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[Contribution of intracoronary imaging in CTO PCI]

Jérome Brunet1, Benjamin Duband2, Pascal Motreff2

  • 1Clinique Rhône Durance, 84000 Avignon, France.

Annales De Cardiologie Et D'Angeiologie
|November 1, 2022
PubMed

Insights

Intravascular ultrasound (IVUS) aids chronic total occlusion (CTO) recanalization by guiding guidewire crossing and optimizing stent placement. While optical coherence tomography (OCT) is not primary for CTO procedures, IVUS enhances complex lesion interventions and clinical outcomes.

Area of Science:

  • Interventional Cardiology
  • Medical Imaging Technologies

Context:

  • Chronic total occlusions (CTO) represent a significant challenge in percutaneous coronary interventions (PCI).
  • Despite advancements, CTO-PCI success rates remain lower than non-CTO procedures, often due to guidewire failure.
  • CTO recanalization requires specialized expertise, equipment, and patient management pathways, establishing it as a distinct subspecialty.

Purpose:

  • To explore the role and utility of intravascular ultrasound (IVUS) in facilitating guidewire crossing during CTO recanalization.
  • To evaluate IVUS's contribution to optimizing stent sizing and expansion in complex, long, and calcified CTO lesions.
  • To assess the potential of endocoronary imaging, specifically IVUS, in improving procedural success and clinical outcomes for CTO interventions.

Summary:

  • Intravascular ultrasound (IVUS) provides real-time cross-sectional imaging of the coronary lumen and vessel wall, crucial for guiding guidewire navigation in CTO procedures.
  • IVUS assists in overcoming guidewire crossing challenges, a primary limitation in CTO percutaneous coronary interventions.
  • Beyond guidewire assistance, IVUS is valuable for optimal stent selection and ensuring proper stent expansion in complex CTO lesions.
  • Optical coherence tomography (OCT) is deemed unsuitable for primary CTO procedural management but may serve a role in remote assessment and validation of techniques.

Impact:

  • Endocoronary imaging, particularly IVUS, has the potential to significantly optimize procedural results in CTO interventions.
  • IVUS can help validate strategic decisions made during complex PCI procedures.
  • The ultimate goal of employing IVUS in CTO recanalization is to improve overall clinical outcomes for patients with complex coronary artery disease.

Keywords:
Chronic total occlusionComplex lesionIVUSIntracoronary imagingOCTOcclusion chronique coronairePercutaneous coronary interventionimagerie endocoronaireintervention coronaire percutanéelésion coronaire complexe

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