Comparing Prescribing Practices of Statin Therapy in Atherosclerotic Cardiovascular Disease Patients with Varying Levels of Chronic Kidney Disease

Abstract

Lead Author's Financial Disclosures Nothing to disclose. Study Funding None. Background/Synopsis Evidence supporting high-intensity statin therapy in patients with atherosclerotic cardiovascular disease (ASCVD) and advanced chronic kidney disease (CKD), not on dialysis, is not robust. Cardiovascular risk reduction from statin therapy within this population is predominantly derived from post-hoc subgroup analysis of larger trials. This subset of ASCVD patients is often at higher risk for medication-related adverse effects, secondary to reduced renal clearance, polypharmacy, and high prevalence of co-morbidities. This increased risk may result in provider hesitation and under prescribing of high-intensity statin therapy among ASCVD patients. Of the available high-intensity statins atorvastatin does not require renal dose adjustments although rosuvastatin does. On a population level, prescribing of statins among patients with ASCVD and CKD has improved in recent years but remains sub-optimal. Results from this study can provide insight into whether providers are following guideline recommendations and package labeled dosing when prescribing statin therapy in a real-world setting. Objective/Purpose This study aims to evaluate real-world prescribing patterns of statin-therapy among ASCVD patients with non-dialysis dependent Stage 4-5 CKD and Stage 3a and 3b CKD. Methods This study is a retrospective, cross-sectional observational study and has been reviewed by the Colorado Multiple Institutional Review Board as exempt. Patients with a diagnosis of clinical ASCVD, non-dialysis dependent CKD stage 3a-5, and prescribed a statin between 1/1/2020-9/30/2021 were identified. The primary outcome will be prescribing ahigh-intensityy statin among patients with eGFR <30 mL/min compared to patients with eGFR 30-<60 mL/min. Secondary outcomes will include differences in mean LDL-C between the two groups and proportion of patients on FDA approved dosing of rosuvastatin. A chi-square test will be used for qualitative data and a student t-test for quantitative data. Results A total of 6000 patients have been identified and will be evaluated for inclusion into this study. Results are currently in progress. Conclusions Will be presented. Nothing to disclose.