Follow-up angiographic study was performed in patients who underwent successful coronary artery stenting(Palmaz-Schatz) to native coronary arteries, to evaluate the restenosis rate and angiographic features.

Follow-up angiography was done in 6 months after coronary arteries stenting in 16 of 22 patients(follow-up rate : 73%) regardless of symptom recurrence or the result of exercise treadmill test.

1) Total 26 Palmaz-Schatz stents were implanted in 26 patients with coronary stenosis : primary, elective stenting in 19, bail-out procedure in 4 and restenosis after prior coronary angioplasty(PTCA) in 4 patients. The morphological characteristic of the leisons were type A in 1, type B in 20 and type C in 5.

2) Coronary stenting was successful in all patients and no significant procedure-related cardiac event occurred. Subacute closure in the stent and bleeding complication developed in minority of patients.

3) The overall restenosis rate in six months was 31%.

4) The diameter stenosis of the lesion in the patients without restenosis was 94% before stenting, 6% immediately after stenting and 26% in 6 months.

Coronary artery stenting is a safe and useful interventional procedure which can be done with low risk even in the complicated leison. The restenosis rate is comparable to conventional PTCA. The long-term outcome of coronary stenting might be more favorable and promising with more selective and strict application of this procedure.