) , augmentation index (AiX) , pulse height (PH) , brachial artery distensibility (BrachD) , subendocardial viability index (SVI) , and carotid intima thickness (cIMT) . Menopausal status was self-reported. Body composition was measured by Dual Xray Absorptiometry. CVD markers were examined by diabetes status and age using linear regression models adjusted for menopausal status. Results: Age did not differ in women with and without diabetes (49 ± 12 vs. 50±14 years, p=0.32) . Women with T1D had higher systolic blood pressure (SBP) , cIMT, PWV and PH, and lower BrachD and SVI than non-diabetic women (Table 1) . Changes in blood pressure, cIMT, AiX, and SVI with age differed by diabetes status, as demonstrated by a significant interaction. While SBP and Aix were increased more in women with T1D at younger ages, cIMT and SVI worsened with age to a greater extent in T1D. Conclusions: Women with T1D have worse CVD markers than women without diabetes across the lifespan, with more arterial stiffness at younger ages and more atherosclerosis and lower SVI later in life.