699Are we treating our older generations appropriately?
Abstract Background This study aims to understand the disease burden of Atrial Fibrillation (AF) and how it is treated among older Australian women. Methods Data from the oldest cohort (born 1921-26) of the Australian Longitudinal Study of Women’s Health were linked to state based hospital data to identify AF and to Pharmaceutical Benefit Scheme data for medication details. Yearly prevalence and incidence of AF was calculated, followed by calculation of proportions for different medications received. Results A total of 6671 women were eligible for the analysis. About 1827 women from were identified as having AF between 2000-2015. Despite steady incidence, prevalence of AF increased from 2.7% (95%CI=1.6%-3.8%) when women were aged 74-79 years to 24.8% (95%CI=23.2%-26.4%) in 2015 when women were 89-94 years. About 10% of women with AF did not receive any treatment for AF and another 60% did not receive any prophylaxis for thromboembolism within 3 years of AF onset. More than three quarters of women with AF received a combination of medications. Rate control with Vitamin K Inhibitors and Rate control with Platelet Aggregation Inhibitors were the most common combinations. Conclusions Older women have high prevalence of AF. These women are undertreated for the prevention of the most common and disabling complication of AF, stroke. Key messages Prevalence of AF is increasing and women receive inadequate treatment rendering them at risk of serious complications like stroke. This results in reduced quality of life for patients as well as burdens the health care system.