overlapping stents
Placement of multiple stents with intentional overlap to treat long lesions or vessel segments requiring complete scaffolding.
Full Definition
Overlapping stents involves the deliberate placement of two or more stents with overlapping segments to treat lesions longer than a single stent or to ensure complete lesion coverage with adequate landing zones. While effective for treating long lesions, overlapping stents creates areas of double drug elution and metal density that may increase the risk of restenosis and late stent thrombosis. The overlap zone typically requires high-pressure post-dilatation to ensure proper apposition and minimize flow disturbances. Current guidelines recommend minimizing overlap length (typically 2-4mm) and using intravascular imaging to optimize deployment. Single long stents are preferred when technically feasible to avoid overlap-related complications.
Usage
Usage note: Document overlap length and post-dilatation strategy in procedural notes.
In Context
- "Overlapping stents were required to treat the 45mm lesion with 3mm overlap zones optimized by IVUS." — Long lesion intervention report
- "The patient developed in-stent restenosis specifically at the overlapping stents junction." — Follow-up angiography report