this study was conducted to determine whether precordial st segment depression in admission electrocardiogram (ecg) in patients with acute phase inferior myocardial infarction (mi) eligible for thrombolytic therapy and subsequent angiographic evaluation, influences the incidence of left anterior descending artery (lad) disease. 31 consecutively admitted patients were entered in our study. 20 pa...

The purpose of this study was to determine the coronary angiographic correlations (specifically disease of the left anterior descending coronary artery) of reciprocal ST segment depression appearing during inferior acute myocardial infarction. Forty six patients (41 men and five women; mean age 56 years) were allocated into two groups based on the extent of precordial ST segment depression: wid...

This study was undertaken to determine whether the site of ST depression on 12-lead exercise electrocardiography can identify the ischemic site assessed by myocardial Tl-201 emission computed tomography in 409 patients with transient defects. ST depression in some leads was more frequent in those with inferior or lateral ischemia than in those with anterior ischemia. In 214 patients with ST dep...

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...

BACKGROUND Up-sloping ST-segment depression has not been historically considered as representing ischemia as this electrocardiographic change can be seen in normal subjects during exercise stress testing or tachycardia. We aimed to clarify the prevalence and clinical significance of up-sloping ST-segment depression in patients with non-ST-segment elevation myocardial infarction (NSTEMI). METH...

OBJECTIVES To examine the interaction between ST segment depression on the baseline ECG and subsequent in-hospital revascularisation on six month mortality among patients with non-ST elevation acute coronary syndromes. To examine whether ST segment depression influenced clinical decision making and whether there was international variation in the use of cardiac procedures across ST segment depr...

The presence of electrocardiographic ST depression in acute infarction remains controversial and poorly explained. A combined animal and modeling study was performed to evaluate the source of ST changes in acute infarction. In anaesthetized sheep, small infarcts showed uniform ST elevation over the infarction whereas larger infarcts showed marked ST depression over the normal myocardium in addi...

OBJECTIVES We examined the prognostic significance of precordial ST segment depression among patients with an acute inferior myocardial infarction. BACKGROUND Although precordial ST segment depression has been associated with a poor prognosis, this correlation has not been adequately quantified, partly because of small sample sizes and methodologic limitations in previous studies. METHODS W...