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Lipid-Lowering Treatment Patterns and Risk of Subsequent Cardiovascular Outcomes in Patients With Recent Coronary
Casey Gazda1, Pallavi B Rane2, Sasikiran Nunna3
1From the Division of Cardiology, University of North Carolina School of Medicine, Chapel Hill, NC.
Insights
Lipid-lowering therapy use increased post-revascularization, but high-intensity statins were underused. Many patients still had high LDL-C levels, indicating a need for better lipid management to prevent cardiovascular events.
Area of Science:
- Cardiology
- Pharmacology
- Public Health
Background:
- Lipid-lowering therapy (LLT) significantly reduces cardiovascular events (CVE) in patients with coronary artery disease.
- Understanding LLT, LDL-C levels, and recurrent CVE after coronary revascularization is crucial for patient outcomes.
Purpose of the Study:
- To investigate the utilization of lipid-lowering therapy (LLT) and low-density lipoprotein cholesterol (LDL-C) levels in patients following coronary revascularization.
- To assess the rates of recurrent cardiovascular events (CVE) in relation to LLT and LDL-C control post-revascularization.
Main Methods:
- Retrospective analysis of deidentified claims data from 2014-2019, including IQVIA PharMetrics Plus®, longitudinal prescription claims, and Prognos LDL-C database.
- Identification of adult patients who underwent coronary revascularization, with analysis of LLT utilization, statin intensity, and LDL-C levels pre- and post-procedure.
Main Results:
- LLT utilization increased from 46.0% pre-revascularization to 92.7% post-revascularization; however, only 56.4% received high-intensity statins.
- Mean LDL-C decreased from 108 mg/dL pre- to 82 mg/dL post-revascularization, but 55.7%-62.1% of patients remained above 70 mg/dL.
- Cardiovascular event rates at 12 months post-revascularization were 5.2/100 patient-years for MI, 2.0 for stroke, and 6.6 for unstable angina.
Conclusions:
- Despite increased LLT use, high-intensity statin underutilization and persistent high LDL-C levels (>70 mg/dL) in over half of patients were observed post-revascularization.
- Systematic interventions are necessary to optimize lipid control and reduce recurrent cardiovascular events after coronary revascularization.
Background:
Lipid-lowering reduces cardiovascular events (CVEs) in patients with coronary artery disease. We sought to understand lipid-lowering therapy (LLT), low-density lipoprotein cholesterol (LDL-C) levels, and CVEs after coronary revascularization (CR).
Methods:
We identified adults who underwent CR from 2014 to 2019 in linked datasets (IQVIA PharMetrics Plus health plan claims, IQVIA longitudinal prescription claims, and Prognos LDL-C database) using established methodology for extraction of deidentified claims data.
Results:
A total of 184,271 patients were identified, 73,619 (40.0%) of whom were hospitalized for myocardial infarction (MI) in the 30 days before the index revascularization. Utilization of LLT increased from 46.0% at 3 months prerevascularization to 92.7% 12 months postrevascularization. Only 56.4% of patients were prescribed high-intensity statins. In a subset of patients with LDL-C values (n = 5496), the mean (SD) LDL-C decreased from 108 (41) mg/dL at 6 months prerevascularization to 82 (33) mg/dL at 12 months postrevascularization ( P < 0.0001). At 12 months after revascularization, LDL-C was ≥70 mg/dL in 55.7% of patients with prior MI and 62.1% of patients without recent MI. CVEs rates (per 100 patient-years) at 12 months postrevascularization were 5.2 (95% confidence interval [CI], 5.1-5.3) for MI, 2.0 (95% CI, 1.9-2.0) for stroke, and 6.6 (95% CI, 6.5-6.7) for unstable angina.
Conclusions:
Although LLT utilization increased after revascularization, high-intensity statins were underutilized. LDL-C levels remained above 70 mg/dL in more than half of the patients. Systematic efforts are needed after CR to improve lipid control and prevent recurrent CV events.
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