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Clinical Trial
. 2017 Nov 1;24(11):1125-1131.
doi: 10.5551/jat.38794. Epub 2017 Mar 17.

Impact of Lipoprotein (a) on Long-Term Outcomes in Patients with Coronary Artery Disease Treated with Statin After a First Percutaneous Coronary Intervention

Affiliations
Clinical Trial

Impact of Lipoprotein (a) on Long-Term Outcomes in Patients with Coronary Artery Disease Treated with Statin After a First Percutaneous Coronary Intervention

Satoru Suwa et al. J Atheroscler Thromb. .

Abstract

Aims: Cardiovascular risk persists despite intensive lipid lowering therapy using statins. Serum levels of lipoprotein (a) [Lp(a)] can be a residual cardiovascular risk for adverse events. Aim of the present study was to evaluate the impact of Lp(a) on long-term clinical outcomes in patients treated with statin after percutaneous coronary intervention.

Methods: We prospectively enrolled 3507 consecutive CAD patients who underwent a first percutaneous coronary intervention (PCI) between 1997 and 2011 at our institution. We identified 1768 patients (50.4%) who had treated with statin during PCI. Eligible 1336 patients were stratified to two groups according to Lp(a) levels (median Lp (a) 21.5 mg/dL). The primary outcome was major adverse cardiac events (MACE) including cardiac death and non-fatal acute coronary syndrome.

Results: MACE occurred 144 (10.8%) including 34 (2.5%) cardiac death and 110 (8.7%) non-fatal ACS during median follow-up period of 1920 days. The cumulative rate of MACE was significantly higher in group with high Lp(a) group (log-rank p=0.0460). Multivariate Cox regression analysis showed a significant correlation between Lp (a) levels treated as a natural logarithm-transformed continuous variable and increased MACE (adjusted HR for MACE 1.28, 95%CI 1.04-1.58, p=0.0184)Conclusion: Elevated levels of Lp(a) is significantly associated with long-term adverse clinical outcomes among CAD patients who received statin therapy after PCI.

Keywords: Coronary artery disease; Lipoprotein (a); Percutaneous coronary intervention; Statin.

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Figures

Fig. 1.
Fig. 1.
Study flow chart
Fig. 2.
Fig. 2.
The distribution of Lp(a) levels
Fig. 3.
Fig. 3.
Kaplan-Meier curves for MACE

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