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Persistent precordial "hyperacute" T-waves signify proximal left anterior descending artery occlusion

N J Verouden1, K T Koch, R J Peters

  • 1Department of Cardiology, Academic Medical Center, Amsterdam, The Netherlands.

Heart (British Cardiac Society)
|July 22, 2009
PubMed

Insights

A specific electrocardiogram (ECG) pattern of ST-segment depression without ST-elevation can indicate proximal left anterior descending (LAD) artery occlusion. Early recognition of this ECG finding is crucial for timely reperfusion therapy.

Area of Science:

  • Cardiology
  • Diagnostic Electrocardiography

Background:

  • Acute myocardial infarction often presents with ST-segment elevation on electrocardiograms (ECGs).
  • However, certain occlusions, like those in the proximal left anterior descending (LAD) artery, may present with a distinct ECG pattern lacking ST-segment elevation.

Purpose of the Study:

  • To describe a specific, non-ST-elevation ECG pattern associated with acute proximal LAD artery occlusion.
  • To highlight the clinical characteristics of patients presenting with this ECG pattern.

Main Methods:

  • A single-center observational study.
  • Analysis of ECGs from patients with acute anterior wall myocardial infarction undergoing primary percutaneous coronary intervention (PCI).
  • Identification of a distinct ECG pattern characterized by ST-segment depression at the J-point, upsloping ST-segments, and tall, symmetrical T-waves in precordial leads.

Main Results:

  • 35 patients (2%) exhibited the distinct ECG pattern among 1890 undergoing LAD PCI.
  • This pattern involved ST-segment depression at the J-point (≥1 mm), upsloping ST-segments, and tall, symmetrical T-waves in precordial leads.
  • Patients with this pattern were younger, more frequently male, and had higher rates of hypercholesterolemia compared to those with ST-elevation anterior MI.

Conclusions:

  • The identified ECG pattern signifies acute proximal LAD artery occlusion.
  • Prompt recognition by cardiologists and emergency physicians is essential for immediate reperfusion therapy.
  • This distinct ECG finding aids in the triage of patients with acute coronary syndromes.
Abstract

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