Clinical Characteristics, Treatments, and Outcomes of MI Patients Presenting With Normal ECG

Study Overview
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Brief Summary
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the investigators aimed to analyzed data for hospitalized MI patients with normal ECG.

Detailed Description
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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.

Official Title
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Clinical Characteristics, Treatments, and Outcomes of MI Patients Presenting With Normal ECG

Conditions
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Non-ST Elevated Myocardial Infarction, Electrocardiography

Participation Criteria
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Eligibility Criteria
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Inclusion Criteria:all patients hospitalized with a principal diagnosis of non-ST-segment elevation infarction (NSTEMI) according to the current ACC/AHA guidelines. exclusion criteria: end-stage organic disease, thrombotic hematological disorders, and poor echogenicity

Ages Eligible for Study
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Minimum Age: 20 Years
Maximum Age: 100 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| NSTEMI Patients presenting with normal ECG<br>NSTEMI Patients presenting with normal ECG | |
| NSTEMI Patients presenting with isolated T wave inversion<br>NSTEMI Patients presenting with isolated T wave inversion | |
| NSTEMI Patients presenting with transient ST-segment elevation<br>NSTEMI Patients presenting with transient ST-segment elevation | |
| NSTEMI Patients presenting with resting U wave inversion<br>NSTEMI Patients presenting with resting U wave inversion | |
| NSTEMI Patients presenting with low QRS voltage<br>NSTEMI Patients presenting with low QRS voltage | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| MACE within 2 weeks | Major Adverse Cardiovascular Events within2 weeks | within 2 weeks | 
| MACE within 1 year | Major Adverse Cardiovascular Events in-hospital within 1 year | within 1 year | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Clinical Characteristics, Treatments, Outcomes, normal ECG