scaffold recoil
The acute reduction in vessel lumen diameter immediately following balloon deflation during angioplasty, before permanent scaffold placement.
Full Definition
Scaffold recoil, also known as elastic recoil, refers to the immediate decrease in arterial lumen diameter that occurs when balloon pressure is released during coronary angioplasty, caused by the elastic properties of the vessel wall and atherosclerotic plaque. This phenomenon represents a significant limitation of balloon angioplasty alone and was a primary driver for the development of coronary stents. The degree of recoil varies depending on plaque composition, vessel characteristics, and lesion morphology. Modern interventional practice uses permanent metallic stents or bioresorbable scaffolds to counteract this recoil and maintain vessel patency. Understanding recoil mechanisms is essential for editors reviewing historical procedural literature and contemporary scaffold research.
Usage
Usage note: Distinguish from late scaffold thrombosis or chronic restenosis when editing historical or research documents.
In Context
- "Significant scaffold recoil was observed after balloon deflation, necessitating stent implantation." — Legacy procedure report
- "The bioresorbable scaffold was designed to minimize acute recoil while allowing vessel restoration." — Device evaluation study