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Updated: Jul 5, 2026

Novel and Innovative Hybrid Technique for Type A Aortic Dissection
Published on: March 28, 2025
A novel use of a split sheath to maintain vessel access when guidewire exchange is not possible
Steven Appleby1, Kent McAllister, Morton J Kern
1University of California, Irvine, Division of Cardiology, Orange, California, USA.
Insights
A novel technique allows catheter removal while maintaining vascular access, even if the catheter lumen becomes blocked. This method prevents loss of access, avoiding the need for alternative vascular approaches.
Area of Science:
- Vascular surgery
- Interventional radiology
- Medical device technology
Background:
- Maintaining vascular access is crucial during catheter procedures.
- The standard guidewire exchange technique is essential for preserving access.
- Catheter lumen blockage necessitates removal, leading to loss of vascular access.
Observation:
- Guidewire exchange is not possible when a catheter lumen is blocked.
- Catheter removal due to blockage results in loss of vascular access.
- A new technique has been developed to address this challenge.
Findings:
- A technique to remove a blocked catheter without losing vascular access is described.
- This method provides a solution for maintaining vessel access during difficult catheter procedures.
Implications:
- This technique can improve patient outcomes by ensuring continuous vascular access.
- It offers a valuable alternative in situations where standard methods fail.
- Potential to reduce complications and the need for repeat procedures.
Abstract:
After inserting a catheter into a vessel, guidewire exchange technique must be used to maintain vascular access. If the lumen of the catheter is blocked and the guidewire exchange cannot be used, the catheter can only be removed, vascular access is lost, and an alternate vascular approach attempted. We describe a technique to remove the blocked catheter and still maintain vascular access.

