Calcified Coronary Artery Disease: Pathology, Prevalence, Predictors and Impact on Outcomes

Angela McInerney1, Seán O Hynes2,3, Nieves Gonzalo4

  • 1Department of Interventional Cardiology, Galway University Hospital Galway, Ireland.

Insights

Coronary artery calcium, even without blockage, indicates poor prognosis and increases cardiovascular event risk. Modifying calcium before stenting improves outcomes and is aided by intracoronary imaging.

Area of Science:

  • Cardiovascular Medicine
  • Interventional Cardiology
  • Pathophysiology

Background:

  • Calcified coronary artery disease is common, affecting 25-30% of patients undergoing percutaneous coronary intervention.
  • Coronary calcium presence, even without obstruction, is linked to adverse clinical outcomes.
  • Coronary calcium scoring via CT predicts cardiovascular events beyond traditional risk factors.

Purpose of the Study:

  • To review the pathophysiology, prevalence, predictors, and clinical impact of coronary calcium.
  • To highlight the challenges and strategies for managing calcified coronary lesions during percutaneous coronary intervention.
  • To emphasize the role of intracoronary imaging in optimizing stent placement in calcified arteries.

Main Methods:

  • Review of existing literature on coronary calcium pathophysiology and clinical significance.
  • Analysis of data regarding the impact of calcified versus non-calcified lesions on percutaneous coronary intervention outcomes.
  • Discussion of techniques for calcium modification and the role of intracoronary imaging.

Main Results:

  • Calcified coronary stenoses lead to higher rates of target lesion failure and major adverse cardiovascular events post-revascularization compared to non-calcified lesions.
  • Calcium modification before stenting is crucial for optimal stent expansion and improved procedural success.
  • Intracoronary imaging aids in detecting coronary calcium and confirming adequate stent optimization.

Conclusions:

  • Coronary calcium is a significant marker of cardiovascular risk and impacts percutaneous coronary intervention outcomes.
  • Effective management of coronary calcium, including pre-stenting modification and imaging guidance, is essential for improving patient prognosis.
  • Further research into the pathophysiology and treatment of calcified coronary artery disease is warranted.

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