Resumo

OCAMPO, Luz A et al. Prognostic accuracy of grace and timi scores in patients undergoing percutaneous coronary intervention for non- ST- elevation acute coronary syndrome. Rev. Colomb. Cardiol. [online]. 2013, vol.20, n.3, pp.130-135. ISSN 0120-5633.

Introduction: Patients with acute coronary syndromes are a heterogeneous population that requires treatment adjustments according to the risk. In response to this need, score systems like GRACE and TIMI have been developed, but comparisons between these scores are scarce in the literature and we need to know if they are useful for risk stratification of these patients in the Colombian population. Objective: To compare the prognostic value of GRACE and TIMI scores in a Colombian population of patients with non-ST-elevation acute coronary syndrome undergoing percutaneous revascularization, in order to predict outcomes of mortality, reinfarction, or repeated revascularization at one and six months. Methods: We conducted a cohort study with retrospective data taking, which included patients who met the diagnostic criteria for non-ST-elevation acute coronary syndrome that underwent percutaneous intervention. We evaluated the discriminatory power of GRACE and TIMI scores using ROC curves. Results: We included 202 patients and found that for this population both scores accuracy is low. Discrimination between unstable angina and myocardial infarction with non-ST-segment elevation increases the area under the curve for each one; GRACE score increases its prognostic performance when analyzed in patients with non-ST-segment elevation whereas TIMI does it in patients with unstable angina. Conclusion: The overall accuracy of the TIMI and GRACE scores in the patients studied is not adequate, a fact which can be explained because it is a cohort of patients undergoing early intervention and with contemporary drug therapy for acute coronary syndrome.

Palavras-chave : myocardial infarction; unstable angina; prognosis.

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