restenosis
Pronunciation: ree-steh-NOH-sis
The re-narrowing of a blood vessel after it has been widened by intervention such as angioplasty or stenting.
Full Definition
Restenosis refers to the pathological process of vessel re-narrowing following successful revascularization procedures such as balloon angioplasty, stenting, or surgical bypass. This complication results from intimal hyperplasia, elastic recoil, or stent thrombosis, typically occurring within the first six months to two years after intervention. Restenosis rates vary by vessel location, patient factors, and intervention type. The term appears in follow-up imaging reports, clinical assessments, and long-term outcome studies.
Usage
Usage note: Distinguish from primary stenosis by emphasizing the 're-' prefix indicating recurrence after treatment.
In Context
- "Follow-up angiography revealed 70% restenosis within the previously stented segment." — Surveillance imaging
- "Drug-eluting stents significantly reduce restenosis rates compared to bare metal stents." — Clinical research