Related Experiment Video
Updated: Apr 5, 2026

Upper-extremity Approach for Secondary Access in Transfemoral Transcatheter Aortic Valve Implantation
Published on: August 8, 2025
"Combo" technique for the use of 7F guide catheter system during transradial approach
Tejas Patel1,2, Sanjay Shah1,2, Samir Pancholy3
1Apex Heart Institute, Ahmedabad, India.
Insights
Navigating large guide catheters via the transradial approach can be challenging. A novel "Combo" technique facilitates atraumatic 7F guide catheter tracking, improving procedural success and patient comfort.
Area of Science:
- Interventional Cardiology
- Vascular Access Techniques
Background:
- Transradial approach (TRA) is common for percutaneous coronary intervention.
- Larger guide catheters (7F) can be difficult to advance through the radial artery and arm vasculature.
- Challenges in guide catheter manipulation can lead to complications and procedural delays.
Purpose of the Study:
- To introduce and evaluate a simple, innovative "Combo" technique.
- To facilitate atraumatic advancement of 7F guide catheters during transradial interventions.
- To improve procedural success rates and reduce patient discomfort.
Main Methods:
- Description of the "Combo" technique for guide catheter manipulation.
- Application of the technique in five successive patient cases undergoing transradial intervention.
- Assessment of ease of catheter tracking, procedural completion, and patient-reported pain.
Main Results:
- The "Combo" technique enabled smooth and atraumatic tracking of 7F guide catheters.
- Successful completion of interventional procedures in all five cases.
- No significant vascular damage or excessive local pain reported by patients.
Conclusions:
- The "Combo" technique is a simple and effective method for advancing large guide catheters via the transradial approach.
- This technique enhances procedural efficiency and patient safety in transradial interventions.
- It offers a valuable solution for overcoming challenges associated with 7F guide catheter use in TRA.
Abstract:
Even a regular lumen of radial artery may create difficulty in smooth negotiation and propagation of a 7F guide catheter while performing intervention through transradial approach. We describe successive five cases of a simple and innovative "Combo" technique, which helps relatively atraumatic tracking of a 7F guide catheter through the course of arm and chest vasculature for successful completion of procedure without significant damage and local pain.
Related Concept Videos
Cardiac Catheterization I: Pre-Procedure Overview
Cardiac Catheterization IV: Nursing Management
Cardiac Catheterization III: Left Heart Catheterization
Cardiac Catheterization II: Right Heart Catheterization
Assessment of radial pulse
The radial pulse, located at the wrist, is often the preferred site for assessing peripheral pulse because of its accessibility and dependability. The process of determining the radial pulse involves several steps:

