Acute chest pain with ST-segment elevation in lead V1-V3: when you hear hoofbeats, also look for zebras

Patrizio Pascale1, Anna Giulia Pavon2, Jan Bogaert3

  • 1Cardiology Division, Heart and Vessels Department, Lausanne University Hospital, BH 10-982, Rue de Bugnon 46, 1011, Lausanne, Switzerland. Patrizio.Pascale@chuv.ch.

Insights

ST-segment elevation (STE) in anterior leads usually indicates anterior myocardial infarction. However, this pattern can rarely signify isolated right ventricular infarction, a diagnostic pitfall discussed in this study.

Area of Science:

  • Cardiology
  • Electrocardiography
  • Diagnostic Imaging

Background:

  • ST-segment elevation (STE) in anterior precordial leads (V1-V3) is a primary indicator of anterior myocardial infarction.
  • The right ventricular free wall is closely approximated by these anterior leads.
  • Diagnostic errors can occur when STE in these leads is attributed solely to anterior myocardial infarction.

Observation:

  • This study presents a series of 4 patients with ST-segment elevation in anterior leads.
  • These patients exhibited electrocardiographic patterns mimicking anterior myocardial infarction.
  • The underlying cause in these cases was isolated right ventricular infarction.

Findings:

  • Anterior precordial STE can be an uncommon manifestation of isolated right ventricular infarction.
  • Leads V1-V3's proximity to the right ventricle can lead to this diagnostic confusion.
  • Recognizing this pattern is crucial for accurate diagnosis and timely treatment.

Implications:

  • Clinicians must consider right ventricular infarction in the differential diagnosis of anterior STE.
  • Differentiating between anterior and right ventricular infarction is critical for appropriate therapeutic strategies.
  • Awareness of this diagnostic pitfall can improve patient outcomes by preventing delayed or incorrect management.

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