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Optical Coherence Tomography Based Biomechanical Fluid-Structure Interaction Analysis of Coronary Atherosclerosis Progression
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Optical Coherence Tomography Based Biomechanical Fluid-Structure Interaction Analysis of Coronary Atherosclerosis Progression

Published on: January 15, 2022

Iatrogenic coronary ostial stenosis of left main stem following aortic valve replacement: visualization with optical

Muhammad A Khan1, Francesco Prati, Magdi El-Omar

  • 1Department of Cardiology, Manchester Heart Centre, Manchester Royal Infirmary, M13 9WL Manchester, United Kingdom.

Cardiovascular Revascularization Medicine : Including Molecular Interventions
|March 27, 2013
PubMed

Insights

Iatrogenic coronary ostial stenosis, a rare complication after aortic valve replacement (AVR), can occur due to cannula trauma during cardioplegia delivery. This case highlights the importance of surgical awareness for preventing this serious post-operative issue.

Area of Science:

  • Cardiovascular Surgery
  • Interventional Cardiology
  • Cardiac Imaging

Background:

  • Iatrogenic coronary ostial stenosis is a recognized complication following aortic valve replacement (AVR).
  • It typically manifests within six months of the surgical procedure.
  • The incidence rate can be as high as 3.4% in affected patients.

Observation:

  • An 85-year-old male presented with acute coronary syndrome two months post-AVR.
  • Coronary angiography identified a severe de novo lesion in the left main coronary artery.
  • Optical coherence tomography (OCT) revealed severe intimal hyperplasia as the cause of the stenosis.

Findings:

  • The observed intimal hyperplasia suggests a mechanism of vessel wall trauma.
  • The trauma is likely attributed to the rigid tip of the cannula used for antegrade cardioplegia administration.
  • This represents a specific iatrogenic cause of coronary ostial stenosis post-AVR.

Implications:

  • Surgeons must exercise caution when administering cardioplegia solution via the antegrade approach.
  • Awareness of this potential complication can guide surgical technique to minimize risk.
  • Early recognition and understanding of this mechanism are crucial for patient outcomes after AVR.

Keywords:
Iatrogenic coronary ostial stenosisOptical Coherence Tomography

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