wire bias
The tendency of a guidewire to preferentially track toward one branch over another at vessel bifurcations.
Full Definition
Wire bias refers to the inherent tendency of guidewires to favor one branch over another when navigating through vessel bifurcations during interventional procedures. This phenomenon occurs due to the physical properties of the guidewire, including its tip shape, stiffness, and coating, combined with the anatomical characteristics of the bifurcation such as branch angle and diameter ratio. Wire bias can be advantageous when the operator wants to access a specific branch but problematic when trying to maintain access to both branches during complex bifurcation interventions. Understanding and manipulating wire bias is crucial for successful bifurcation stenting techniques.
Usage
Usage note: Relevant primarily in bifurcation intervention contexts.
In Context
- "The hydrophilic guidewire demonstrated strong bias toward the larger diagonal branch." — Interventional technique description
- "To overcome wire bias, a stiffer guidewire was selected to access the smaller side branch." — Procedural troubleshooting note