ST segment elevations: always a marker of acute myocardial infarction?

Area of Science:

• Cardiology
• Emergency Medicine
• Diagnostic Imaging

Background:

• Chest pain is a common emergency department presentation, often requiring differentiation between acute myocardial infarction and other conditions.
• Electrocardiogram (ECG) interpretation is crucial but challenging, as ST-segment and T-wave changes, early signs of ischemia, lack specificity.
• ST-segment deviation can occur in various cardiac and non-cardiac conditions, complicating the diagnosis of ST-segment elevation myocardial infarction (STEMI).

Purpose of the Study:

• To review and outline the primary conditions that can mimic ST-segment elevation myocardial infarction (STEMI).
• To assist clinicians in differentiating true STEMI from conditions with similar ECG presentations.

Main Methods:

• Literature review of conditions presenting with ST-segment deviation.
• Analysis of diagnostic tools including anamnesis, cardiac biomarkers, echocardiography, and coronary computed tomography.
• Focus on ECG findings and their differential diagnostic implications.

Main Results:

• ST-segment deviation on ECG has high sensitivity but low specificity for myocardial infarction.
• Numerous cardiac and non-cardiac conditions can present with ECG abnormalities similar to STEMI.
• Comprehensive evaluation integrating clinical data, risk factors, and diagnostic tests is essential.

Conclusions:

• Accurate diagnosis of acute myocardial infarction requires careful consideration of clinical context beyond isolated ECG findings.
• Understanding conditions that mimic STEMI is vital for appropriate patient management and avoiding diagnostic errors.
• A multidisciplinary approach incorporating various diagnostic modalities improves diagnostic accuracy in chest pain evaluation.