Abstract
ObjectiveTo update the prevalence of atherosclerotic cardiovascular disease (ASCVD) in the United States (US) and re-evaluate lipid-lowering therapies (LLT) utilization and low-density lipoprotein cholesterol (LDL-C) goal attainment among ASCVD patients after proprotein convertase subtilisin/kexin type 9 (PCSK9) inhibitors have become available using data from 2019. MethodsASCVD patients with at least 1 valid LDL-C measurement from the 2019 Truven MarketScan Research Database were included and stratified into hierarchical cardiovascular risk groups. The number of patients in each group was extrapolated to approximate national figures based on national demographic and ASCVD prevalence numbers. Descriptive statistics on demographic and clinical characteristics, treatment status and LDL-C for each hierarchical category were reported. ResultsThe overall prevalence of ASCVD in the US in 2019 was 24.0 million, approximately 10% of the total US population above 21 years old. We found heavy comorbidity burden among ASCVD patients and 31.2% were at very high risk for recurrent events. The majority of ASCVD patients were not at guideline-recommended LDL-C goal. Although there was a significant increase in the use of LLTs (especially of high-intensity statins) in 2019 compared to 2014, overall LLT utilization remained low, with only 3.8% of ASCVD patients on ezetimibe, less than 1% on PCSK9 inhibitors and over 40% on no LLTs. We also found higher utilization of LLTs among patients who were at goal of < 70 or < 55 mg/dL vs. those not at goal. ConclusionDespite an increase in high-intensity statins use since 2014, there was still an underutilization of LLTs in spite of evidence of their efficacy in LDL-C lowering and ability to reduce the risk of coronary heart disease. Increased awareness of guidelines by healthcare providers and urgency to treat ASCVD is needed in order to improve LLT utilization and help more patients reach the LDL-C goal.
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