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Related Experiment Videos

Risk factors for developing postprocedural microemboli following carotid interventions.

Maureen M Tedesco1, Sheila M Coogan, Ronald L Dalman

  • 1Division of Vascular Surgery, Stanford University Medical Center, CA 94305, USA.

Journal of Endovascular Therapy : an Official Journal of the International Society of Endovascular Specialists
|August 19, 2007
PubMed
Summary
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Carotid angioplasty and stenting (CAS) carries a higher risk of microemboli than carotid endarterectomy (CEA). Coronary artery disease (CAD) is the only identified risk factor for microemboli after carotid intervention.

Area of Science:

  • Neurology
  • Cardiovascular Medicine
  • Radiology

Background:

  • Cerebral microemboli can occur after carotid interventions.
  • Diffusion-weighted magnetic resonance imaging (DW-MRI) detects these microemboli.
  • Identifying risk factors is crucial for patient management.

Purpose of the Study:

  • To identify predictors of microemboli after carotid angioplasty and stenting (CAS) with distal protection.
  • To compare microemboli risk between CAS and carotid endarterectomy (CEA).

Main Methods:

  • Retrospective review of 64 carotid interventions (34 CAS, 30 CEA) with available DW-MRI scans.
  • Analysis of patient, anatomical, and procedural characteristics.
  • Bivariate analysis to identify associations with postprocedural microemboli.

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Main Results:

  • 71% of CAS patients and 3% of CEA patients had new microemboli.
  • History of coronary artery disease (CAD) was the sole independent risk factor for microemboli (p=0.007).
  • Other analyzed factors did not predict microemboli development.

Conclusions:

  • CAS with distal protection has a higher risk of microemboli than CEA.
  • Coronary artery disease (CAD) is a significant predictor of microemboli post-carotid intervention.
  • CAD history may influence the choice between CAS and CEA.