complex lesion morphology
Coronary stenosis characteristics that increase procedural difficulty and complication risk.
Full Definition
Complex lesion morphology describes coronary stenoses with anatomical features that make percutaneous intervention technically challenging and associated with higher complication rates. These characteristics may include severe calcification, chronic total occlusions, bifurcation involvement, extreme tortuosity, thrombus burden, ostial location, or long lesion length. The ACC/AHA lesion classification system categorizes lesions as Type A (simple), Type B1 (moderate complexity), Type B2 (moderate-high complexity), or Type C (high complexity) based on these morphological features. Recognition of complex morphology is crucial for procedure planning, device selection, and risk stratification.
Usage
Usage note: Specify particular complex features when possible; avoid as catch-all term.
In Context
- "The complex lesion morphology required advanced intervention techniques." — Procedural planning note
- "Complex lesion morphology was identified on pre-procedural imaging." — Case presentation