Rational guidewire use in the coronary chronic total occlusion interventions

Area of Science:

• Interventional Cardiology
• Biotechnology in Medical Devices

Background:

• Coronary chronic total occlusion (CTO) procedures remain challenging with historically lower success rates.
• Advances in biotechnology and dedicated guidewires have improved CTO intervention success.
• Predicting guidewire crossability and optimizing usage are crucial for CTO interventions.

Purpose of the Study:

• To identify clinical and angiographic predictors of initial guidewire crossability in CTO interventions.
• To determine factors contributing to rational guidewire usage in CTO procedures.
• To evaluate the impact of guidewire characteristics on procedural success.

Main Methods:

• Analysis of 177 patients undergoing coronary CTO procedures.
• Classification of CTO lesions using Japanese chronic total occlusion (J-CTO) and EuroCTO scores.
• Statistical analysis including logistic regression to identify predictors of guidewire crossability and rational usage.

Main Results:

• The overall procedure success rate was 90.4%.
• Initial guidewire crossability was achieved in 44.1% of cases, with 1-3 guidewires used in 82.1%.
• Polymeric (82.1%) and moderate stiff tip (64.1%) guidewires showed higher crossability; the Pilot brand was most successful (36.2%).
• J-CTO score, procedural technique, guidewire type, and tip stiffness predicted rational guidewire usage.

Conclusions:

• Polymeric and moderate stiff tip guidewires, particularly the Pilot brand, are associated with rational guidewire usage.
• These guidewire characteristics are beneficial in managing easy and intermediate difficulty CTO cases.
• Optimizing guidewire selection based on lesion complexity can enhance CTO intervention outcomes.