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  • Title: Incidence of periprocedural myocardial infarction following stent implantation: comparison between first- and second-generation drug-eluting stents.
    Author: Tandjung K, Basalus MW, Muurman E, Louwerenburg HW, van Houwelingen KG, Stoel MG, de Man FH, Jansen H, Huisman J, Linssen GC, Droste HT, Nienhuis MB, von Birgelen C.
    Journal: Catheter Cardiovasc Interv; 2012 Oct 01; 80(4):524-30. PubMed ID: 22109857.
    Abstract:
    BACKGROUND: First- and second-generation drug-eluting stents (DES) differ in coating materials, which may influence the incidence of periprocedural myocardial infarction (PMI). OBJECTIVE: To compare the incidence of PMI between first- and second-generation DES, using the current Academic Research Consortium (ARC) definition of PMI. METHODS: We assessed 800 patients treated with first- (Taxus Liberté or Endeavor) or second-generation DES (Xience V or Resolute). Each DES group consisted of 200 consecutive patients, who were treated during the transition from first- to second-generation DES. Routine peri-interventional assessment of cardiac biomarkers was performed to compare the incidence of PMI between DES groups according to the updated definition by the ARC: 2x upper reference limit of creatine kinase (CK), confirmed by CK-MB elevation. RESULTS: In 800 patients, a total of 1,522 DES (363 Taxus; 385 Endeavor; 382 Xience V; 392 Resolute) were implanted to treat 1,232 lesions. Patient characteristics did not differ between groups. In patients receiving second-generation DES, more multivessel percutaneous coronary interventions were performed (P = 0.01). The overall incidence of PMI was 4.75%. Between first- and second-generation DES, there was no significant difference in PMI (5.5% vs. 4.0%; P = 0.29). In a multivariate analysis, only the total number of stents implanted (P < 0.001) and presentation with acute coronary syndrome (P = 0.02) were independent predictors of PMI. CONCLUSION: Using the revised ARC definition, we found no significant difference in PMI between first- and second-generation DES. Overall, PMI occurred in 4.75%, which is 58% lower than with use of the historical PMI definition.
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