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Limitations Of Real-World Treatment With Atorvastatin Monotherapy For Lowering Ldl-C In High-Risk Cardiovascular Patients In The Us
Authors
Elizabeth Marrett
Dena R. Ramey
+3 more
Ning Jackie Zhang
Qiaoyi Zhang
Changgeng Zhao
Publication date
1 January 2014
Publisher
'Information Bulletin on Variable Stars (IBVS)'
Abstract
Background: Guidelines endorse statin therapy for lowering low-density lipoprotein cholesterol (LDL-C) to recommended levels, in patients with cardiovascular disease (CVD) risk, if needed, after lifestyle changes. Atorvastatin is a common statin with greater LDL-C lowering efficacy than most other statins; its availability in generic form will likely increase its use. This study assessed attainment of guideline-recommended LDL-C levels in high-risk CVD patients treated with atorvastatin monotherapy. Methods: Analyses of two retrospective US cohorts of patients who received a prescription for atorvastatin monotherapy between January 1, 2008 and December 31, 2010 (index date defined as first prescription date) in the GE Centricity Electronic Medical Record (EMR) (N=10,693) and Humana Medicare (N=16,798) databases. Eligible patients were ≥18 years, diagnosed with coronary heart disease or atherosclerotic vascular disease, with ≥1 LDL-C measurement between 3 months and 1 year postindex date, and continuously enrolled for 1 year prior to and following the index date. Results: Of the eligible patients, 21.8%, 29.6%, 29.9%, and 18.7% (GE Centricity EMR) and 25.4%, 32.9%, 27.8%, and 14.0% (Humana Medicare) received 10, 20, 40, and 80 mg doses of atorvastatin, respectively. The mean ± standard deviation (SD) follow-up LDL-C levels were 2.1±0.8 mmol/L (83±30 mg/dL) and 2.3±0.8 mmol/L (88±31 mg/dL) for the GE Centricity EMR and Humana Medicare cohorts, respectively. Regardless of dose, only 28.3%-34.8% of patients had LDL-C levels\u3c1.8 mmol/L (,70 mg/dL), and 72.0%-78.0% achieved LDL-C\u3c2.6 mmol/L (,100 mg/dL) in both cohorts. As many as 41% and 13% of patients had LDL-C levels ≥0.5 mmol/L (≥20 mg/dL) above LDL-C 1.8 mmol/L (70 mg/dL) and 2.6 mmol/L (100 mg/dL), respectively, in both cohorts; these percentages were generally similar across atorvastatin doses. Conclusion: In this real-world US setting, a large number of high-risk CVD patients did not attain guideline-recommended LDL-C levels with atorvastatin monotherapy. More than 65% of the patients had LDL-C levels\u3e1.8 mmol/L (\u3e70 mg/dL), and of these, 30%-40% had LDL-C levels ≥0.5 mmol/L (≥20 mg/dL) above this, regardless of dose. This suggests that more effective lipid-lowering strategies, such as statin uptitration, switching to a higher efficacy statin, and/or combination therapy, may be required to achieve optimal LDL-C lowering in high-risk patients. © 2014 Marrett et al
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Last time updated on 18/10/2022