guide catheter
Large-bore catheter providing stable platform for coronary interventions, shaped specifically to engage coronary artery ostia during procedures.
Full Definition
A guide catheter serves as the foundational platform for percutaneous coronary interventions, providing stable access to the coronary circulation and supporting the delivery of interventional equipment. These large-bore catheters (typically 6-8 French) feature specific curve shapes designed to engage the left or right coronary ostia, with common configurations including Judkins Left, Judkins Right, Amplatz Left, and specialized shapes for complex anatomy. Guide catheters must provide adequate backup support for device delivery while maintaining coronary perfusion and avoiding vessel trauma. The selection depends on coronary anatomy, vessel tortuosity, anticipated equipment needs, and operator preference. Modern guide catheters incorporate hydrophilic coatings and radiopaque markers to enhance performance and visibility during procedures.
Usage
Usage note: Hyphenate when used as compound modifier; distinguish from diagnostic catheters which are smaller bore.
In Context
- "A 7 French EBU guide catheter provided excellent support for the complex lesion intervention." — Equipment selection note
- "Guide catheter engagement was challenging due to the patient's anomalous coronary anatomy." — Procedural difficulty description