The risk of acute or subacute closure after angioplasty has been minimized by using stent deployment. However, restenosis rating 20% ∼30% after stenting is still most important limiting factor for stenting.
We investigated a long-term effect of implantation of a heparin-coated JO stent compared with the use of un-coated JO steno. Thirty eight patients were assigned heparin-coated JO stent{21 patients, JO(H)} or uncoated JO stent(17 patients, JO). All clinical and angiographic parameters were retrogradely reviewed. They were followed up monthly and performed follow-up coronary angiography 7 months later. The clinical and angiographic parameters were statistically not different between two groups, except hypertension {JO:18%, JO(H):52%, p＜0.05}. The reference diameter was 3.12±0.53mm in 10 and 2.85 ±0.43mm in JO(H) (p=0.071). The minimum luminal diameter after stenting was not significantly different{2.91±0.52mm in JO, 2.78±0.42mm in JO(H), p=0.381}. The restenosis rate of JO was 32% and JO(H), 35%(p=0.545). Over seven months follow up, it seems that a strategy of elective stenting with heparin-coated JO stent was not more effective than uncoated JO stent.
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