Reverse controlled antegrade and retrograde subintimal tracking in chronic total occlusion of right coronary artery

Area of Science:

• Cardiovascular Interventions
• Interventional Cardiology
• Medical Imaging

Background:

• Percutaneous coronary intervention (PCI) for chronic total occlusion (CTO) frequently fails due to guidewire passage difficulties.
• Accurate pre-procedural assessment is crucial for successful CTO intervention.
• Intravascular ultrasound (IVUS) and cardiac CT angiography offer valuable insights into CTO morphology.

Purpose of the Study:

• To evaluate the efficacy of a novel reverse controlled antegrade and retrograde subintimal tracking technique.
• To assess the utility of IVUS and cardiac CT angiography in guiding PCI for ambiguous CTOs.
• To report procedural success and challenges in complex proximal right coronary artery CTOs.

Main Methods:

• Utilized a reverse controlled antegrade and retrograde subintimal tracking approach.
• Employed intravascular ultrasound (IVUS) and cardiac CT angiography for lesion assessment and guidance.
• Applied the technique to a case of ambiguous chronic total occlusion in the proximal right coronary artery.

Main Results:

• The described technique, supported by IVUS and cardiac CT angiography, facilitated guidewire passage in a challenging CTO.
• Successful revascularization was achieved by overcoming the ambiguous nature of the proximal right coronary artery occlusion.
• The integrated imaging approach aided in navigating complex anatomical features.

Conclusions:

• The reverse controlled antegrade and retrograde subintimal tracking technique is a viable strategy for complex CTO PCI.
• IVUS and cardiac CT angiography are essential tools for optimizing success rates in challenging CTO interventions.
• This approach offers a potential solution for guidewire passage failure in CTO.