geographic miss
Incomplete lesion coverage during intervention, leaving diseased segments untreated outside the stent boundaries.
Full Definition
Geographic miss refers to the incomplete coverage of a diseased arterial segment during percutaneous coronary intervention, where portions of the target lesion remain outside the boundaries of the deployed stent or treatment device. This phenomenon typically occurs when the operator underestimates lesion length or fails to adequately cover the entire disease burden, particularly the lesion edges. Geographic miss is associated with increased risk of restenosis, target lesion revascularization, and adverse cardiac events. Modern intravascular imaging techniques like IVUS and OCT help minimize geographic miss by providing accurate lesion assessment and optimal stent sizing and positioning.
Usage
Usage note: Use as two words; avoid hyphenation except when used as compound modifier (geographic-miss phenomenon).
In Context
- "IVUS revealed geographic miss at the proximal edge requiring additional stent placement." — Procedural report
- "Geographic miss was identified as a potential cause of early restenosis in this case." — Follow-up assessment