RailTracking: A Novel Technique to Overcome Difficult Anatomy During Transradial Approach

Area of Science:

• Cardiology
• Interventional Cardiology
• Medical Devices

Background:

• Transradial access (TRA) is preferred for percutaneous coronary interventions (PCI) but can be complicated by challenging vascular anatomy.
• Existing assisted-tracking techniques aim to improve catheter trackability using a "guiding tapered tip" concept.
• The RailTracking technique innovates by creating a tapered catheter tip with a dedicated device.

Purpose of the Study:

• To evaluate the safety and efficacy of the novel RailTracking technique.
• To assess its performance in managing difficult transradial routes during PCI.
• To determine its utility as a bail-out solution in complex cases.

Main Methods:

• A prospective analysis of 77 patients undergoing PCI with challenging transradial anatomy was conducted.
• The RailTracking technique was employed as a bail-out strategy in two high-volume centers from January 2021 to January 2022.
• Data collected included anatomical characteristics and procedural outcomes.

Main Results:

• The RailTracking technique achieved a high procedural success rate of 98.7% (76/77 patients).
• Common challenges included small radial arteries (35.1%), radial tortuosity (19.5%), and severe radial spasm (38.9%).
• No periprocedural vascular complications were observed, with a 1-month radial artery occlusion rate of 3.89%.

Conclusions:

• The RailTracking technique effectively improves catheter advancement in complex transradial anatomies.
• It presents a safe and effective option, particularly in cases where standard approaches fail.
• This novel technique enhances the feasibility of TRA in challenging PCI procedures.