Is It Early Repolarization or Inferior ST-Segment Elevation Myocardial Infarction?
When encountering new ST-segment elevations in the setting of non-classic or evolving chest pain, remember that clinical context and risk stratification are key to differentiating early repolarization from NSTEMI/STEMI. Do not assume STEMI based on ECG morphology alone; consider serial troponins and repeat ECGs if initial findings remain equivocal. Always maintain a high index of suspicion for acute ischemia until proven otherwise.
This case report highlights the diagnostic challenge of differentiating benign early repolarization patterns from acute inferior ST-segment elevation myocardial infarction in an ED setting, using a patient presenting with evolving chest pain. The clinical picture alone is often insufficient to distinguish between these two entities, as both can present with significant ST-segment changes on initial ECG interpretation. The authors detail the workup for this 64-year-old woman, emphasizing that careful correlation of the ECG findings with the patient's clinical course and risk factors is paramount. This underscores the need for a systematic approach when interpreting ST-elevation in the context of chest pain, rather than relying solely on pattern recognition.