OBJECTIVE To assess whether the use of inverted lead aVR (-aVR) would improve the classification of acute inferior or lateral myocardial infarction presenting with ST elevation. DESIGN Observational study. The presence of >/= 1 mm ST elevation in lead -aVR (derived by manual assessment of ST depression in conventional lead aVR) was determined by a single investigator, blinded to patient outco...

  Background :In addition to diagnosing the acute myocardial infarction (MI), stratifying high-risk patients and proper treatment strategies are important issues in managing patients complaining of chest pain and suspecting MI. Many studies have been conducted to predict the occlusion site by interpreting the ST segment deviations in Electrocardiogram (ECG).Additional posterior and right precor...

Platelet activation is thought to play a key pathogenetic mechanism in acute coronary syndromes. We investigated the mean platelet volume and platelet count in patients with both ST elevation myocardial infarction and non-ST elevation myocardial infarction. Fifty two patients with non-ST elevation myocardial infarction and 56 patients with ST elevation myocardial infarction were enrolled in the...

BACKGROUND Prior investigations of transient myocardial ischaemia have focused on ST depression events. Therefore, the purpose of this analysis was to determine the frequency, characteristics, and clinical significance of transient ST segment elevation in patients with acute coronary syndromes. METHODS A secondary analysis from two prospective studies utilizing 12-lead ST segment monitoring w...

ST-elevation ACS (STE-ACS): patients present with acute chest pain and persistent (>20 minutes) ST-segment elevation. Most of these patients will develop an ST-elevation myocardial infarction (STEMI). Non-ST-elevation ACS (NSTE-ACS): patients present with acute chest pain but without persistent STsegment elevation. The ECG shows persistent or transient ST-segment depression or T-wave inversion,...