geographic miss
Incomplete lesion coverage by stent deployment, leaving diseased segments untreated at the proximal or distal edges.
Full Definition
A technical error in stent positioning that results in incomplete coverage of the atherosclerotic lesion, with diseased vessel segments remaining outside the stented area. Geographic miss typically occurs at lesion edges due to inadequate stent length selection, poor positioning, or failure to recognize the full extent of disease. This condition predisposes to edge restenosis, as untreated atherosclerotic tissue at stent borders creates flow disturbances and ongoing disease progression. Prevention requires careful lesion assessment, appropriate stent sizing, and precise deployment techniques guided by angiographic or intravascular imaging.
Usage
Usage note: Two words without hyphenation; distinguish from intentional stent gaps in long lesions.
In Context
- "Geographic miss at the distal edge contributed to recurrent symptoms at six-month follow-up." — Follow-up assessment
- "Intravascular ultrasound was used to ensure complete lesion coverage and avoid geographic miss." — Procedural planning document