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2017 ; 11
(1
): 204-214
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Investigating the prevalence, predictors, and prognosis of suboptimal statin use
early after a non-ST elevation acute coronary syndrome
#MMPMID28391887
Turner RM
; Yin P
; Hanson A
; FitzGerald R
; Morris AP
; Stables RH
; Jorgensen AL
; Pirmohamed M
J Clin Lipidol
2017[Jan]; 11
(1
): 204-214
PMID28391887
show ga
BACKGROUND: High-potency statin therapy is recommended in the secondary
prevention of cardiovascular disease but discontinuation, dose reduction, statin
switching, and/or nonadherence occur in practice. OBJECTIVES: To determine the
prevalence and predictors of deviation from high-potency statin use early after a
non-ST elevation acute coronary syndrome (NSTE-ACS) and its association with
subsequent major adverse cardiovascular events (MACE) and all-cause mortality
(ACM). METHODS: A total of 1005 patients from a UK-based prospective NSTE-ACS
cohort study discharged on high-potency statin therapy (atorvastatin 80 mg,
rosuvastatin 20 mg, or 40 mg daily) were included. At 1 month, patients were
divided into constant high-potency statin users, and suboptimal users
incorporating statin discontinuation, dose reduction, switching statin to a lower
equivalent potency, and/or statin nonadherence. Follow-up was a median of
16 months. RESULTS: There were 156 suboptimal (?15.5%) and 849 constant statin
users. Factors associated in multivariable analysis with suboptimal statin
occurrence included female sex (odds ratio 1.75, 95% confidence interval [CI]
1.14-2.68) and muscular symptoms (odds ratio 4.28, 95% CI 1.30-14.08). Suboptimal
statin use was associated with increased adjusted risks of time to MACE (hazard
ratio 2.10, 95% CI 1.25-3.53, P = .005) and ACM (hazard ratio 2.46, 95% CI
1.38-4.39, P = .003). Subgroup analysis confirmed that the increased MACE/ACM
risks were principally attributable to statin discontinuation or nonadherence.
CONCLUSIONS: Conversion to suboptimal statin use is common early after NSTE-ACS
and is partly related to muscular symptoms. Statin discontinuation or
non-adherence carries an adverse prognosis. Interventions that preserve and
enhance statin utilization could improve post NSTE-ACS outcomes.