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Discontinuation of statin therapy - an updated review
Emmanuel Orfanos1,2, Jae Hyun Byun1, Stella S Daskalopoulou1
1Vascular Health Unit, Research Institute of the McGill University Health Centre.
Insights
Statin discontinuation is common and linked to worse cardiovascular outcomes. Addressing patient, clinician, and system factors is crucial for improving statin adherence and reducing cardiovascular risk.
Area of Science:
- Cardiology
- Pharmacology
- Public Health
Background:
- Cardiovascular disease (CVD) is a leading global health concern, with elevated low-density lipoprotein cholesterol (LDL-C) as a key modifiable risk factor.
- Statins are primary treatments for lowering LDL-C and reducing cardiovascular events, mortality, and overall mortality.
- Despite proven benefits, statin discontinuation and poor adherence are prevalent issues affecting treatment efficacy.
Purpose of the Study:
- To synthesize current knowledge on the epidemiology, clinical factors, and outcomes associated with statin discontinuation.
- To highlight the impact of statin non-adherence on cardiovascular risk reduction strategies.
Main Methods:
- This narrative review synthesizes recent literature on statin discontinuation.
- Analysis includes epidemiological data, clinical determinants, and patient outcomes.
Main Results:
- Statin discontinuation rates vary widely (0.8-70.5%), particularly in primary prevention.
- Factors influencing discontinuation include demographics (male sex, non-White ethnicity), lifestyle (smoking), insurance status, and polypharmacy (conflicting data).
- Approximately 40% of patients exhibit suboptimal adherence, and discontinuation correlates with increased cardiovascular events, hospitalizations, and mortality.
Conclusions:
- Statin discontinuation and poor adherence significantly impede effective cardiovascular risk reduction.
- Improving long-term statin adherence requires addressing determinants at patient, clinician, and system levels.
Purpose Of Review:
This narrative review aims to provide an updated synthesis of the recent epidemiology, clinical determinants, and consequences of statin discontinuation.
Recent Findings:
Cardiovascular disease (CVD) remains a leading cause of morbidity and mortality worldwide, with elevated low-density lipoprotein cholesterol (LDL-C) representing a key modifiable risk factor. Statins are first-line lipid-lowering agents that reduce major adverse cardiovascular events, cardiovascular mortality, and all-cause mortality. Despite their efficacy, statin discontinuation and suboptimal adherence remain common. Discontinuation rates within the first-year range widely (0.8-70.5%), with higher rates observed in primary prevention populations. Factors associated with discontinuation include male sex, non-White ethnicity, smoking, and lack of insurance, whereas secondary prevention is consistently associated with better persistence. Interestingly, polypharmacy demonstrated conflicting associations across studies. Overall, approximately 40% of patients fail to achieve optimal adherence. Discontinuation is consistently associated with increased cardiovascular events, hospitalizations, and all-cause mortality.
Summary:
Statin discontinuation and poor adherence remain major barriers to effective cardiovascular risk reduction. Addressing patient-, clinician-, and system-level determinants is essential to improve long-term adherence and clinical outcomes.
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