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Bidirectional precordial ST changes during angioplasty to right coronary artery

Hirofumi Noike1, Kazuhiro Shimizu, Mao Takahashi

  • 1Cardiovascular Center, Sakura Hospital, Toho Medical Center, Sakura. hfnoike@sakura.med.toho-u.ac.jp

Internal Medicine (Tokyo, Japan)
|January 16, 2010
PubMed

Insights

Electrocardiogram (ECG) changes during angioplasty for acute coronary syndrome can vary. Inferior and right ventricular ischemia present diverse ST deviation patterns, influenced by coronary blood flow.

Area of Science:

  • Cardiology
  • Clinical Medicine
  • Diagnostic Imaging

Background:

  • Acute coronary syndrome (ACS) necessitates timely intervention.
  • Coronary angiography and angioplasty are key diagnostic and therapeutic procedures.
  • Electrocardiogram (ECG) monitoring is crucial during interventions.

Observation:

  • A 53-year-old male presented with ACS, undergoing emergency coronary angiography.
  • Stenosis was identified in the right coronary artery.
  • During angioplasty, varied ST deviations were observed on the ECG.

Findings:

  • The ECG exhibited three distinct ST deviation patterns: inferior ST elevation with precordial ST depression, inferior ST elevation with precordial ST elevation, and inferior ST depression with precordial ST elevation.
  • These patterns reflect inferior ischemia coupled with right ventricular ischemia.
  • The specific ECG manifestation is determined by the degree of blood flow in the right main coronary artery and its branches.

Implications:

  • Recognizing diverse ECG patterns in inferior and right ventricular ischemia is vital for accurate diagnosis.
  • Understanding the relationship between coronary blood flow and ECG changes aids in interventional decision-making.
  • This case highlights the complexity of ischemic patterns and their correlation with coronary anatomy.

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