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Hyperdominant Left Anterior Descending Artery: ARare Coronary Artery Anomaly

Hamid Sharif Khan1, Imran Iftikhar1, Azhar Mahmood Kayani1

  • 1Department of Cardiology, Rawalpindi Institute of Cardiology, Rawalpindi.

Journal of the College of Physicians and Surgeons--Pakistan : JCPSP
|July 5, 2016
PubMed

Insights

A rare coronary artery anomaly, the posterior descending artery originating from the left anterior descending artery, was identified in a patient with myocardial infarction. This anatomical variation requires careful consideration in diagnosing and managing cardiac conditions.

Area of Science:

  • Cardiology
  • Anatomical Variations
  • Interventional Cardiology

Background:

  • The posterior descending artery (PDA) typically arises from the right coronary artery (RCA) or left circumflex artery (LCx).
  • Anomalous origin of the PDA from the left anterior descending artery (LAD) is an uncommon finding.

Observation:

  • A 66-year-old male presented with symptoms consistent with non-ST-elevation myocardial infarction.
  • Coronary angiography revealed the PDA arising as a continuation of the LAD beyond the crux.
  • A rudimentary right coronary artery was also noted.

Findings:

  • The patient was diagnosed with non-ST-elevation myocardial infarction.
  • Fractional flow reserve confirmed subcritical stenosis in the proximal LAD.
  • The anomalous PDA origin was identified as a key anatomical feature.

Implications:

  • This case highlights the importance of recognizing rare coronary artery anomalies during angiography.
  • Understanding such variations is crucial for accurate diagnosis and treatment planning in myocardial infarction.
  • Management strategies may need to be adapted based on individual coronary anatomy.

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