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Recurrent myocardial infarction in a young patient with normal coronary arteries

U Sundaram1, S Sharma

  • 1Department of Cardiology, BYL Nair Hospital, Bombay.

The Journal of the Association of Physicians of India
|May 1, 1990
PubMed

Insights

A young patient experienced two myocardial infarctions within six months despite having normal coronary arteries. The cause of these recurrent heart attacks remains unknown, posing a diagnostic challenge.

Area of Science:

  • Cardiology
  • Vascular Medicine
  • Clinical Case Reports

Background:

  • Recurrent myocardial infarction (MI) typically suggests underlying obstructive coronary artery disease.
  • Investigating the etiology of MI in patients with normal coronary arteries is crucial for appropriate management.

Observation:

  • A 33-year-old patient presented with two acute myocardial ischemic episodes, including inferior wall infarction and anterior wall infarction, within six months.
  • Coronary angiography revealed normal coronary arteries, ruling out significant atherosclerotic stenosis.
  • Coronary artery spasm studies using ergonovine during angiography did not provoke vasospasm.

Findings:

  • The patient experienced recurrent myocardial infarction despite angiographically normal coronary arteries.
  • Coronary artery spasm was not induced by ergonovine challenge, suggesting vasospasm is unlikely the primary mechanism.
  • The underlying cause of the repeated ischemic events remains undetermined.

Implications:

  • This case highlights the possibility of myocardial infarction occurring through mechanisms other than epicardial coronary artery stenosis.
  • Further research is needed to elucidate the pathophysiology of infarction in the absence of obstructive coronary disease.
  • Diagnostic and therapeutic strategies for myocardial infarction with non-obstructive coronary arteries (MINOCA) require further investigation.

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