Electrocardiography Clinical Trial
Official title:
Clinical Characteristics, Treatments, and Outcomes of MI Patients Presenting With Normal ECG
the investigators aimed to analyzed data for hospitalized MI patients with normal ECG.
The electrocardiogram (ECG) at presentation is a useful tool for risk prediction. Patients with ACS（Acute Coronary Syndromes） and ST-segment depression on ECG have a worse prognosis than patients with a normal ECG. ST-segment depression is not only a qualitative marker, but also a quantitative marker of risk, because the number of leads with ST-segment depression and the magnitude of ST-segment depression (either within a single lead or as sum over all leads) are indicative of the extent of ischaemia and correlate with prognosis.The presence of ST-segment depression >1 mm in >_6 leads in conjunction with ST-segment elevation in aVR and/or V1, particularly if the patient presents with haemodynamic compromise, suggests multivessel ischaemia or severe left main coronary artery stenosis. However,in patients presenting without persistent ST-segment elevation,the clinical features, treatments, and outcomes in patients with normal ECG is still unclear. ;
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