Intermediate
Technical
IVT
postdilatation
High-pressure balloon inflation performed after stent deployment to optimize stent expansion and apposition.
Full Definition
Postdilatation involves high-pressure balloon inflation within a deployed stent to optimize stent expansion, improve vessel wall apposition, and correct stent underexpansion. This technique typically employs a non-compliant balloon at higher pressures than the initial stent deployment pressure. Postdilatation is particularly important in calcified lesions, bifurcation interventions, and when intravascular imaging reveals suboptimal stent expansion or malapposition.
Usage
Usage note: Can be hyphenated (post-dilatation) but single word form is increasingly preferred.
In Context
- "Postdilatation with a non-compliant balloon at 18 atmospheres optimized stent expansion." — Interventional procedure report
- "OCT imaging prompted postdilatation to address stent underexpansion in the proximal segment." — Complex intervention with imaging guidance
Also known as
post-dilatation
stent optimization
Contrasted with
predilatation
Don't confuse with
predilatation
balloon angioplasty