Search for: [Abstract = "Retrospective analysis was based on a database of National Polish Registry of Acute Coronary Syndromes \(PL\-ACS\). It was performed on data from 11 777 patients diagnosed with myocardial infarction without ST elevation, hospitalized from August 1st 2007 until the end of 2009. Patients were divided in 4 groups depending on electrocardiographic changes registered at admission to the hospital due to acute coronary syndrome\: 1. group with ST depression, 2. group with pathological negative T wave, 3. group with other changes in ST\-T distance, 4. group with normal ECG recordings. Parameters evaluated included clinical characteristics, hospitalization course and mortality in the long\-term observation \(3 years\) after NSTEMI. The most common change in the electrocardiographic recordings registered at admission in patients with myocardial infarction without ST elevation is ST depression \(47.72%\). In the short and long\-term observation, the lowest mortality was observed in the group with the pathological negative T waves and the highest mortality was registered in the group with other ST\-T abnormalities."]

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