JOURNAL ARTICLE

Protective role of chronic statin therapy in reducing myocardial damage during percutaneous coronary intervention

Carla Auguadro, Mariella Manfredi, Filippo Scalise, Andrea Mortara, Giuseppe Specchia
Journal of Cardiovascular Medicine 2006, 7 (6): 416-21
16721204

OBJECTIVE: Percutaneous coronary intervention (PCI) is frequently associated with troponin I (TnI) elevation. Experimental studies suggest that statins may reduce ischaemia-reperfusion myocardial injury. The study objective was to verify whether chronic treatment with statins might reduce the occurrence and the extent of periprocedural myocardial damage in patients undergoing PCI.

METHODS: Five hundred and fifty-two consecutive patients undergoing PCI were included: 279 were not on statins before PCI, 273 were on statins. TnI levels >or= 0.3 ng/ml were considered indicative of myocardial injury.

RESULTS: Statin-treated patients had a higher prevalence of hyperlipidaemia, previous myocardial infarction, and revascularization procedures. Coronary angiography also documented a higher prevalence of multivessel disease. No difference between the two groups was observed regarding the PCI-treated vessel, type of lesions, use of stents and of anti-IIb/IIIa inhibitors. Patients on statins showed the lowest incidence of TnI >or= 0.3 ng/ml (29 vs. 48%, P = 0.00001) and of creatine kinase-MB elevation (7 vs. 12%, P = 0.04). The mean peak TnI levels were significantly lower in patients on statins (1.07 +/- 3.8 vs. 2.73 +/- 12.3, P = 0.00006). Multivariate analysis identified preprocedural statin therapy as the only independent negative predictor of postprocedural abnormal TnI levels (odds ratio = 0.52; 95% confidence intervals 0.34-0.79; P = 0.003).

CONCLUSIONS: This study shows that chronic therapy with statins reduces the incidence of periprocedural myocardial damage after PCI. The beneficial effect of statins was independent of either the most important clinical and angiographic characteristics or the use of other cardiovascular drugs including beta-blockers. These data support the specific cardioprotective role of statins.

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