Stenosis is narrowing, restenosis is narrowing after the lumen was widened or cleared, and you're familiar, no doubt, with the word instant. So instant restenosis means the lumen quickly narrowed again after clearing.

intracoronary bracytherapy

By forming a rigid support, the stent can prevent restenosis and reduce the need for coronary bypass surgery.

regularly see the physician to monitor his or her recovery and control risk factors. Routine stress testing is a part of the follow-up treatment to detect restenosis that may occur without symptoms.

These coated stents have significantly reduced restenosis rates--down to 3%--in some clinical studies. One coated stent brand, the Cordis CYPHER, became the first coated stent approved by the FDA in April 2003.