ECGs in Critical Care Cardiology: Do Not Miss That Myocardial Infarction
Kuang-Yuh Chyu1, Prediman K Shah1
1Smidt Heart Institute and Department of Cardiology, Cedars Sinai Medical Center, Los Angeles, California, USA.
JACC. Case Reports
|November 21, 2022
Insights
Certain acute myocardial infarctions without ST-segment elevation require immediate treatment as ST-elevation myocardial infarctions. Early coronary angiography and revascularization are crucial for these critical cardiac events.
Area of Science:
- Cardiology
- Emergency Medicine
- Clinical Diagnosis
Background:
- ST-segment elevation myocardial infarction (STEMI) is a time-sensitive emergency.
- Non-ST-segment elevation myocardial infarction (NSTEMI) typically has different management pathways.
- Accurate and timely diagnosis is critical for optimal patient outcomes.
Observation:
- Presents clinical cases of acute myocardial infarction (AMI) lacking ST-segment elevation on electrocardiogram.
- These cases mimic STEMI in clinical presentation and urgency.
- Standard diagnostic criteria may not immediately identify the need for STEMI protocols.
Findings:
- Patients presenting with specific clinical features of AMI, despite normal ECGs, require STEMI management.
- Early diagnostic coronary angiography is indicated in these cases.
- Prompt revascularization strategies are essential for improving myocardial salvage.
Implications:
- Clinicians must consider STEMI treatment for select NSTEMI presentations based on clinical suspicion.
- This approach may prevent delays in reperfusion therapy for high-risk patients.
- Revised diagnostic considerations for AMI can improve patient survival and reduce long-term cardiac damage.
Abstract:
This paper provides clinical cases of acute myocardial infarction that do not show ST-segment elevation on 12-lead electrocardiogram, but should be clinically treated as ST-segment elevation myocardial infarction with early diagnostic coronary angiogram followed by appropriate strategy of revascularization. (Level of Difficulty: Beginner.).
Keywords:
AMI, acute myocardial infarctionECGECG, electrocardiogramER, emergency roomLAD, left anterior descending arteryLBBB, left bundle branch blockLMCA, left main coronary arteryNSTEMI, non–ST-segment elevation myocardial infarctionSTD, ST-segment depressionSTE, ST-segment elevationSTEMI, ST-segment elevation myocardial infarctioncritical cardiac caremyocardial infarction
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