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MYOCARDIAL INFARCTION FOLLOWING CAROTID ENDARTERECTOMY.

Pedro A. Rubio1, Gene A. Guinn

  • 1The Cora and Webb Mading Department of Surgery, Baylor College of Medicine, and Veterans Administration Hospital, Houston, Texas.

Cardiovascular Diseases
|January 1, 1975
PubMed
Summary
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Patients with coronary artery disease undergoing carotid endarterectomy face a higher risk of myocardial infarction. Prior or concurrent coronary artery bypass surgery may reduce this risk, improving outcomes for these high-risk patients.

Area of Science:

  • Cardiovascular Surgery
  • Vascular Surgery
  • Cardiology

Background:

  • Myocardial infarction is a significant cause of mortality after surgery for cerebrovascular insufficiency.
  • Coronary artery disease is prevalent in patients undergoing carotid endarterectomy, increasing perioperative risks.
  • Previous studies indicate a link between coronary artery disease and operative mortality in cerebrovascular surgery.

Purpose of the Study:

  • To evaluate the incidence of myocardial infarction in patients undergoing carotid endarterectomy with diagnosed coronary artery disease.
  • To assess the impact of prior coronary artery bypass surgery on postoperative myocardial infarction rates in this patient group.
  • To inform clinical decisions regarding concurrent or prior coronary revascularization in patients with combined carotid and coronary artery disease.

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Main Methods:

  • Retrospective review of consecutive male patients undergoing carotid endarterectomy.
  • Clinical diagnosis of coronary artery disease was established preoperatively.
  • Comparison of postoperative myocardial infarction rates between patients with and without coronary artery disease, and those with prior coronary artery bypass.

Main Results:

  • A significant proportion (29.6%) of patients undergoing carotid endarterectomy had diagnosed coronary artery disease.
  • Six of 37 patients (16.2%) with coronary artery disease developed postoperative myocardial infarction, versus none of 88 without.
  • No postoperative myocardial infarction occurred in 20 patients who had previously undergone coronary artery bypass surgery.

Conclusions:

  • Patients with concomitant coronary and carotid artery disease are at high risk for perioperative myocardial infarction during carotid endarterectomy.
  • Prior or concurrent coronary artery bypass surgery should be strongly considered for patients with coronary artery disease undergoing carotid endarterectomy.
  • Coronary revascularization may mitigate the risk of myocardial infarction, improving surgical outcomes in this vulnerable population.