vessel sizing
Accurate measurement of coronary artery dimensions to guide appropriate stent selection and optimize deployment parameters.
Full Definition
Vessel sizing is a critical component of successful percutaneous coronary intervention that involves precise measurement of reference vessel diameter, lesion length, and assessment of vessel tapering. Accurate sizing is essential for selecting appropriate stent dimensions to achieve optimal apposition while avoiding oversizing that may cause vessel injury or undersizing that results in malapposition. Methods include visual estimation from angiography, quantitative coronary angiography (QCA), and intravascular imaging with IVUS or OCT. Intravascular imaging provides the most accurate measurements, particularly for eccentric or calcified lesions where angiography may be misleading. Proper vessel sizing reduces the risk of stent thrombosis, restenosis, and procedural complications.
Usage
Usage note: Document the sizing method used and any discrepancies between modalities.
In Context
- "IVUS-guided vessel sizing revealed a reference diameter of 3.2mm, leading to selection of a 3.0mm stent." — Intravascular imaging report
- "Visual vessel sizing from angiography underestimated the true vessel diameter by 0.4mm compared to OCT measurements." — Quality assurance review