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Antegrade versus retrograde techniques for Chronic Total Occlusions (CTO): a review and comparison of techniques and
Katherine J Kunkel1, Saroj Neupane2, Ankur Gupta3
1Division of Cardiology, Henry Ford Hospital, Detroit, Michigan, US.
Insights
Retrograde techniques enhance chronic total occlusion percutaneous coronary intervention (CTO PCI) success, especially for complex cases. While short-term complications may increase, long-term outcomes remain comparable to antegrade approaches.
Area of Science:
- Cardiology
- Interventional Cardiology
- Vascular Medicine
Background:
- Chronic Total Occlusion (CTO) percutaneous coronary intervention (PCI) techniques have advanced significantly.
- Understanding various approaches is crucial for successful treatment.
Purpose of the Study:
- To review major techniques in modern CTO PCI.
- To compare antegrade and retrograde approaches for CTO PCI.
Main Methods:
- Review of major techniques: antegrade wiring, antegrade dissection reentry, retrograde wiring, and retrograde dissection reentry.
- Comparison of retrograde versus antegrade techniques in CTO PCI.
Main Results:
- Retrograde techniques improve CTO PCI success rates, particularly for complex lesions.
- Retrograde techniques may be associated with increased short-term complications.
- Long-term CTO PCI durability and patient outcomes are similar between antegrade-only and retrograde techniques.
Conclusions:
- Retrograde techniques are vital for CTO PCI success, especially in complex lesions and patients with comorbidities.
- Advancements in equipment and imaging will improve procedural safety and guide technique selection for CTO PCI.
Abstract:
Introduction: As the field of chronic total occlusion percutaneous coronary intervention has evolved, technical approaches have evolved and been refined.Areas covered: In this review, we discuss the major techniques utilized in modern CTO PCI including antegrade wiring, antegrade dissection reentry, retrograde wiring, and retrograde dissection reentry. Retrograde techniques have been extensively studied in comparison to antegrade techniques. Retrograde techniques have contributed to increases in CTO PCI success rates and are generally used in higher complexity lesions. Observational data ssuggestincreased sshort-termcomplications in procedures requiring the use of retrograde techniques; however, llong-termCTO PCI durability and patient outcomes have been shown to be similar among procedures using antegrade only versus retrograde techniques.Expert opinion: Retrograde techniques play a vital role in the technical success of CTO PCI, particularly among more complex lesions and in patients with high burdens of comorbidities. Increases in procedural safety with equipment iteration and in the use of adjunctive imaging will play an important role in the selection of appropriate retrograde conduits and the overall success rates of CTO PCI.
