Resumo

HIRSCHSON PRADO, Alfredo et al. Prognostic Valué of the Leuko-glycemic Index in Acute Myocardial Infarction: Results from the SCAR Multicenter Registry. Rev. argent. cardiol. [online]. 2014, vol.82, n.6, pp.500-505. ISSN 1850-3748.

Background: Leukocytosis and hyperglycemia correlate with worse short-term prognosis in patients with acute coronary syndrome, but their new relationship, called leuko-glycemic index (LGI), has been scarcely evaluated. Objectives: The aim of this study was to analyze the prognostic value of LGI in patients with ST-segment-elevation acute myocardial infarction (STEMI) and its added value to classical risk scores. Methods: Patients diagnosed with STEMI from the SCAR (Acute Coronary Syndromes in Argentina) Multicenter Registry were analyzed. The final endpoint was death or in-hospital Killip-Kimball 3-4 (KK 3-4). The LGI was analyzed as a continu-ous variable and in quartiles according to 25, 50 and 75 percentile values. Results: The study evaluated 405 out of 476 patients with final STEMI diagnosis. Presence of the primary endpoint significantly increased per LGI quartile: 0%, 7.60%, 9.30% and 30.60% (p < 0.0001). The LGI area under the ROC curve for the composite endpoint was 0.77 [(95% CI 0.71-0.88); p = 0.0001]; the best prognostic cut-off value was 1000. Presence of death or KK 3-4 was 0% and 13% in STEMI patients with LGI below or above 1000, respectively In a multivariate logistic regression model, LGI was independently associated with death or KK 3-4. The area under the ROC curve of the TIMI risk score for STEMI was 0.58. The addition of LGI increased its discriminatory capacity to 0.66 (p = 0.001). Conclusions: The LGI was an independent predictor of adverse outcome in STEMI patients (death or KK 3-4), adding prognostic value to the TIMI risk score.

Palavras-chave : Myocardial Infarction; Glucose Plasma; Leukocytes.

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