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Pure ventricular septal myocardial infarction in a young man with coronary artery ectasia

Shigemasa Tani1, Ikuyoshi Watanabe, Ken Nagao

  • 1Department of Cardiology, Nihon University Surugadai Hospital, Tokyo, Japan.

International Heart Journal
|February 16, 2006
PubMed

Insights

A 30-year-old man experienced myocardial infarction due to coronary artery spasm, specifically in the interventricular septum. This case highlights coronary artery spasm as a cause of heart attack, even without significant blockages.

Area of Science:

  • Cardiology
  • Vascular Medicine
  • Diagnostic Imaging

Background:

  • Myocardial infarction (MI) typically results from obstructive coronary artery disease.
  • Coronary artery spasm is an underrecognized cause of MI, particularly in younger individuals.

Observation:

  • A 30-year-old male presented with an interventricular septum myocardial infarction.
  • Coronary angiography revealed ectasia but no obstructive lesions in the right and left coronary arteries.
  • Acetylcholine provocation test induced spasm in the left anterior descending artery's septal branch.

Findings:

  • Single photon emission computed tomography (SPECT) myocardial perfusion imaging demonstrated reduced thallium-201 uptake in the interventricular septum.
  • The findings confirm coronary artery spasm as the etiology of the myocardial infarction.

Implications:

  • This case underscores the importance of considering coronary artery spasm in the differential diagnosis of MI, especially in the absence of significant coronary stenosis.
  • Early diagnosis and management of coronary artery spasm can prevent recurrent ischemic events.
  • Further research into the mechanisms and long-term outcomes of vasospastic MI is warranted.

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