Comparison between tip-detection method and retrograde approach for chronic total occlusion percutaneous coronary...

Area of Science:

• Cardiology
• Interventional Cardiology
• Vascular Medicine

Background:

• The tip-detection method and retrograde approach are established second-line strategies for chronic total occlusion (CTO) percutaneous coronary intervention (PCI).
• These techniques are employed when conventional antegrade wiring strategies prove ineffective in complex CTO cases.

Purpose of the Study:

• To compare the efficacy of the tip-detection method versus the retrograde approach for complex CTO PCI.
• To evaluate success rates and procedural times associated with each strategy.

Main Methods:

• A retrospective analysis of 170 CTO PCI cases involving 295 strategies.
• Comparison of successful lesion crossing rates and wire-manipulation times between tip-detection and retrograde approaches.

Main Results:

• The tip-detection method achieved a higher success rate (82.1%) compared to the retrograde approach (47.5%).
• Successful tip-detection procedures had significantly shorter wire-manipulation times (20.0 min) than retrograde approaches (35.0 min).
• Severe lesion tortuosity was associated with a lower success rate for the tip-detection method (OR 0.26, p=0.037).

Conclusions:

• The tip-detection method is more time-efficient for successful CTO PCI than the retrograde approach.
• Severe lesion tortuosity presents a challenge, potentially reducing the success rate of the tip-detection method.