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Published on: March 27, 2018

Risk factors for late stroke after coronary artery bypass grafting

Thomas Schachner1, Anne Zimmer, Georg Nagele

  • 1Department of Cardiac Surgery, Insbruck Medical University, Austria. Thomas.Schachner@uibk.ac.at

The Journal of Thoracic and Cardiovascular Surgery
|August 4, 2005
PubMed

Insights

Postoperative stroke after coronary artery bypass grafting is linked to older age, unstable angina, COPD, carotid artery disease, and aortic atherosclerosis. A history of neurological events is a key predictor of stroke risk.

Area of Science:

  • Cardiovascular Surgery
  • Neurology
  • Vascular Surgery

Background:

  • Postoperative stroke is a serious complication following coronary artery bypass grafting (CABG).
  • Long-term stroke occurrence significantly impacts patients' quality of life after CABG.
  • Identifying risk factors for late stroke is crucial for improving patient outcomes.

Purpose of the Study:

  • To determine factors associated with new strokes during long-term follow-up after CABG.
  • To identify predictors of late postoperative stroke in patients undergoing CABG.

Main Methods:

  • Retrospective analysis of 387 patients undergoing CABG with intraoperative epiaortic ultrasonography.
  • Median follow-up of 52 months to assess stroke occurrence.
  • Assessment of ascending aortic wall thickness and patient comorbidities.

Main Results:

  • Stroke occurred in 7% of patients within the follow-up period.
  • Increased stroke risk was associated with age ≥70 years, unstable angina, COPD, carotid artery disease, prior neurologic events, and aortic wall thickness ≥4 mm.
  • History of neurologic events was identified as an independent risk factor for stroke.

Conclusions:

  • Ascending aortic atherosclerosis, older age, unstable angina, COPD, and carotid artery disease are risk factors for late stroke post-CABG.
  • A preoperative history of neurologic events holds significant predictive value for late stroke.
  • Risk stratification and targeted interventions can potentially mitigate stroke risk in high-risk CABG patients.
Abstract

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