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Differential Effects of Lipid-lowering Drugs in Modulating Morphology of Cholesterol Particles
Published on: November 10, 2017
Frequency of high-risk patients not receiving high-potency statin (from a large managed care database)
Fatima Rodriguez1, Temitope Olufade2, Kim Heithoff2
1Division of Cardiovascular Medicine, Stanford Hospital and Clinics, Stanford, California.
Insights
High-risk patients show improved low-density lipoprotein cholesterol (LDL-C) goal attainment, but most still exceed the <70 mg/dl target. Increased use of high-potency statins (HPS) in atherosclerotic cardiovascular disease (ASCVD) patients is noted, yet remains suboptimal.
Area of Science:
- Cardiology
- Public Health
- Pharmacology
Background:
- Current guidelines recommend high-potency statins (HPS) for atherosclerotic cardiovascular disease (ASCVD) patients.
- Previous guidelines targeted low-density lipoprotein cholesterol (LDL-C) levels below 70 mg/dl.
- Trends in LDL-C goal attainment and HPS use among high-risk patients require examination.
Purpose of the Study:
- To analyze trends in LDL-C goal attainment in high-risk patients.
- To assess the utilization of HPS in ASCVD patients.
- To evaluate adherence to guideline-recommended lipid-lowering therapy (LLT).
Main Methods:
- Retrospective analysis of a large managed-care database (2004-2012).
- Identification of ASCVD patients using ICD-9 codes.
- Stratification of patients based on LLT and HPS use.
Main Results:
- Proportion of high-risk patients on LLT increased from 61.4% to 67.9%.
- Mean LDL-C in treated patients decreased from 103.7 to 90.8 mg/dl.
- HPS use rose from 13% to 26%, while 75% of patients did not meet the LDL-C <70 mg/dl target.
Conclusions:
- Despite improvements, a significant gap exists in achieving LDL-C goals (<70 mg/dl) for high-risk patients.
- Underutilization of HPS in ASCVD patients indicates a need for better guideline implementation.
- Renewed efforts are necessary to optimize LLT and improve cardiovascular outcomes.
Abstract:
We examined trends in low-density lipoprotein cholesterol (LDL-C) goal attainment in high-risk patients and use of high-potency statins (HPS) in a large, managed-care database from 2004 to 2012. The 2013 American Heart Association/American College of Cardiology prevention guidelines recommend that subjects with atherosclerotic cardiovascular disease (ASCVD) should be prescribed HPS therapy, irrespective of LDL-C levels. Previous guidelines recommend an LDL-C target <70 mg/dl. Patients diagnosed with ASCVD based on International Classification of Diseases, Ninth Revision codes with ≥1 LDL-C test from January 2004 to December 2012 were identified in the Optum Insight database. Patients were identified as treated if they received lipid-lowering therapy (LLT) within 90 days of the LDL-C measurement and untreated if they did not receive LLT treatment. LLT treated patients were stratified into HPS users or non-HPS LLT users. There were 45,101 eligible patients in 2004 and 40,846 in 2012. The proportion of high-risk patients who were treated with LLT increased from 61.4% (2004) to 70.5% (2008) then remained relatively constant until 2012 (67.9%). Mean LDL-C values in treated patients decreased from 103.7 ± 32.1 (2004) to 90.8 ± 31.4 mg/dl (2012). The proportion of patients treated with HPS increased from 13% in 2004 to 26% in 2012. Although the proportion of treated high-risk patients who achieve LDL-C <70 mg/dl levels has increased sharply from 2004, approximately 3 of 4 patients still did not meet this target. Only 1/4 of ASCVD patients are on HPS. In conclusion, our findings highlight the need for renewed efforts to support guideline-based LDL-C treatment for high-risk patients.
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