JOURNAL ARTICLE

Lack of ST-segment depression normalization after PCI is a predictor of 5-year mortality in patients with ST-elevation myocardial infarction

Marcin Kozuch, Slawomir Dobrzycki, Konrad Nowak, Przemyslaw Prokopczuk, Pawel Kralisz, Hanna Bachorzewska-Gajewska, Karol Kaminski, Anna Kozieradzka, Janusz Korecki, Boguslaw Poniatowski, Wlodzimierz Jerzy Musial
Circulation Journal: Official Journal of the Japanese Circulation Society 2007, 71 (12): 1851-6
18037735

BACKGROUND: The significance of dynamic changes in a depressed ST-segment in the reciprocal changes after percutaneous coronary intervention (PCI) of patients with ST-elevation myocardial infarction (STEMI) is unknown, so the aim of this study was to evaluate the significance of reciprocal ST-segment depression normalization (STN) on long-term mortality in patients with STEMI treated with primary PCI.

METHODS AND RESULTS: Data for 247 consecutive patients with STEMI were analyzed; 84 patients were excluded because of exclusion or incomplete inclusion criteria, so finally, 163 patients successfully treated with primary PCI were included. The study group was divided into 3 subgroups according to percentage of STN: poor STN (<30%), partial STN (30-70%), complete STN (>70%). Complete STN occurred in 63%, partial in 24% and poor in 13% of patients. STN correlated with late mortality (15% vs 28% vs 38% respectively, p=0.012). Patients who died during the follow-up period had a lower mean percentage reduction of initial ST-segment depression after PCI (50% vs 75%, p=0.001). Percentage reduction of initial ST-segment depression after PCI was a significant and independent risk factor of long-term mortality (odds ratio 1.01; 95% confidence interval: 1.00-1.02; p=0.02).

CONCLUSIONS: These data revealed the use of reciprocal changes normalization as a novel tool for assessment of long-term risk of death in patients after successful primary PCI for STEMI.

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